Final California 2012 Integrated Report( 303(d) List/305(b) Report)

Supporting Information

Regional Board 1 - North Coast Region

Water Body Name:	Russian River HU, Middle Russian River HA, Geyserville HSA
Water Body ID:	CAR1142503219990615082353
Water Body Type:	River & Stream

DECISION ID	29135	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Sources:	Source Unknown
Expected TMDL Completion Date:	2016
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Fecal indicator bacteria (which includes Escherichia coli (E. Coli) and fecal coliform) are being considered for removal from and placement on from the Section 303(d) List in 3 parts: (A) CONSIDERING DELISTING - unnamed Stream 1 on Fitch Mountain, (B) CONSIDERING LISTING - Foss Creek, and (C) CONSIDERING LISTING - the remainder of the Geyserville HSA. It should be noted that data from the mainstem Russian River from the railroad bridge to the Highway 101 bridge (Healdsburg Memorial Beach) were incorrectly evaluated in this water body during the 2010 Integrated Report cycle. Therefore, the information in LOEs 7110, 6119, 5941, 5936, 6118, 5935, 6117, 7111, 6120, and 5943 have been copied into new LOEs under the Russian River HU, Middle Russian River HA, Guerneville HSA water body and the data are now assessed under that water body in this current Integrated Report cycle. Additionally, it should be noted that enterococcus and total coliform data were not utilized in this decision for the following reasons: (1) enterococcus is not an appropriate indicator of sewage and pathogens in freshwater as it can come from non-fecal sources, can regrow in the stream environment, and because there is a likelihood of false positive results in freshwater using current analytical methods, and (2) total coliform are widespread in nature and occur in non-fecal sources such as soil and submerged wood. CONSIDERING DELISTING: (A) For Stream 1 on Fitch Mountain, this pollutant is being considered for removal from the Section 303(d) List under Section 4.3 of the Listing Policy using a 10% exceedance rate. Under this section a single line of evidence (LOE) is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant: one for E. Coli (LOE 6106) and one for fecal coliform (LOE 6105). In accordance with Section 4.3 of the Listing Policy, because a 10% exceedance rate was utilized to add Stream 1 to the Section 303(d) List, a 10% exceedance rate shall be used to consider if Stream 1 should be removed from the Section 303(d) List. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing Stream 1 on Fitch Mountain from the Section 303(d) List in the Water Quality Limited Segments category for fecal Indicator Bacteria (i.e., sufficient justification to not delist). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4. (2) The data used satisfies the data quantity requirements of Section 6.1.5. (3) 7 of 7 fecal coliform samples exceed the evaluation guideline used to interpret the water quality objective, and this exceeds the allowable frequency from Table 4.2 of the Listing Policy. (4) Pursuant to Section 4.11, no additional data and information are available indicating that standards are not met. CONSIDERING LISTING: (B) For Foss Creek, this pollutant is being considered for placement on the Section 303(d) List under Section 3.2. Under this section a single line of evidence (LOE) is necessary to assess listing status. One line of evidence for E. Coli is available in the administrative record to assess this pollutant. In accordance with Section 3.3 of the Listing Policy a 4% exceedance rate shall be used to add waters from the List "if water quality monitoring was conducted April 1 through October 31 only." If the data collected include months outside the April 1 through October 31 date range, then the data shall be assessed according to Section 3.2 of the Listing Policy, at a 10% exceedance rate. Therefore, Foss Creek is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy, using a 10% exceedance rate. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) 2 of 2 E. Coli samples from Foss Creek exceed the single sample maximum evaluation guideline, however this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (1) 26 samples, or (2) greater than or equal to 5 exceedances of the objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to Section 3.11, no additional data and information are available indicating that standards are not met. CONSIDERING LISTING: (C) For the remainder of the Geyserville HSA, this pollutant is being considered for placement on the Section 303(d) List under Section 3.3. Under this section a single line of evidence (LOE) is necessary to assess listing status. Seventeen lines of evidence are available in the administrative record to assess this pollutant: twelve for E. Coli and five for fecal coliform. In accordance with Section 3.3 of the Listing Policy, a 4% exceedance rate shall be used to add waters to the List "if water quality monitoring was conducted April 1 through October 31 only." Data from each freshwater beach along the mainstem Russian River were evaluated independently, as were data from an unnamed tributary (Stream 2). None of the E. Coli or fecal coliform samples at any of the freshwater beaches on the mainstem Russian River (both single samples and geomean values) exceed the allowable 4% exceedance rate. There was an insufficient sample size to determine with the power and confidence of the listing policy if Stream 2 should be listed. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4. (2) The data used satisfies the data quantity requirements of Section 6.1.5. (3) E. Coli and fecal coliform samples do not exceed the objectives more than the allowable frequency identified in Section 3.3 of the Listing Policy. (4) Pursuant to Section 3.11, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, North Coast Regional Water Board staff concludes that: (A) For Stream 1 on Fitch Mountain, the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. (B) For Foss Creek, the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. (C) For the remainder of the Geyserville HSA, the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:	Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) 2 of 2 E. Coli samples from Foss Creek exceed the single sample maximum evaluation guideline, however this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (1) 26 samples, or (2) greater than or equal to 5 exceedances of the objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to Section 3.11, no additional data and information are available indicating that standards are not met. CONSIDERING LISTING: (C) For the remainder of the Geyserville HSA, this pollutant is being considered for placement on the Section 303(d) List under Section 3.3. Under this section a single line of evidence (LOE) is necessary to assess listing status. Seventeen lines of evidence are available in the administrative record to assess this pollutant: twelve for E. Coli and five for fecal coliform. In accordance with Section 3.3 of the Listing Policy, a 4% exceedance rate shall be used to add waters to the List "if water quality monitoring was conducted April 1 through October 31 only." Data from each freshwater beach along the mainstem Russian River were evaluated independently, as were data from an unnamed tributary (Stream 2). None of the E. Coli or fecal coliform samples at any of the freshwater beaches on the mainstem Russian River (both single samples and geomean values) exceed the allowable 4% exceedance rate. There was an insufficient sample size to determine with the power and confidence of the listing policy if Stream 2 should be listed. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4. (2) The data used satisfies the data quantity requirements of Section 6.1.5. (3) E. Coli and fecal coliform samples do not exceed the objectives more than the allowable frequency identified in Section 3.3 of the Listing Policy. (4) Pursuant to Section 3.11, no additional data and information are available indicating that standards are not met.
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32002
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	23
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Two of the twenty-three geometric means calculated exceeded the evaluation guideline for enterococcus. The samples were collected at Russian River at Geyserville Bridge
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for enterococcus exceeds 33 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Geyserville Bridge.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32001
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	18
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the eighteen geometric means calculated exceeded the evaluation guideline for E. coli. The samples were collected at Russian River at Geyserville Bridge
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for E. coli exceeds 126 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Geyserville Bridge.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32000
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	18
Number of Exceedances:	18
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Eighteen of the eighteen geometric means calculated exceeded the evaluation guideline for total coliform. The samples were collected at Russian River at Geyserville Bridge
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for total coliform exceeds 1,000 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Geyserville Bridge.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31965
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	19
Number of Exceedances:	19
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Nineteen of the nineteen geometric means calculated exceeded the evaluation guideline for total coliform. The samples were collected at Russian River at Alexander Valley Campground.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for total coliform exceeds 1,000 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Alexander Valley Campground.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31964
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	19
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the nineteen geometric means calculated exceeded the evaluation guideline for E. coli. The samples were collected at Russian River at Alexander Valley Campground.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for E. coli exceeds 126 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Alexander Valley Campground.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31963
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	24
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Ten of the twenty-four geometric means calculated exceeded the evaluation guideline for enterococcus. The samples were collected at Russian River at Alexander Valley Campground.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for enterococcus exceeds 33 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Alexander Valley Campground.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31873
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	20
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the twenty samples collected at Russian River at Cloverdale River Park exceeded the total coliform evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Cloverdale River Park.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31961
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	18
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the eighteen geometric means calculated exceeded the evaluation guideline for E. coli. The samples were collected at Russian River at Cloverdale River Park.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for E. coli exceeds 126 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Cloverdale River Park.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31960
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	17
Number of Exceedances:	17
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Seventeen of the seventeen geometric means calculated exceeded the evaluation guideline for total coliform. The samples were collected at Russian River at Cloverdale River Park.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for total coliform exceeds 1,000 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Cloverdale River Park.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31877
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the twenty-two samples collected at Russian River at Alexander Valley Campground exceeded the total coliform evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Alexander Valley Campground.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31876
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	27
Number of Exceedances:	8
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Eight of the twenty-seven samples collected at Russian River at Alexander Valley Campground exceeded the enterococcus evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample enterococcus levels exceed 61 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Alexander Valley Campground.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31875
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	24
Number of Exceedances:	4
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Four of the twenty-four samples collected at Russian River at Geyserville Bridge exceeded the enterococcus evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample enterococcus levels exceed 61 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Geyserville Bridge.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31874
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	21
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the twenty-one samples collected at Russian River at Geyserville Bridge exceeded the E. coli evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Geyserville Bridge.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31962
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	23
Number of Exceedances:	7
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Seven of the twenty-three geometric means calculated exceeded the evaluation guideline for enterococcus. The samples were collected at Russian River at Cloverdale River Park.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when the geometric mean for enterococcus exceeds 33 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Cloverdale River Park.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31872
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	20
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the twenty samples collected at Russian River at Cloverdale River Park exceeded the E. coli evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Cloverdale River Park.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31871
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	29
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Ten of the twenty-nine samples collected at Russian River at Cloverdale River Park exceeded the enterococcus evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample enterococcus levels exceed 61 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Cloverdale River Park.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5882
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	153
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 153 total coliform samples from the Russian River at Camp Rose Beach exceed the evaluation guideline. Sample concentrations ranged from 20 to 4,352 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 1997 - 2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. At all areas where shellfish may be harvested for human consumption (SHELL), the fecal coliform concentration throughout the water column shall not exceed 43 MPN / 100 ml for a 5-tube decimal dilution test or 49 MPN / 100 ml when a three-tube decimal dilution is used. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Camp Rose Beach near Healdsburg, upstream of the river bend near the well head. Samples were collected from the center of the main river flow.
Temporal Representation:	The samples were generally collected once a week during the summer months between Memorial Day and Labor Day in 1997-2003, and 2005-2007. Samples for 2008 were collected from May 27, 2008 to July 15, 2008. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31870
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	21
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the twenty-one samples collected at Russian River at Geyserville Bridge exceeded the total coliform evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Geyserville Bridge.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31838
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	22
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the twenty-two samples collected at Russian River at Alexander Valley Campground exceeded the E. coli evaluation guideline.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. Water Quality Control Plan, North Coast Region (NCRWQCB 2011).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. Draft Guidance for Fresh Water Beaches (CDPH 2011).
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from Russian River at Alexander Valley Campground.
Temporal Representation:	The samples were collected once a week from the end of May to October 2009.
Environmental Conditions:
QAPP Information:	The data was collected by the Sonoma County Water Agency (SCWA) and analyzed by the Sonoma County Public Health Laboratory. SCWA follows the same protocol as the North Coast Water Quality Control Board.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	7111
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	18
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 18 total coliform samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Samples concentrations range from 152.3 to 2,419.2 MPN / 100 ml. Samples were collected by the Sonoma County Water Agency. Data are summarized in the "Russian River Pathogen Data Report" of the Russian River Pathogen Project Database (ICE 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Healdsburg Memorial Beach.
Temporal Representation:	Samples were collected once every several days from July 30 to August 9, 2004, and from May 17 to June 28, 2007.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The quality assurance information for these data is unknown.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	7110
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	13
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 13 E. coli samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Samples concentrations range from 8.6 to 31.3 MPN / 100 ml. Samples were collected by the Sonoma County Water Agency. Data are summarized in the "Russian River Pathogen Data Report" of the Russian River Pathogen Project Database (ICE 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Healdsburg Memorial Beach.
Temporal Representation:	Samples were collected once every several days from May 17 to June 28, 2007.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The quality assurance information for these data is unknown.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	7109
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	13
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 13 E. coli samples from the Russian River at Camp Rose Beach exceed the evaluation guideline. Samples concentrations range from 0 to 10.9 MPN / 100 ml. Samples were collected by the Sonoma County Water Agency. Data are summarized in the "Russian River Pathogen Data Report" of the Russian River Pathogen Project Database (ICE 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Camp Rose Beach.
Temporal Representation:	Samples were collected once every several days from May 17 to June 28, 2007.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The quality assurance information for these data is unknown.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	7108
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	14
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 14 total coliform samples from the Russian River at Camp Rose Beach exceed the evaluation guideline. Samples concentrations range from 866.4 to 2,419.2 MPN / 100 ml. Samples were collected by the Sonoma County Water Agency. Data are summarized in the "Russian River Pathogen Data Report" of the Russian River Pathogen Project Database (ICE 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Camp Rose Beach.
Temporal Representation:	Samples were collected once every several days from May 17 to June 28, 2007. One sample was also collected on August 9, 2004.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The quality assurance information for these data is unknown.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6215
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	2
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	All 2 of the 2 total coliform samples collected in Foss Creek exceed the evaluation guideline. Sample concentrations are greater than 240,000 MPN / 100 ml. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003).
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6214
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	2
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	All 2 of the 2 E. coli samples from Foss Creek exceed the evaluation guideline. Sample concentrations range from 121,700 to 30,700 MPN / 100 ml. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6120
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	14
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 14 Enterococcus samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Sample concentrations range from 7 to 21 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample Enterococcus levels exceed 61 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at 4 sites along Healdsburg Memorial Beach: at the upstream end of the beach immediately downstream of the automobile bridge, in the area designated for young children to swim, at the downstream end of the swim area, and from the gravel bar at the fisherman’s beach which is immediately downstream of the dam. Samples were collected in well mixed flowing water, either in midstream or near the shore. Data from samples collected on the same day at more than one of these sites were averaged.
Temporal Representation:	Samples were collected weekly from May 30 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6119
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	10
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 10 E. coli samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Sample concentrations range from 8 to 62 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at 4 sites along Healdsburg Memorial Beach: at the upstream end of the beach immediately downstream of the automobile bridge, in the area designated for young children to swim, at the downstream end of the swim area, and from the gravel bar at the fisherman’s beach which is immediately downstream of the dam. Samples were collected in well mixed flowing water, either in midstream or near the shore. Data from samples collected on the same day at more than one of these sites were averaged.
Temporal Representation:	Samples were collected weekly on May 9 and July 5, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6118
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	12
Number of Exceedances:	7
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Of the 20 fecal coliform samples collected from the Russian River at Healdsburg Memorial Beach, 12 median fecal coliform concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 12 median values, 7 exceed the objective. Median value concentrations range from 30 to 130 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from the mainstem Russian River at 4 sites along Healdsburg Memorial Beach: at the upstream end of the beach immediately downstream of the automobile bridge, in the area designated for young children to swim, at the downstream end of the swim area, and from the gravel bar at the fisherman’s beach which is immediately downstream of the dam. Samples were collected in well mixed flowing water, either in midstream or near the shore. Data from samples collected on the same day at more than one of these sites were averaged.
Temporal Representation:	Samples were collected weekly from April 25 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6117
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	20
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 20 total coliform samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Sample concentrations range from 90 to 2,401 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at 4 sites along Healdsburg Memorial Beach: at the upstream end of the beach immediately downstream of the automobile bridge, in the area designated for young children to swim, at the downstream end of the swim area, and from the gravel bar at the fisherman’s beach which is immediately downstream of the dam. Samples were collected in well mixed flowing water, either in midstream or near the shore. Data from samples collected on the same day at more than one of these sites were averaged.
Temporal Representation:	Samples were collected weekly from April 25 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6115
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2 E. coli samples from the Russian River at Stream 2 in the Fitch Mountain area exceed the evaluation guideline. Sample concentrations range from 1 to 2 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 2. Stream 2 enters the Russian River about 1 mile downstream of Redwood Drive in the Fitch Mountain area. Stream 2 was sampled at Hilltop Drive.
Temporal Representation:	Samples were collected weekly on May 15 and May 22, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6113
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Of the 5 fecal coliform samples collected from the Russian River at Stream 2 in the Fitch Mountain area, 1 median fecal coliform concentration value was calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 1 median value, none exceed the objective. The median value is 8 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 2. Stream 2 enters the Russian River about 1 mile downstream of Redwood Drive in the Fitch Mountain area. Stream 2 was sampled at Hilltop Drive.
Temporal Representation:	Samples were collected weekly from April 25 to May 22, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6112
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	5
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 5 total coliform samples from the Russian River at Stream 2 in the Fitch Mountain area exceed the evaluation guideline. Sample concentrations range from 110 to 350 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 2. Stream 2 enters the Russian River about 1 mile downstream of Redwood Drive in the Fitch Mountain area. Stream 2 was sampled at Hilltop Drive.
Temporal Representation:	Samples were collected weekly from April 25 to May 22, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6107
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	9
Number of Exceedances:	6
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Six of the 9 Enterococcus samples from the Russian River at Stream 1 in the Fitch Mountain area exceed the evaluation guideline. Sample concentrations range from 9 to 201 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample Enterococcus levels exceed 61 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 1. Stream 1 enters the Russian River at Redwood Drive in the Fitch Mountain area. Stream 1 was sampled at 2 locations.
Temporal Representation:	Samples were collected weekly from May 30 to July 11, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6106
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	9
Number of Exceedances:	3
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three of the 9 E. coli samples from the Russian River at Stream 1 in the Fitch Mountain area exceed the evaluation guideline. Sample concentrations range from 9 to 1,652 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 1. Stream 1 enters the Russian River at Redwood Drive in the Fitch Mountain area. Stream 1 was sampled at 2 locations. Data from the 2 locations were averaged.
Temporal Representation:	Samples were collected weekly from May 9 to July 5, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6105
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	7
Number of Exceedances:	7
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Of the 12 fecal coliform samples collected from the Russian River at Stream 1 in the Fitch Mountain area, 7 median fecal coliform concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 7 median values, all 7 exceed the objective. Median values range from 240 to 1,600 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 1. Stream 1 enters the Russian River at Redwood Drive in the Fitch Mountain area. Stream 1 was sampled at 2 locations on the same day on 5 occasions. These data were averaged.
Temporal Representation:	Samples were collected weekly from May 9 to July 11, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6103
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	12
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 12 total coliform samples from the Russian River at Stream 1 in the Fitch Mountain area exceed the evaluation guideline. Sample concentrations range from 130 to 2,401 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from a unnamed tributary to the mainstem Russian River, designated as Stream 1. Stream 1 enters the Russian River at Redwood Drive in the Fitch Mountain area. Stream 1 was sampled at 2 locations on the same day on 5 occasions. These data were averaged.
Temporal Representation:	Samples were collected weekly from May 9 to July 11, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6102
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	37
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 37 Enterococcus samples from the Russian River at Fitch Mountain at Redwood Drive, Camp Rose, and Almond Way exceed the evaluation guideline. At Fitch Mountain at Redwood Drive, 10 samples were collected with concentrations ranging from 1 to 7 MPN / 100 ml. At Camp Rose, 13 samples were collected with concentrations ranging from 11 to 50 MPN / 100 ml. At Almond Drive, 14 samples were collected with concentrations ranging from 0 to 36 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample Enterococcus levels exceed 61 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at 3 sites in the Fitch Mountain reach: Fitch Mountain at Redwood Drive, Camp Rose Beach, and Almond Way. Fitch Mountain at Redwood Drive is located upstream of a small stream that enters the Russian River at Redwood Drive. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from May 30 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6101
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	27
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 27 E. coli samples from the Russian River at Fitch Mountain at Redwood Drive, Camp Rose, and Almond Way exceed the evaluation guideline. At Fitch Mountain at Redwood Drive, 9 samples were collected with concentrations ranging from 4.2 to 23.8 MPN / 100 ml. At Camp Rose, 9 samples were collected with concentrations ranging from 7.5 to 59.1 MPN / 100 ml. At Almond Drive, 9 samples were collected with concentrations ranging from 2 to 73.8 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at 3 sites in the Fitch Mountain reach: Fitch Mountain at Redwood Drive, Camp Rose Beach, and Almond Way. Fitch Mountain at Redwood Drive is located upstream of a small stream that enters the Russian River at Redwood Drive. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from May 9 to July 5, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6100
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	43
Number of Exceedances:	3
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Of the 54 fecal coliform samples collected from the Russian River at Fitch Mountain at Redwood Drive, Camp Rose Beach, and Almond Way, there are 43 median fecal coliform concentration values calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 43 median values, 3 exceed the objective. Two of the exceedances occurred at the Fitch Mountain at Redwood Drive site with median values of 140 and 80 MPN / 100 ml. The third exceedance occurred at the Almond Way site with a median value of 80 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from the mainstem Russian River at 3 sites in the Fitch Mountain reach: Fitch Mountain at Redwood Drive, Camp Rose Beach, and Almond Way. Fitch Mountain at Redwood Drive is located upstream of a small stream that enters the Russian River at Redwood Drive. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from April 25 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6099
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	54
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 54 total coliform samples from the Russian River at Fitch Mountain at Redwood Drive, Camp Rose, and Almond Way exceed the evaluation guideline. At Fitch Mountain at Redwood Drive, 15 samples were collected with concentrations ranging from 50 to 2,401 MPN / 100 ml. At Camp Rose, 19 samples were collected with concentrations ranging from 30 to 1,601 MPN / 100 ml. At Almond Drive, 20 samples were collected with concentrations ranging from 30 to 2,401 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at 3 sites in the Fitch Mountain reach: Fitch Mountain at Redwood Drive, Camp Rose Beach, and Almond Way. Fitch Mountain at Redwood Drive is located upstream of a small stream that enters the Russian River at Redwood Drive. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from April 25 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6098
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	14
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 14 Enterococcus samples from the Russian River at Geyserville exceeds the evaluation guideline. Sample concentrations ranged from less than 0 to 22 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample Enterococcus levels exceed 61 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Geyserville upstream of the Highway 128 bridge. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from May 30 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6097
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	9
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 9 E. coli samples from the Russian River at Geyserville exceeds the evaluation guideline. Sample concentrations ranged from 1 to 324 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Geyserville upstream of the Highway 128 bridge. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from May 9 to July 5, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6096
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	15
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Of the 19 fecal coliform samples collected from the Russian River at Geyserville, 15 median fecal coliform concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 15 median values, 1 exceeded the objective by exceeding 400 MPN / 100 ml during 20% of a 30-day period with a value of 540 MPN / 100 ml. In other words, there was one instance where the objective was exceeded more than 10% of the time; it was exceeded 20% of the time. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from the mainstem Russian River at Geyserville upstream of the Highway 128 bridge. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from April 25 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6095
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	19
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 19 total coliform samples from the Russian River at Geyserville exceed the evaluation guideline. Sample concentrations ranged from 50 to 1,601 MPN / 100 ml. Samples were collected by Regional Water Board staff as part of a targeted sampling event on the Russian River around Fitch Mountain. Data are summarized by Goodwin (1997).
Data Reference:	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Geyserville upstream of the Highway 128 bridge. Samples were collected in well mixed flowing water, either in midstream or near the shore.
Temporal Representation:	Samples were collected weekly from April 25 to September 6, 1995.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the study design methods described by Goodwin (1997).
QAPP Information Reference(s):	Staff Report Regarding Russian River Bacterial Water Quality Monitoring in the Vicinity of Fitch Mountain Sonoma County, California. April through September, 1995. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5943
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	38
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 38 Enterococcus samples from the Russian River at Healdsburg Memorial Beach exceeds the evaluation guideline. Sample concentrations ranged from less than 10 to 109 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 2006-2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. At all areas where shellfish may be harvested for human consumption (SHELL), the fecal coliform concentration throughout the water column shall not exceed 43 MPN / 100 ml for a 5-tube decimal dilution test or 49 MPN / 100 ml when a three-tube decimal dilution is used. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample Enterococcus levels exceed 61 MPN / 100 ml.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Healdsburg Memorial Beach near Healdsburg, in front of lifeguard stand 3 at the downstream end of the swim area. Samples were collected as far into the main river flow as possible while wading.
Temporal Representation:	The samples were generally collected once a week during the summer months between Memorial Day and Labor Day in 2006 to 2007. Samples for 2008 were collected from May to July. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5941
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	83
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 83 E. coli samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Sample concentrations ranged from 0 to 111 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 2002 - 2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Healdsburg Memorial Beach near Healdsburg, in front of lifeguard stand 3 at the downstream end of the swim area. Samples were collected as far into the main river flow as possible while wading.
Temporal Representation:	The samples were generally collected once a week during the summer months from Memorial Day to Labor Day in 2002-2003 and 2005-2007. Samples for 2008 were collected from May to July. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5936
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	104
Number of Exceedances:	49
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	In total between 1992 and 2008, of the 104 median fecal coliform or median e. coli samples collected from the Russian River at Healdsburg Memorial Beach, 49 exceed the objective. Fecal coliform samples were collected from 1980 to 2001. Of the 117 fecal coliform samples collected, 57 median fecal coliform concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 57 median values, 44 exceed the objective. The median values ranged from 49 to 240 MPN / 100 ml. From 2002 to 2008, e.coli samples were collected while fecal coliform samples were not collected. Since e. coli is one of the group of bacteria that comprise the fecal coliform group, it is logical that if median e.coli concentrations for any 30-day period are greater than 50 MPN / 100 ml, then the median fecal coliform concentrations for any 30-day period will also be greater than 50 MPN / 100 ml. Of the 71 e. coli samples collected, 47 median e. coli concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 47 median values, 5 exceed the objective. E.coli median values range from 10 to 53 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 1980 to 2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at Healdsburg Memorial Beach near Healdsburg. Samples collected in 2001, from May to June 11, 2002, and from May to June 26, 2007, were collected from the west bank. All the rest of the samples were collected from the east bank in front of lifeguard stand 3 at the downstream end of the swim area. Samples were collected as far into the main river flow as possible while wading.
Temporal Representation:	The samples were collected once in June 1980, October 1986, June 1988, and once a month from June to August 1989. In 1987-1994, 1997-2003, and 2005-2006, samples were generally collected once a week during the summer months between Memorial Day and Labor Day. In 2007, samples were collected from July 3 to August 7. In 2008, samples were collected from Memorial Day to July 15. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5935
Pollutant:	Total Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	151
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 151 total coliform samples from the Russian River at Healdsburg Memorial Beach exceed the evaluation guideline. Sample concentrations ranged from 23 to 8,164 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 1997 - 2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. At all areas where shellfish may be harvested for human consumption (SHELL), the fecal coliform concentration throughout the water column shall not exceed 43 MPN / 100 ml for a 5-tube decimal dilution test or 49 MPN / 100 ml when a three-tube decimal dilution is used. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample total coliform levels exceed 10,000 MPN / 100 ml.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Healdsburg Memorial Beach near Healdsburg, in front of lifeguard stand 3 at the downstream end of the swim area. Samples were collected as far into the main river flow as possible while wading.
Temporal Representation:	The samples were generally collected once a week during the summer months between Memorial Day and Labor Day in 1997 to 2003, and 2005 to 2007. Samples for 2008 were collected from May 27, 2008 to July 15, 2008. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5934
Pollutant:	Enterococcus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	37
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 37 Enterococcus samples from the Russian River at Camp Rose Beach exceed the evaluation guideline. Sample concentrations ranged from 10 to 41 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 2006-2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. At all areas where shellfish may be harvested for human consumption (SHELL), the fecal coliform concentration throughout the water column shall not exceed 43 MPN / 100 ml for a 5-tube decimal dilution test or 49 MPN / 100 ml when a three-tube decimal dilution is used. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample Enterococcus levels exceed 61 MPN / 100 ml.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Camp Rose Beach near Healdsburg, upstream of the river bend near the well head. Samples were collected from the center of the main river flow.
Temporal Representation:	The samples were generally collected once a week during the summer months between Memorial Day and Labor Day in 2006 to 2008. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5907
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	81
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 81 E. coli samples from the Russian River at Camp Rose Beach exceed the evaluation guideline. Sample concentrations ranged from 0 to 98 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 1997 - 2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Draft Guidance for Fresh Water Beaches" (DHS 2006): Beach posting is recommended when single sample E. coli levels exceed 235 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Camp Rose Beach near Healdsburg, upstream of the river bend near the well head. Samples were collected from the center of the main river flow.
Temporal Representation:	The samples were generally collected once a week during the summer months. Samples for 2002-2003 and 2005-2007 were collected from Memorial Day to Labor Day. Samples for 2008 were collected from May to July. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 29135, Indicator Bacteria Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	5906
Pollutant:	Fecal Coliform
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Water Contact Recreation
Number of Samples:	100
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	In total between 1992 and 2008, of the 100 median fecal coliform or median e. coli samples collected from the Russian River at Camp Rose Beach, none exceed the objective. Fecal coliform samples were collected from 1997 to 2001. Of the 69 fecal coliform samples collected, 47 median fecal coliform concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 47 median values, none exceed the objective. The median values ranged from 10 to 46 MPN / 100 ml. From 2002 to 2008, e.coli samples were collected while fecal coliform samples were not collected. Since e. coli is one of the group of bacteria that comprise the fecal coliform group, it is logical that if median e.coli concentrations for any 30-day period are greater than 50 MPN / 100 ml, then the median fecal coliform concentrations for any 30-day period will also be greater than 50 MPN / 100 ml. Of the 77 e. coli samples collected, 53 median e. coli concentration values were calculated based on a minimum of not less than 5 samples for any 30-day period. Of these 53 median values, none exceed the objective. E.coli median values range from 10 to 41 MPN / 100 ml. The samples were collected by staff of the North Coast Regional Water Quality Control Board. The data for 1980 to 2007 are presented in the Russian River Pathogen Data Report of the Russian River Pathogen Project Database (ICE 2008). The data for 2008 are presented by the Regional Water Board (NCRWQCB 2008).
Data Reference:	Russian River Pathogen Data Report of the Russian River Pathogen Project Database. Information Center for the Environment. Version 1. Beta. 2008. http://rrpp.ice.ucdavis.edu/
	Summer 2008 Russian River Bacteria Data. Downloaded July 23, 2008 from https://www.waterboards.ca.gov/northcoast/water_issues/programs/water_quality_sampling/russian_river.shtml. North Coast Regional Water Quality Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The bacteriological quality of waters of the North Coast Region shall not be degraded beyond natural background levels. In no case shall coliform concentrations in waters of the North Coast Region exceed the following: In waters designated for contact recreation (REC-1), the median fecal coliform concentration based on a minimum of not less than 5 samples for any 30-day period shall not exceed 50 MPN* / 100 ml, nor shall more than 10% of total samples during any 30-day period exceed 400 MPN / 100 ml. *Note: MPN is the most probable number of coliform units.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:	Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health.
Spatial Representation:	The samples were collected from the mainstem Russian River at Camp Rose Beach near Healdsburg, upstream of the river bend near the well head. Samples were collected from the center of the main river flow.
Temporal Representation:	The samples were generally collected once a week during the summer months between Memorial Day and Labor Day from 1997 to 2003 and from 2005 - 2007. In 2008, samples were collected once a week during the summer months between Memorial Day and July 15. The samples were often collected on the same day of the week and at the same time of day.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	The samples were collected in accordance with the "Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches" (Goodwin 2007).
QAPP Information Reference(s):	Protocol for Conducting Russian River Bacteriological Sampling at Summer Recreational Beaches. Prepared by Cathy Goodwin, NCRWQCB - July 21, 1999, July 29, 1999, May 2005, and May 22, 2007. North Coast Regional Water Quality Control Board

DECISION ID	20102	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Temperature, water
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Sources:	Flow Alteration/Regulation/Modification | Removal of Riparian Vegetation
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for removal from the Section 303(d) List under Section 4.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Three lines of evidence are available in the administrative record. LOE 33218 from the current Integrated Report cycle was not used in this decision as the data are provisional and have not gone through any quality assurance check. Zero of four grab samples from the mainstem Russian River (LOE 43279) exceed the objective, however, this sample size is not sufficient to determine with the power and confidence of the Listing Policy if the cold freshwater habitat (COLD) beneficial use is being protected, as a minimum of 26 samples is needed for application of Table 4.2. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) 303(d) listing determinations made prior to 2006 were not held in an assessment database. LOE 4765 is a placeholder for the 303(d) listing data and information from a previous assessment cycle that was initially utilized to make this listing determination. (4) Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 20102, Temperature, water Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	4765
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	Not Specified
Data Used to Assess Water Quality:	This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
Data Reference:	Placeholder reference pre-2006 303(d)
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:
Objective/Criterion Reference:
Evaluation Guideline:
Guideline Reference:
Spatial Representation:
Temporal Representation:
Environmental Conditions:
QAPP Information:	Unspecified
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 20102, Temperature, water Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43279
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Water Temperature.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5 degrees Fahrenheit (F) above natural receiving water temperature.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Per "Effects of Temperature, Dissolved Oxygen/Total Dissolved Gas, Ammonia, and pH on Salmonids" (Carter 2008): The lethal temperature evaluation guideline for both steelhead adult migration & holding and juvenile growth & rearing of 24°C applies in this water body June-October. The lethal temperature evaluation guideline for salmonid spawning, egg incubation & fry emergence is 20C and applies November-May. See LOE ID 31517 for more information on natural temperature alterations and salmonid presence and periodicity in this water body.
Guideline Reference:	Effects of Temperature, Dissolved Oxygen/Total Dissolved Gas, Ammonia, and pH on Salmonids. Implications for California's North Coast TMDLs. California Regional Water Quality Control Board, North Coast Region
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 20102, Temperature, water Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33218
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	57
Number of Exceedances:	3
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three of the fifty-seven (57) grab sample values were above the evaluation guideline. Temperatures ranged from 15.7 degrees C to 24.8 degrees C.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5 degrees Fahrenheit (F) above natural receiving water temperature.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Per "Effects of Temperature, Dissolved Oxygen/Total Dissolved Gas, Ammonia, and pH on Salmonids" (Carter 2008): The lethal temperature evaluation guideline for both steelhead adult migration & holding and juvenile growth & rearing of 24°C applies in this water body June-October. The lethal temperature evaluation guideline for salmonid spawning, egg incubation & fry emergence is 20C and applies November-May. See LOE ID 31517 for more information on natural temperature alterations and salmonid presence and periodicity in this water body.
Guideline Reference:	Effects of Temperature, Dissolved Oxygen/Total Dissolved Gas, Ammonia, and pH on Salmonids. Implications for California's North Coast TMDLs. California Regional Water Quality Control Board, North Coast Region
Spatial Representation:	Grab samples were collected at three different locations on the Russian River: Cloverdale River Park, Geyserville @ Highway 128 Bridge, and Alexander Valley Campground.
Temporal Representation:	Grab samples collected between 5/28/09 and 10/1/2009.
Environmental Conditions:
QAPP Information:	Per the Sonoma County Water Agency (SCWA) the data are provisional and may contain inaccuracies as they have not gone through QA procedures.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 20102, Temperature, water Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31517
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	Not Specified
Data Used to Assess Water Quality:	The following process is utilized to interpret the narrative Temperature Objective in the Basin Plan for impairment assessments. Step 1: determine if temperatures reflect natural conditions. If Yes, then the water body is not considered impaired, if No, Then go to Step 2. Step 2: Determine if temperatures adversely affect beneficial uses. If Yes, then the water body is considered impaired, if No, then go to Step 3. Step 3: Determine if temperatures are increased by 5 degrees F. If Yes, then water body is impaired, if No, then water body is not impaired.
Data Reference:	Presentation: Interpreting Temperature Standards in the North Coast Region. North Coast Regional Water Quality Control Board.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5 degrees Fahrenheit (F) above natural receiving water temperature.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	EVIDENCE OF ALTERATION OF NATURAL RECEIVING WATER TEMPERATURES (NON-NATURAL TEMPS): Water temperatures of the Russian River HA, including the Geyserville HSA, do not reflect natural conditions as environmental factors that influence water temperature have been altered by human activities. Examples of human alteration to the Russian River include flow changes resulting from the Potter Valley Project and dam construction, as well as landuse practices, such as logging and agriculture, which have resulted in alterations to streambanks, channel morphology, and stream temperatures (FERC 2002). EVIDENCE OF SALMONID PRESENCE & LIFE CYCLE USE: Coho, steelhead, and Chinook are all present in the Russian River watershed (CDFG 2002). Spawning, incubation, and emergence for these three salmonid species cumulatively occurs November through the end of May. Steelhead juveniles rear year-round in the Russian River (Steiner Environmental Consulting 1996).
Guideline Reference:	A History of the Salmonid Decline in the Russian River.
	Biological Opinion for the Proposed License Amendment to the Potter Valley Project (FERC Project #77-110)
	Historical Salmonid Streams and Calwater 2.2a Hydrologic Subareas. Figure shows Chinook, coho, and steelhead distribution in the Russian River watershed.
Spatial Representation:	Information pertains to Russian River HU, including the Geyserville HSA.
Temporal Representation:	Data are reflective of current conditions in this water body.
Environmental Conditions:
QAPP Information:	Information is considered to be of adequate quality for the Integrated Report.
QAPP Information Reference(s):

DECISION ID	29572	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Aldrin | Atrazine | Azinphos, Ethyl (Ethyl Guthion) | Azinphos-methyl (Guthion) | Bifenthrin | Bolstar | Carbofuran | Chlordane | Chlorothalonil | Chlorpyrifos | Chlorpyrifos, methyl | Ciodrin | Cyfluthrin | Cyhalothrin, Lambda | Cypermethrin | Dacthal | Deltamethrin | Demeton | Demeton s | Dichlofenthion | Dichlorvos | Dieldrin | Dimethoate | Dioxathion | Dyfonate (Fonofos or Fonophos) | Endosulfan | Endosulfan sulfate | Endrin | Endrin Ketone | Endrin aldehyde | Esfenvalerate/Fenvalerate | Ethion | Ethoprop | Famphur | Fenchlorphos | Fenitrothion | Fenpropathrin | Fensulfothion | Fenthion | Glyphosate | Heptachlor | Heptachlor epoxide | Hexachlorobenzene/ HCB | Hexachlorocyclohexane (HCH), alpha | Hexachlorocyclohexane (HCH), beta | Leptophos | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Malathion | Merphos | Methidathion | Methoxychlor | Methyl Parathion | Mevinphos | Mirex | Molinate | Naled | Oxadiazon | Oxychlordane | Parathion | Permethrin, total | Phorate | Phosmet | Phosphamidon | Prometon (Prometone) | Prometryn | Propazine | Secbumeton | Simazine | Simetryn | Sulfotep | Tedion | Terbufos | Terbuthylazine | Terbutryn | Tetrachlorvinphos | Thiobencarb/Bolero | Thionazin | Tokuthion | Toxaphene | Trichlorfon | Trichloronate | alpha-Endosulfan (Endosulfan 1) | beta-BHC (Benzenehexachloride or beta-HCH) | beta-Endosulfan (Endosulfan 2) | cis-Nonachlor | delta-BHC (Benzenehexachloride or delta-HCH) | o,p'-DDD (Dichlorodiphenyldichloroethane)) | o,p'-DDE (Dichlorodiphenyldichloroethylene) | p,p'-DDD (Dichlorodiphenyldichloroethane) | p,p'-DDE | p,p'-DDMU | trans-Nonachlor
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	These pollutants are being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Forty-seven lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use, forty lines of evidence are available to assess protection of the warm freshwater habitat (WARM) beneficial use, twelve lines of evidence are available to assess protection of the commercial and sport fishing (COMM) beneficial use, and twenty lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use. It should be noted that data from LOEs 30154 and 29953 from the 2010 Integrated Report are re-assessed in LOEs 46607 and 46604 respectively. Additionally, data from LOE 46604 do not have evaluation guidelines available to interpret the water quality objectives and, therefore, there is insufficient information to determine if the objective is being exceeded for the pollutants in these LOEs. Zero of 3,758 pesticide water samples exceed the MUN water quality objective, zero of 84 pesticide water samples exceeded the COLD objective, zero of 78 pesticide water samples exceeded the WARM objective, and zero of 24 pesticide water samples exceeded the COMM objective. Additionally, zero of one sediment sample for each of the pesticides assessed in this decision exceed the COLD and WARM objective, however these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 3,758 pesticide water samples exceed the MUN water quality objective, zero of 84 pesticide water samples exceeded the COLD objective, zero of 78 pesticide water samples exceeded the WARM objective, and zero of 24 pesticide water samples exceeded the COMM objective. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46607
Pollutant:	Aldrin | Atrazine | Carbofuran | Chlordane | Chlorpyrifos | Dacthal | Dieldrin | Endrin | Glyphosate | Heptachlor | Heptachlor epoxide | Hexachlorobenzene/ HCB | Hexachlorocyclohexane (HCH), alpha | Hexachlorocyclohexane (HCH), beta | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Methoxychlor | Molinate | Simazine | Thiobencarb/Bolero | Toxaphene
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2157
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2157 pesticide samples collected in the mainstem Russian River exceed the objective as all of the samples were either measured as non-detect or were measured as detected but not quantified with reporting limits below objectives or evaluation guidelines. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008). This LOE and LOE 46606 contain data originally evaluated in LOE 30154, which included data from a site that is not in this water body. The data from LOE 30154 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan. No evaluation guidelines for the dissolved fractions of the pesticides assessed for this waterbody for the Municipal & Domestic Supply beneficial use could be found that meet the requirements of Section 6.1.3 of the Listing Policy.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Hexachlorocyclohexane, alpha (0.0026 ug/l) Hexachlorocyclohexane, beta (0.0091ug/l) Aldrin (0.000049 ug/l) Atrazine (0.001 ug/l) Carbofuran (0.04 mg/l) Chlordane (0.0001 ug/l) Chlorpyrifos (0.083 ug/l) Dacthal (70 ug/l) Dieldrin (0.00014 ug/l) Endrin (0.002 ug/l) Glyphosate (700 ug/l) Heptachlor (0.01 ug/l) Heptachlor epoxide (0.01 ug/l) Hexachlorobenzene/ HCB (0.001 ug/l) Lindane/gamma Hexachlorocyclohexane (gamma-HCH) (.98 ug/l) Methoxychlor (0.03 mg/l) Molinate (0.02 mg/l) Simazine (0.04 mg/l) Thiobencarb/Bolero (0.07 mg/l) Toxaphene (0.003 mg/l)
Guideline Reference:	National recommended water quality criteria: 2002. EPA-822-R-02-047 Washington, D.C. USEPA
	Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43201
Pollutant:	Thiobencarb/Bolero
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Thiobencarb.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A for thiobencarb is 0.001 mg/L
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	44107
Pollutant:	Methyl Parathion
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Parathion, Methyl.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for methyl parathion is the median lethal concentration (LC50) of 6 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 6 ug/g is the geometric mean of LC50 values for methyl parathion from Ding et al. (2011).
Guideline Reference:	Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83–92.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	44106
Pollutant:	Methyl Parathion
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Parathion, Methyl.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for methyl parathion is the median lethal concentration (LC50) of 6 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 6 ug/g is the geometric mean of LC50 values for methyl parathion from Ding et al. (2011).
Guideline Reference:	Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83–92.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	44040
Pollutant:	Fenpropathrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fenpropathrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for fenpropathrin is the median lethal concentration (LC50) of 1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1 ug/g is the geometric mean of LC50 values for fenpropathrin from Ding et al. ( 2011).
Guideline Reference:	Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83–92.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	44021
Pollutant:	Fenpropathrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fenpropathrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for fenpropathrin is the median lethal concentration (LC50) of 1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1 ug/g is the geometric mean of LC50 values for fenpropathrin from Ding et al. ( 2011).
Guideline Reference:	Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83–92.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43980
Pollutant:	Permethrin, total
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Permethrin, Total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for permethrin is the median lethal concentration (LC50) of 8.9 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 8.9 ug/g is the geometric mean of LC50 values for permethrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43979
Pollutant:	Permethrin, total
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Permethrin, Total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for permethrin is the median lethal concentration (LC50) of 8.9 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 8.9 ug/g is the geometric mean of LC50 values for permethrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43957
Pollutant:	Esfenvalerate/Fenvalerate
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Esfenvalerate/Fenvalerate, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.5 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.5 ug/g is the geometric mean of LC50 values for esfenvalerate/fenvalerate from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43956
Pollutant:	Esfenvalerate/Fenvalerate
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Esfenvalerate/Fenvalerate, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.5 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.5 ug/g is the geometric mean of LC50 values for esfenvalerate/fenvalerate from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43784
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for endrin is 207 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43783
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for endrin is 207 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43720
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for dieldrin is 61.8 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43719
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for dieldrin is 61.8 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43684
Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for Lindane (gamma-HCH) is 4.99 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43683
Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for HCH, gamma.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for Lindane (gamma-HCH) is 4.99 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43622
Pollutant:	Deltamethrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Deltamethrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for deltamethrin is the median lethal concentration (LC50) of 0.79 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.79 ug/g is the geometric mean of LC50 values for deltamethrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43621
Pollutant:	Deltamethrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Deltamethrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for deltamethrin is the median lethal concentration (LC50) of 0.79 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.79 ug/g is the geometric mean of LC50 values for deltamethrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43601
Pollutant:	Cyhalothrin, Lambda
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cyhalothrin, lambda, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for lambda-cyhalothrin is the median lethal concentration (LC50) of 0.44 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.44 ug/g is the geometric mean of LC50 values for lambda-cyhalothrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43590
Pollutant:	Cyhalothrin, Lambda
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cyhalothrin, lambda, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for lambda-cyhalothrin is the median lethal concentration (LC50) of 0.44 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.44 ug/g is the geometric mean of LC50 values for lambda-cyhalothrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43564
Pollutant:	Cypermethrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cypermethrin, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for cypermethrin is the median lethal concentration (LC50) of 0.3 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.3 ug/g is the geometric mean of LC50 values for cypermethrin from Maund et al. (2002).
Guideline Reference:	Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43563
Pollutant:	Cypermethrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cypermethrin, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for cypermethrin is the median lethal concentration (LC50) of 0.3 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.3 ug/g is the geometric mean of LC50 values for cypermethrin from Maund et al. (2002).
Guideline Reference:	Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43543
Pollutant:	Cyfluthrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cyfluthrin, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for cyfluthrin is the median lethal concentration (LC50) of 1.1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.1 ug/g is the geometric mean of LC50 values for cyfluthrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43542
Pollutant:	Cyfluthrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cyfluthrin, total.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for cyfluthrin is the median lethal concentration (LC50) of 1.1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.1 ug/g is the geometric mean of LC50 values for cyfluthrin from Amweg et al. (2005).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43525
Pollutant:	Chlorpyrifos
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlorpyrifos.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for chlorpyrifos is the median lethal concentration (LC50) of 1.77 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Amweg and Weston, 2007).
Guideline Reference:	Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43524
Pollutant:	Chlorpyrifos
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlorpyrifos.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for chlorpyrifos is the median lethal concentration (LC50) of 1.77 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Amweg and Weston, 2007).
Guideline Reference:	Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43507
Pollutant:	Bifenthrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Bifenthrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for bifenthrin is the median lethal concentration (LC50) of 0.43 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.43 ug/g is the geometric mean of LC50 values for bifenthrin from Amweg et al. (2005) and Amweg and Weston (2007).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43506
Pollutant:	Bifenthrin
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Bifenthrin.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for bifenthrin is the median lethal concentration (LC50) of 0.43 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.43 ug/g is the geometric mean of LC50 values for bifenthrin from Amweg et al. (2005) and Amweg and Weston (2007).
Guideline Reference:	Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5
	Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43404
Pollutant:	Simazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Simazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for simazine is 90 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43360
Pollutant:	Simazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Simazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64444-A for simazine is 0.004 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43346
Pollutant:	Propazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Propazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for propazine is 1 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43298
Pollutant:	Propazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Propazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for propazine is 1 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43217
Pollutant:	Thiobencarb/Bolero
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Thiobencarb.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for thiobencarb is 1.4 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46604
Pollutant:	Azinphos, Ethyl (Ethyl Guthion) | Bolstar | Carbofuran | Chlorothalonil | Chlorpyrifos, methyl | Ciodrin | Demeton | Dichlofenthion | Dichlorvos | Dimethoate | Dioxathion | Dyfonate (Fonofos or Fonophos) | Endrin Ketone | Ethion | Ethoprop | Famphur | Fenchlorphos | Fenitrothion | Fensulfothion | Fenthion | Leptophos | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Merphos | Methidathion | Methyl Parathion | Mevinphos | Phosphamidon | Prometon (Prometone) | Prometryn | Propazine | Secbumeton | Simetryn | Sulfotep | Tedion | Terbufos | Terbuthylazine | Terbutryn | Tetrachlorvinphos | Thiobencarb/Bolero | Thionazin | Tokuthion | Trichlorfon | Trichloronate | beta-BHC (Benzenehexachloride or beta-HCH) | cis-Nonachlor | delta-BHC (Benzenehexachloride or delta-HCH) | o,p'-DDD (Dichlorodiphenyldichloroethane)) | o,p'-DDE (Dichlorodiphenyldichloroethylene) | p,p'-DDD (Dichlorodiphenyldichloroethane) | p,p'-DDE | p,p'-DDMU | trans-Nonachlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2157
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2157 pesticide samples collected in the mainstem Russian River exceed the objective as all of the samples were either measured as non-detect or were measured as detected but not quantified with reporting limits below objectives or evaluation guidelines. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008). This LOE and LOE 46605 contain data originally evaluated in LOE 29953, which included data from a site that is not in this water body. The data from LOE 29953 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan. No evaluation guidelines for the dissolved fractions of the pesticides assessed for this waterbody for the Municipal & Domestic Supply beneficial use could be found that meet the requirements of Section 6.1.3 of the Listing Policy.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43184
Pollutant:	Thiobencarb/Bolero
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Thiobencarb.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for thiobencarb is 1.4 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43156
Pollutant:	Simazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Simazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for simazine is 90 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43105
Pollutant:	Parathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The USEPA national ambient water quality criterion for freshwater aquatic life 4-hour maximum for parathion is 0.013 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43059
Pollutant:	Parathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The USEPA national ambient water quality criterion for freshwater aquatic life 4-hour maximum for parathion is 0.013 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42951
Pollutant:	Prometon (Prometone)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Prometon.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for prometon is 98 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42949
Pollutant:	Phosmet
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Phosmet.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for phosmet is 5.6 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42941
Pollutant:	Prometryn
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Prometryn.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for prometryn is 1 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42911
Pollutant:	Phosmet
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Phosmet.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for phosmet is 5.6 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42903
Pollutant:	Prometryn
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Prometryn.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for prometryn is 1 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42901
Pollutant:	Prometon (Prometone)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Prometon.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for prometon is 98 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42869
Pollutant:	Phorate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Phorate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for phorate is 2 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42855
Pollutant:	Phorate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Phorate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for phorate is 2 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42837
Pollutant:	Methyl Parathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Parathion, Methyl.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The California Department of Fish and Game instantaneous criteria for Methyl Parathion is 0.08 ug/L.
Guideline Reference:	Hazard Assessment of the Insecticide Methyl to Aquatic Organisms in the Sacramento River System
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42823
Pollutant:	Methyl Parathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Parathion, Methyl.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The California Department of Fish and Game instantaneous criteria for Methyl Parathion is 0.08 ug/L.
Guideline Reference:	Hazard Assessment of the Insecticide Methyl to Aquatic Organisms in the Sacramento River System
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42769
Pollutant:	Malathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The University of California, Davis chronic criterion for the protection of freshwater aquatic life for malathion is 0.028 ug/L.
Guideline Reference:	Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42747
Pollutant:	Methidathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Methidathion.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for methidathion is 0.86 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42706
Pollutant:	Malathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The University of California, Davis, chronic criterion for the protection of freshwater aquatic life for malathion is 0.028 ug/L.
Guideline Reference:	Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42609
Pollutant:	Molinate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Molinate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for molinate is 0.6 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42587
Pollutant:	Molinate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Molinate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for molinate is 0.6 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42561
Pollutant:	Molinate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Molinate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64444-A for molinate is 0.02 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42538
Pollutant:	Mirex
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The criterion continuous concentration from the USEPA national ambient water quality criterion for the protection of freshwater aquatic life for mirex is 0.001 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42535
Pollutant:	Mirex
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The criterion continuous concentration from the USEPA national ambient water quality criterion for the protection of freshwater aquatic life for mirex is 0.001 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42519
Pollutant:	Methoxychlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Methoxychlor.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The USEPA national ambient water quality criterion for freshwater aquatic life instantaneous maximum for methoxychlor is 0.03 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42504
Pollutant:	Methoxychlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Methoxychlor.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64444-A for methoxychlor is 0.03 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42485
Pollutant:	Methoxychlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Methoxychlor.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The USEPA national ambient water quality criterion for freshwater aquatic life instantaneous maximum for methoxychlor is 0.03 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42468
Pollutant:	Methidathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Methidathion.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for methidathion is 0.86 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42444
Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, gamma.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for HCH, gamma (Lindane or gamma-BHC) to protect aquatic life in freshwater criterion maximum concentration is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42437
Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, gamma.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for HCH, gamma (Lindane or gamma-BHC) to protect aquatic life in freshwater criterion maximum concentration is 0.95 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42431
Pollutant:	Heptachlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Heptachlor.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor to protect aquatic life in freshwater criterion continuous concentration (expressed as a 4-day average) is 0.0038 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42409
Pollutant:	Heptachlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Heptachlor.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor to protect aquatic life in freshwater criterion continuous concentration (expressed as a 4-day average) is 0.0038 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42383
Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, gamma.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for gamma-BHC (Lindane, gamma-HCH) to protect human health from the consumption of water and organisms is 0.019 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42358
Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, gamma.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for gamma-BHC (Lindane, gamma-HCH) to protect human health from consumption of organisms only is 0.063 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42355
Pollutant:	Heptachlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor to protect of human health from the consumption of water and organisms is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42330
Pollutant:	Heptachlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor to protect human health from consumption of organisms only is 0.00021 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42282
Pollutant:	Heptachlor epoxide
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Heptachlor epoxide.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor epoxide to protect aquatic life in freshwater criterion continuous concentration (expressed as a 4-day average) is 0.0038 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42235
Pollutant:	Heptachlor epoxide
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor epoxide to protect of human health from the consumption of water and organisms is 0.00010 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42184
Pollutant:	Heptachlor epoxide
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Heptachlor epoxide.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor epoxide to protect aquatic life in freshwater criterion continuous concentration (expressed as a 4-day average) is 0.0038 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42165
Pollutant:	Heptachlor epoxide
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for heptachlor epoxide to protect human health from consumption of organisms only is 0.00011 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42126
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endrin to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.036 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42118
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endrin to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.036 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42097
Pollutant:	Endosulfan sulfate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan sulfate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endosulfan sulfate to protect of human health from the consumption of water and organisms is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42090
Pollutant:	Endrin aldehyde
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endrin Aldehyde.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endrin aldehyde to protect of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42064
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endrin to protect of human health from the consumption of water and organisms is 0.76 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42039
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endrin to protect human health from consumption of organisms only is 0.81ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42033
Pollutant:	Endosulfan sulfate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan sulfate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The USEPA national ambient water quality criterion for freshwater aquatic life 24 hour average maximum for endodulfan sulfate is 0.056 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42011
Pollutant:	Endrin aldehyde
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endrin Aldehyde.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endrin aldehyde to protect human health from consumption of organisms only is 0.81ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41979
Pollutant:	Endosulfan sulfate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan sulfate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The USEPA national ambient water quality criterion for freshwater aquatic life 24 hour average maximum for endodulfan sulfate is 0.056 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41966
Pollutant:	Hexachlorocyclohexane (HCH), beta
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, beta.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for beta-BHC (HCH, beta) to protect human health from the consumption of water and organisms is 0.014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41954
Pollutant:	Hexachlorocyclohexane (HCH), alpha
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, alpha.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for alpha-BHC (HCH, alpha) to protect human health from consumption of organisms only is 0.013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41928
Pollutant:	Hexachlorocyclohexane (HCH), alpha
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, alpha.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for alpha-BHC (HCH, alpha) to protect human health from the consumption of water and organisms is 0.0039 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41908
Pollutant:	Glyphosate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Glyphosate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for glyphosate is 55000 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41907
Pollutant:	Hexachlorocyclohexane (HCH), beta
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for HCH, beta.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for beta-BHC (HCH, beta) to protect human health from consumption of organisms only is 0.046 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41882
Pollutant:	Glyphosate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Glyphosate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for glyphosate is 700 ug/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41863
Pollutant:	Glyphosate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Glyphosate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for glyphosate is 55000 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41847
Pollutant:	Dyfonate (Fonofos or Fonophos)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Fonofos (Dyfonate).
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for fonofos is 0.45 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41831
Pollutant:	Dyfonate (Fonofos or Fonophos)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Fonofos (Dyfonate).
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for fonofos is 0.45 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41807
Pollutant:	Dimethoate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dimethoate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for dimethoate is 43 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41803
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for dieldrin to protect human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41777
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for dieldrin to protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41770
Pollutant:	alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan I.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for alpha-endosulfan to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41745
Pollutant:	Dimethoate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dimethoate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for glyphosate is 43 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41713
Pollutant:	Dichlorvos
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dichlorvos.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for dichlorvos is 7.2 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41686
Pollutant:	alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan I.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for alpha-endosulfan to protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41683
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dieldrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for dieldrin to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41675
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dieldrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for dieldrin to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41650
Pollutant:	Dichlorvos
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dichlorvos.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life MATC for dichlorvos is 7.2 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41643
Pollutant:	Endosulfan sulfate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan sulfate.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for endosulfan sulfate to protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41626
Pollutant:	beta-Endosulfan (Endosulfan 2)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan II.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for beta-endosulfan to protect of human health from the consumption of water and organisms is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41620
Pollutant:	beta-Endosulfan (Endosulfan 2)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan II.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for beta-endosulfan to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41598
Pollutant:	beta-Endosulfan (Endosulfan 2)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan II.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for beta-endosulfan to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41561
Pollutant:	beta-Endosulfan (Endosulfan 2)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan II.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for beta-endosulfan to protection of human health from consumption of organisms only is 240 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41546
Pollutant:	alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan I.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for alpha-endosulfan to protect aquatic life in freshwater as criterion continuous concentration (expressed as a 4-day average) is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41529
Pollutant:	alpha-Endosulfan (Endosulfan 1)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Endosulfan I.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for alpha-endosulfan to protect of human health from the consumption of water and organisms is 110 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41433
Pollutant:	Atrazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Atrazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for atrazine is 43 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41367
Pollutant:	Atrazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Atrazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for atrazine is 1 ug/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41324
Pollutant:	Azinphos-methyl (Guthion)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The National Recommended Water Quality Criteria for Azinphos Methyl (Guthion) for the protection of freshwater aquatic life is a maximum of 0.01 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41275
Pollutant:	Dacthal
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dacthal.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for dacthal 6600 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41227
Pollutant:	Dacthal
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Dacthal.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life LC50 for dacthal 6600 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41152
Pollutant:	Chlorpyrifos
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference:	Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41138
Pollutant:	Atrazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Atrazine.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	According to the USEPA Office of Pesticide Programs Ecotoxicity database, the freshwater aquatic life EC50 for atrazine is 43 ug/L.
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	40978
Pollutant:	Aldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Aldrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric aldrin criterion maximum concentration to protect aquatic life in freshwater is 3 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	40942
Pollutant:	Aldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for aldrin criteria for the protection of human health from consumption of organisms only is 0.00014 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	40922
Pollutant:	Aldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for aldrin to protect of human health from the consumption of water and organisms is 0.00013 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	40914
Pollutant:	Aldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Aldrin.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for aldrin to protect aquatic life in freshwater as criterion maximum concentration is 3 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33702
Pollutant:	Chlordane
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 1 sample collected did not exceed the criteria for chlordane concentration (Sum of trans-Chlordane, cis-Chlordane, cis-Nonachlor, trans-Nonachlor, and Oxychlordane).
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The Probable Effect Concentration for Chlordane in freshwater sediments is 17.6 ug/kg.
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data were collected at the following station 114RRAXRV (Russian River at Alexander RV Park).
Temporal Representation:	One sample was collected on 10/14/2008.
Environmental Conditions:
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33161
Pollutant:	Endosulfan
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 3 samples exceeded the criteria.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The Water Quality Control Plan for the North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. The endosulfan criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L. This value corresponds to the sum of alpha-endosulfan and beta-endosulfan (USEPA National Recommended Water Quality Criteria, 2006).
Objective/Criterion Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007, 4/7/2008, and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33098
Pollutant:	Chlordane
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The method detection limit for all 3 of the non-detect samples was greater than the criteria and thus the data were not used in this assessment. Total chlordane is assessed as the sum of cis-chlordane, trans-chlordane, cis-nonachlor, trans-nonachlor, and oxychlordane.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The Basin Plan for the Regional Water Quality Control Board, North Coast Region states that all waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life (NCRWQCB 2011).The total chlordane criterion for the protection of human health from the consumption of water and organisms is 0.00057 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652; Russian River at Crocker Road
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33009
Pollutant:	Chlordane
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 3 samples exceeded the criterion continuous concentration for chlordane (total). Total chlordane is assessed as the sum of cis-chlordane, trans-chlordane, cis-nonachlor, trans-nonachlor, and oxychlordane.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The Basin Plan for the Regional Water Quality Control Board, North Coast Region states that all waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life (NCRWQCB 2011). The chlordane criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.0043 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652; Russian River at Crocker Road
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	30154
Pollutant:	Aldrin | Atrazine | Carbofuran | Chlordane | Chlorpyrifos | Dacthal | Dieldrin | Endrin | Glyphosate | Heptachlor | Heptachlor epoxide | Hexachlorobenzene/ HCB | Hexachlorocyclohexane (HCH), alpha | Hexachlorocyclohexane (HCH), beta | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Methoxychlor | Molinate | Simazine | Thiobencarb/Bolero | Toxaphene
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3716
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 3,716 pesticide samples collected in the mainstem Russian River exceed the objective as all of the samples were either measured as non-detect or were measured as detected but not quantified with reporting limits below objectives or evaluation guidelines. The samples were analyzed for 97 pesticides, pesticide constituents, isomers, or metabolites. For each of the 97 pesticide analytes, 2 to 19 samples were collected. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan. No evaluation guidelines for the dissolved fractions of the pesticides assessed for this waterbody for the Municipal & Domestic Supply beneficial use could be found that meet the requirements of Section 6.1.3 of the Listing Policy.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Hexachlorocyclohexane, alpha (0.0026 ug/l) Hexachlorocyclohexane, beta (0.0091ug/l) Aldrin (0.000049 ug/l) Atrazine (0.001 ug/l) Carbofuran (0.04 mg/l) Chlordane (0.0001 ug/l) Chlorpyrifos (0.083 ug/l) Dacthal (70 ug/l) Dieldrin (0.00014 ug/l) Endrin (0.002 ug/l) Glyphosate (700 ug/l) Heptachlor (0.01 ug/l) Heptachlor epoxide (0.01 ug/l) Hexachlorobenzene/ HCB (0.001 ug/l) Lindane/gamma Hexachlorocyclohexane (gamma-HCH) (.98 ug/l) Methoxychlor (0.03 mg/l) Molinate (0.02 mg/l) Simazine (0.04 mg/l) Thiobencarb/Bolero (0.07 mg/l) Toxaphene (0.003 mg/l)
Guideline Reference:	National recommended water quality criteria: 2002. EPA-822-R-02-047 Washington, D.C. USEPA
	Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency
	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Spatial Representation:	Samples were collected from the mainstem Russian River at 4 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (3) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX), and (4) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 29572, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	29953
Pollutant:	Azinphos, Ethyl (Ethyl Guthion) | Bolstar | Carbofuran | Chlorothalonil | Chlorpyrifos, methyl | Ciodrin | Demeton s | Dichlofenthion | Dichlorvos | Dimethoate | Dioxathion | Dyfonate (Fonofos or Fonophos) | Endrin Ketone | Ethion | Ethoprop | Famphur | Fenchlorphos | Fenitrothion | Fensulfothion | Fenthion | Leptophos | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | Merphos | Methidathion | Methyl Parathion | Mevinphos | Naled | Oxadiazon | Oxychlordane | Phorate | Phosmet | Phosphamidon | Prometon (Prometone) | Prometryn | Propazine | Secbumeton | Simetryn | Sulfotep | Tedion | Terbufos | Terbuthylazine | Terbutryn | Tetrachlorvinphos | Thiobencarb/Bolero | Thionazin | Tokuthion | Trichlorfon | Trichloronate | beta-BHC (Benzenehexachloride or beta-HCH) | cis-Nonachlor | delta-BHC (Benzenehexachloride or delta-HCH) | o,p'-DDD (Dichlorodiphenyldichloroethane)) | o,p'-DDE (Dichlorodiphenyldichloroethylene) | p,p'-DDD (Dichlorodiphenyldichloroethane) | p,p'-DDE | p,p'-DDMU | trans-Nonachlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	3716
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 3,716 pesticide samples collected in the mainstem Russian River exceed the objective as all of the samples were either measured as non-detect or were measured as detected but not quantified with reporting limits below objectives or evaluation guidelines. The samples were analyzed for 97 pesticides, pesticide constituents, isomers, or metabolites. For each of the 97 pesticide analytes, 2 to 19 samples were collected. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan. No evaluation guidelines for the dissolved fractions of the pesticides assessed for this waterbody for the Municipal & Domestic Supply beneficial use could be found that meet the requirements of Section 6.1.3 of the Listing Policy.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 4 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (3) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX), and (4) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles. .
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):

DECISION ID	27278	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Aluminum
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. It should be noted that data from LOE 25385 from the 2010 Integrated Report were re-assessed this current Integrated Report cycle in LOEs 46516 and 46517. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Three of 37 samples exceeded the aluminum objective and this does not exceed the allowable frequency in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 27278, Aluminum Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41362
Pollutant:	Aluminum
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 2 of 4 samples exceed the criterion for Aluminum.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A for Aluminum is 0.2 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 27278, Aluminum Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46516
Pollutant:	Aluminum
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	33
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 33 aluminum samples collected from the mainstem Russian River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE and LOE 46517 contain data originally evaluated in LOE 25385, which included data from a site that is not in this water body. The data from LOE 25385 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The Maximum Contaminant Level for aluminum is 1.0 mg/l (1,000 ug/L).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 5 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS) and (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 27278, Aluminum Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25385
Pollutant:	Aluminum
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	48
Number of Exceedances:	4
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Four of the 48 aluminum samples collected from the mainstem Russian River exceed the objective. Sample concentrations range from 7.42 to 1,787.00 ug/L. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The Maximum Contaminant Level for aluminum is 1.0 mg/l (1,000 ug/L).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 4 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (4) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (Puckett 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	22453	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Arsenic | Cadmium | Chromium (total) | Copper | Lead | Mercury | Nickel | Selenium | Silver | Toxicity | Zinc
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	These pollutants are being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Nine lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use, fifteen lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use, six lines of evidence are available to assess protection of the warm freshwater habitat (WARM) beneficial use, and one line of evidence is available to assess protection of the commercial and sport fishing (COMM) beneficial use. It should be noted that data from LOE 21544 from the 2010 Integrated Report were re-assessed during this listing cycle in LOEs 46514, 46515, 46867, 46873, 46866, and 46872. Zero of 232 metals water samples exceed the MUN water quality objective and zero of 32 metals water samples exceeded the COLD water quality objective. Additionally, zero of four water samples exceed the COMM objective and zero of one sediment sample for each of the metals assessed in this decision exceed the COLD and WARM water quality toxicity objective (no sample showed sediment toxicity), however these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 232 metals water samples exceed the MUN water quality objective and zero of 32 metals water samples exceeded the COLD water quality objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43289
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for arsenic is 33 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43288
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for arsenic is 33 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43236
Pollutant:	Zinc
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Zinc.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A for Zinc is 5 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42783
Pollutant:	Mercury
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Mercury.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for mercury to protect of human health from the consumption of water and organisms is 0.050 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42733
Pollutant:	Mercury
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Mercury.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for mercury to protect of human health from the consumption of organisms only is 0.051 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42634
Pollutant:	Mercury
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Mercury.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	National Recommended Water Quality Criteria Continuous Concentrations (4-day average concentrations) for freshwater aquatic organisms exposure to Total mercury is 0.77 ug/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42624
Pollutant:	Lead
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Lead.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for MUN shall not contain concentrations of chemical constituents in excess of values listed in Table 3-2 of the Basin Plan. The value for lead is 0.05 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41444
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Arsenic.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for arsenic is 0.010 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41218
Pollutant:	Copper
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Copper.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A copper is 1.0 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41149
Pollutant:	Cadmium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Cadmium.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for cadmium 0.005 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33676
Pollutant:	Silver
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for silver.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33203
Pollutant:	Lead
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for lead.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33202
Pollutant:	Copper
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for copper.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33201
Pollutant:	Cadmium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for cadmium.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33125
Pollutant:	Silver
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for silver.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33124
Pollutant:	Zinc
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for zinc.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32086
Pollutant:	Toxicity
LOE Subgroup:	Toxicity
Matrix:	Sediment
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	TOXICITY TESTING
Data Used to Assess Water Quality:	One sample was collected to evaluate sediment toxicity. Growth and/or survival of Hyalella azteca was examined between the sediment field sample and a sediment control, utilizing a 10-day toxicity test. The sample did not exhibit significant toxicity.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Water Board.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold.
Guideline Reference:	Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064
Spatial Representation:	The sample was collected at station 114RRAXRV, Russian River at Alexander RV Park.
Temporal Representation:	The sample was collected in October 14, 2008.
Environmental Conditions:
QAPP Information:	All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	21544
Pollutant:	Arsenic | Cadmium | Chromium (total) | Copper | Lead | Mercury | Nickel | Selenium | Silver | Zinc
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	449
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 449 metal samples collected in the mainstem Russian River exceed the objectives. For each of the 10 metal parameters samples, there were 20 samples each collected at the Cloverdale site, 5 samples each collected at the site downstream of the Cloverdale Water Treatment Plan, and 19 to 20 samples each collected at the Healdsburg site. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): Arsenic objective is 0.05 mg/L. Cadmium objective is 0.01 mg/L. Chromium objective is 0.05 mg/L. Lead objective is 0.05 mg/L. Mercury objective is 0.002 mg/L. Selenium objective is 0.01 mg/L. Silver objective is 0.05 mg/L. Per 22 CCR 64431: Nickel maximum contaminant level is 0.1 mg/L. Per 22 CCR 64449: Copper secondary maximum contaminant level is 1.0 mg/L. Zinc secondary maximum contaminant level is 5.0 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43371
Pollutant:	Selenium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Selenium.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for selenium is 0.05 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43397
Pollutant:	Silver
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Silver.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A for silver is 0.1 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43431
Pollutant:	Selenium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Selenium.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 5 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43492
Pollutant:	Zinc
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Zinc.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for zinc is 459 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43493
Pollutant:	Zinc
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Zinc.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for zinc is 459 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43639
Pollutant:	Copper
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for copper is 149 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43640
Pollutant:	Copper
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for copper is 149 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43647
Pollutant:	Mercury
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Mercury.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for mercury is 1.06 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43648
Pollutant:	Mercury
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Mercury.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for mercury is 1.06 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43675
Pollutant:	Cadmium
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cadmium.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for cadmium is 4.98 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43676
Pollutant:	Cadmium
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cadmium.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for cadmium is 4.98 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43747
Pollutant:	Lead
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Lead.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for lead is 128 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46515
Pollutant:	Arsenic | Cadmium | Copper | Lead | Mercury | Selenium | Silver | Zinc
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	200
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 200 metal samples collected in the mainstem Russian River exceed the objectives. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE contains data originally evaluated in LOE 21544, which included data from a site that is not in this water body. The data from LOE 21544 have been re-assessed and the data are now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): Arsenic objective is 0.05 mg/L. Cadmium objective is 0.01 mg/L. Lead objective is 0.05 mg/L. Mercury objective is 0.002 mg/L. Selenium objective is 0.01 mg/L. Silver objective is 0.05 mg/L. Per 22 CCR 64449: Copper secondary maximum contaminant level is 1.0 mg/L. Zinc secondary maximum contaminant level is 5.0 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale site samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 22453, Multiple Pollutants Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43748
Pollutant:	Lead
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Lead.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for lead is 128 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	31725	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Boron
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess protection of the agricultural supply (AGR) beneficial use. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) Zero of four samples exceed the evaluation guideline used to interpret the narrative objective, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31725, Boron Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34205
Pollutant:	Boron
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Agricultural Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality:	None of the 4 samples analyzed exceeded the evaluation guideline of 0.7 mg/L.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Basin (NCRWQCB 2011): Waters designated for use as agricultural supply (AGR) shall not contain concentrations of chemical constituents in amounts which adversely affect such beneficial use.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Water Quality for Agriculture, published by the Food and Agriculture Organization of the United Nations in 1985, contains criteria protective of various agricultural uses of water, including irrigation of various types of crops and stock watering. At or below the limits presented in the Water Quality Goals tables, agricultural uses of water should not be limited. These criteria were used to translate narrative water quality objectives for chemical constituents that prohibit chemicals in concentrations that would impair agricultural uses of water. The criteria for boron is 700 ug/L (0.7 mg/L).
Guideline Reference:	Water Quality for Agriculture, Food and Agriculture Organization of the United Nations - Irrigation and Drainage Paper No. 29, Rev 1, Rome (1985)
Spatial Representation:	Samples were collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected approximately quarterly from November 2007 to July 2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	24354	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Chloride
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.2 of the Listing Policy. Under Section 3.2, a single line of evidence is necessary to assess listing status. Two lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use. It should be noted that data from LOE 25448 from the 2010 Integrated Report cycle were re-evaluated this current cycle in LOE 46519 in this water body and LOE 46518 in the Guerneville HSA water body. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) Zero of 37 samples from the mainstem Russian River exceed the objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 24354, Chloride Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25448
Pollutant:	Chloride
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	50
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 50 chloride samples collected in the mainstem Russian River exceed the evaluation guideline. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per 22 CCR 64449: The recommended Secondary Maximum Contaminant Level for chloride is 250 mg/L.
Guideline Reference:	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Spatial Representation:	Samples were collected from the mainstem Russian River at 6 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) at Geyserville (SWAMP Station ID 114RRGEYS), (4) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX), and (5) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 24354, Chloride Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33855
Pollutant:	Chloride
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples collected exceeded the evaluation guideline.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Per 22 CCR 64449: The recommended Secondary Maximum Contaminant Level for chloride is 250 mg/L.
Guideline Reference:	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Spatial Representation:	Samples were collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected approximately once per quarter year from November 2007 to July 2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 24354, Chloride Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46519
Pollutant:	Chloride
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	33
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 33 chloride samples collected from the mainstem Russian River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE and LOE 46518 contain data originally evaluated in LOE 25448, which included data from a site that is not in this water body. The data from LOE 25448 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
Evaluation Guideline:	Per 22 CCR 64449: The recommended Secondary Maximum Contaminant Level for chloride is 250 mg/L.
Guideline Reference:	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Spatial Representation:	Samples were collected from the mainstem Russian River at 5 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS) and (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	31329	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Chromium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Three lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use, one line of evidence is available to assess protection of the warm freshwater habitat (WARM) beneficial use, and three lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use. Zero of 56 water samples exceed the MUN water quality objective. Additionally, zero of four water samples exceed the COLD water quality objective and one of one sediment sample exceed both the COLD and WARM objectives (although the sample did not show sediment toxicity), however these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 56 water samples exceed the MUN water quality objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43756
Pollutant:	Chromium
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Chromium.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for chromium is 111 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43755
Pollutant:	Chromium
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Chromium.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for chromium is 111 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41183
Pollutant:	Chromium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Chromium.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for chromium 0.05 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34304
Pollutant:	Chromium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for chromium III or the criteria for chromium VI.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each chromium III sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. The criterion continuous concentration (4-day average) to protect aquatic life in freshwater for chromium VI is 11 ug/L and is not hardness dependent.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR2940 (Russian River at Healdsburg Memorial Beach).
Temporal Representation:	Samples collected between 11/26/07 and 7/14/08.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32086
Pollutant:	Toxicity
LOE Subgroup:	Toxicity
Matrix:	Sediment
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	TOXICITY TESTING
Data Used to Assess Water Quality:	One sample was collected to evaluate sediment toxicity. Growth and/or survival of Hyalella azteca was examined between the sediment field sample and a sediment control, utilizing a 10-day toxicity test. The sample did not exhibit significant toxicity.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Water Board.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold.
Guideline Reference:	Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064
Spatial Representation:	The sample was collected at station 114RRAXRV, Russian River at Alexander RV Park.
Temporal Representation:	The sample was collected in October 14, 2008.
Environmental Conditions:
QAPP Information:	All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46872
Pollutant:	Chromium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	27
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 27 samples exceeded the chromium objective. This LOE contains data originally evaluated in LOE 21544 from the 2010 Integrated Report, which included data from a site that is not in this water body. The data from LOE 21544 have been re-assessed and the data are now evaluated under the correct water body. Data were also reassessed in order to evaluate nickel and chromium data in their own individual LOEs.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for chromium 0.05 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale site samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 31329, Chromium Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46868
Pollutant:	Chromium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	25
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 25 samples exceeded the chromium objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE contains data originally evaluated in LOE 21544, which included data from a site that is not in this water body. The data from LOE 21544 have been re-assessed and the data are now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for chromium 0.05 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale site samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	31408	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	DDD (Dichlorodiphenyldichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess protection of the cold freshwater habitat (COLD) beneficial use and one line of evidence is available to assess protection of the municipal and domestic supply (MUN) beneficial use. Per the Listing Policy, data from LOE 34608 evaluating the MUN beneficial use could not be used in this decision as the method detection limit for the non-detect samples was greater than the criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of one sediment sample exceeds the COLD evaluation guideline, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31408, DDD (Dichlorodiphenyldichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34608
Pollutant:	DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The method detection limit for all 3 of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The 4,4'-DDD criterion for the protection of human health from the consumption of water and organisms is 0.00031 ug/L (USEPA Nationally Recommended Criteria, 2006).
Objective/Criterion Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples were collected on 11/26/2007, 4/7/2008, and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31408, DDD (Dichlorodiphenyldichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33536
Pollutant:	DDD (Dichlorodiphenyldichloroethane)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 1 sample collected for sum DDD (DDD(o,p') + DDD(p,p')) exceeded the evaluation guideline.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDD is 28.0 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data were collected at the following station 114RRAXRV (Russian River at Alexander RV Park).
Temporal Representation:	The samples were collected on 10/14/2008.
Environmental Conditions:
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	31409	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	DDE (Dichlorodiphenyldichloroethylene)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess protection of the cold freshwater habitat (COLD) beneficial use and one line of evidence is available to assess protection of the municipal and domestic supply (MUN) beneficial use. Per the Listing Policy, data from LOE 34609 evaluating the MUN beneficial use could not be used in this decision as the method detection limit for the non-detect samples was greater than the criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of one sediment sample exceeds the COLD evaluation guideline, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31409, DDE (Dichlorodiphenyldichloroethylene) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34609
Pollutant:	DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The method detection limit for all 3 of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The 4,4'-DDE criterion for the protection of human health from the consumption of water and organisms is 0.00022 ug/L (USEPA Nationally Recommended Criteria, 2006).
Objective/Criterion Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples were collected on 11/26/2007, 4/7/2008, and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31409, DDE (Dichlorodiphenyldichloroethylene) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33568
Pollutant:	DDE (Dichlorodiphenyldichloroethylene)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 1 sample collected for sum DDE (DDE(o,p') + DDE(p,p')) exceeded the evaluation guideline.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDE is 31.3 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data were collected at the following station 114RRAXRV (Russian River at Alexander RV Park).
Temporal Representation:	The samples were collected on 10/14/2008.
Environmental Conditions:
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	25171	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Two lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use and three lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use. It should be noted that data from LOE 25639 from the 2010 Integrated Report were re-assessed in LOEs 46527 and 46526 as the original 2010 LOE included data for a site that was not in this water body. Additionally, per the Listing Policy, data from LOE 34607 evaluating the MUN beneficial use could not be used in this decision as the method detection limit for the non-detect samples was greater than the criteria. The pollutant name for this decision was changed from “Pesticides” to “DDT” in order to assess data for the pollutants originally evaluated under the name Pesticides (DDT, DIsulfoton, and Hexachlorobenzene/ HCB) in their own individual decisions. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of three water samples and zero of one sediment sample for both sum DDT and total DDT exceed their respective COLD criteria. One of one water sample exceeds the MUN criteria. These sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 25171, DDT (Dichlorodiphenyltrichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34606
Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 3 samples exceeded the criterion continuous concentration for 4,4' DDT. The water body was assessed for the sum of DDT(o,p') and DDT(p,p').
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The 4,4' DDT criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.001 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007, 4/7/2008, and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25171, DDT (Dichlorodiphenyltrichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33590
Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 1 sample collected for sum DDT (DDT(o,p') + DDT (p,p')) exceeded the evaluation guideline.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDT is 62.9 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data were collected at the following station 114RRAXRV (Russian River at Alexander RV Park).
Temporal Representation:	The samples were collected on 10/14/2008.
Environmental Conditions:
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25171, DDT (Dichlorodiphenyltrichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33539
Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 1 sample collected for Total DDTs (sum DDD + sum DDE + sum DDT) exceeded the evaluation guideline.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for total DDTs is 572 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data were collected at the following station 114RRAXRV (Russian River at Alexander RV Park).
Temporal Representation:	The samples were collected on 10/14/2008.
Environmental Conditions:
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25171, DDT (Dichlorodiphenyltrichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25639
Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One DDT sample collected in the Geyserville HSA had a detectable level of DDT and the sample exceeds the evaluation guideline. The sample concentration was reported as detected not quantifiable (DNQ), with estimated value of .004 ug/l (method detection limit of 0.0025 ug/l, reporting limit of .005 ug/l). There were also an additional 42 samples from the Geyserville HSA , which were non-detect. However, these non-detect data could not be utilized in this assessment because the detection limit for DDT is above the evaluation guideline. Per the listing policy, when a sample value is less than the quantitation limit, and the quantitation limit is greater than the evaluation guideline, the result shall not be used in the analysis. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP) (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). DDT, DDE, and DDD data from SWAMP Sampling for Years 2001-2006. North Coast Regional Water Quality Control Board.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The recommended criterion for DDT for the protection of source waters for human health consumption of water and organisms is 0.00022 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or runs.
Temporal Representation:	At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 19 site visits at each site from February 2002 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 25171, DDT (Dichlorodiphenyltrichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34607
Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The method detection limit for all 3 of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The 4,4' DDT criterion for the protection of human health from the consumption of water and organisms is 0.00022 ug/L (USEPA Nationally Recommended Criteria, 2006).
Objective/Criterion Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples were collected on 11/26/2007, 4/7/2008, and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25171, DDT (Dichlorodiphenyltrichloroethane) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46527
Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One DDT sample collected in the Geyserville HSA at site RRCLO1 had a detectable level of DDT and the sample exceeds the evaluation guideline. The sample concentration was reported as detected not quantifiable (DNQ), with estimated value of .004 ug/l (method detection limit of 0.0025 ug/l, reporting limit of .005 ug/l). The other samples from the Geyserville HSA were all non-detect. These non-detect data could not be utilized in this assessment because the detection limit for DDT is above the evaluation guideline. Per the listing policy, when a sample value is less than the quantitation limit, and the quantitation limit is greater than the evaluation guideline, the result shall not be used in the analysis. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP) (NCRWQCB 2008). This LOE and LOE 46526 contain data originally evaluated in LOE 25639, which included data from a site that is not in this water body. The data from LOE 25639 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). DDT, DDE, and DDD data from SWAMP Sampling for Years 2001-2006. North Coast Regional Water Quality Control Board.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan.
Objective/Criterion Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The recommended criterion for DDT for the protection of source waters for human health consumption of water and organisms is 0.00022 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or runs.
Temporal Representation:	At the Cloverdale site, samples were collected over 19 site visits from February 2002 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	31410	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Disulfoton
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess protection of the municipal and domestic supply (MUN) beneficial use. Data from one additional MUN LOE (25638) from the 2010 Integrated Report were re-assessed in LOEs 46525 and 46524. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 26 samples exceed the criteria and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31410, Disulfoton Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25638
Pollutant:	Disulfoton
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	41
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 41 disulfoton samples collected in the mainstem Russian River exceeds the evaluation guideline. Sample concentrations range from non-detect (with a reporting limit of 0.050 ug/l) to detected but not quantified with a concentration of at least 0.050 ug/l. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per "Water Quality Criteria 1972" (USEPA 1973): The instantaneous maximum water quality criterion for disulfoton for the protection of freshwater aquatic life is 0.05 ug/l.
Guideline Reference:	National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 31410, Disulfoton Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46525
Pollutant:	Disulfoton
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	26
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 26 disulfoton samples collected in the mainstem Russian River exceeds the evaluation guideline as all of the samples were either measured as non-detect or were measured as detected but not quantified. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008). This LOE and LOE 26524 contain data originally evaluated in LOE 25638, which included data from a site that is not in this water body. The data from LOE 25638 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan.
Objective/Criterion Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
Evaluation Guideline:	Per "Water Quality Criteria 1972" (USEPA 1973): The instantaneous maximum water quality criterion for disulfoton for the protection of freshwater aquatic life is 0.05 ug/l.
Guideline Reference:	National Academy of Sciences. Water Quality Criteria 1972. EPA-R3-73-033. Washington, D.C.: U.S. Environmental Protection Agency
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Alexandar Valley (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 19 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	31407	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Hexachlorobenzene/ HCB
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Two lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use and one line of evidence is available to assess protection of the commercial and sport fishing (COMM) beneficial use. It should be noted that data from LOE 25640 from the 2010 Integrated Report were re-assessed in LOEs 46600 and 46601 during the current listing cycle in order to (1) assess the data in the correct water body and (2) reflect that, per the Listing Policy, non-detect and detect not quantified (DNQ) data could not be used in this assessment. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) The data in LOE 42242 evaluating the COMM beneficial use, and LOEs 42216 and 46600 evaluating the MUN beneficial use were all non-detect or DNQ and the method detection limit was above the criteria. Thus, per the Listing Policy the data were not used in this assessment. Therefore, there are no data available to assess against protection of the MUN or COMM beneficial uses. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31407, Hexachlorobenzene/ HCB Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42216
Pollutant:	Hexachlorobenzene/ HCB
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for hexachlorobenzene to protect of human health from the consumption of water and organisms is 0.00075 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31407, Hexachlorobenzene/ HCB Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25640
Pollutant:	Hexachlorobenzene/ HCB
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	39
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 39 hexachlorobenzene samples collected in the mainstem Russian River exceeds the evaluation guideline. Sample concentrations range from non-detect (with a reporting limit of 0.001 ug/l) to detected but not quantified with a concentration of at least 0.001 ug/l. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The recommended criterion for hexachlorobenzene for the protection of source waters for human health consumption of water and organisms is 0.00028 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 31407, Hexachlorobenzene/ HCB Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46600
Pollutant:	Hexachlorobenzene/ HCB
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	All 26 of the non-detect and detect not quantified (DNQ) sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008). This LOE and LOE 46601 contain data originally evaluated in LOE 25640, which included data from a site that is not in this water body. The data from LOE 25640 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. Waters designated for use as domestic or municipal supply shall not contain concentrations of pesticides in excess of the limiting concentrations set forth in California Code of Regulations, Title 22, Division 4, Chapter 15, Article 4, Section 64444, and listed in Table 3.2 of the Basin Plan.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The recommended criterion for hexachlorobenzene for the protection of source waters for human health consumption of water and organisms is 0.00028 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Samples were collected from the mainstem Russian River at 3 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Alexandar Valley (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Alexander Valley Bridge site, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 19 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 31407, Hexachlorobenzene/ HCB Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42242
Pollutant:	Hexachlorobenzene/ HCB
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three non-detect sample results were not used in the assessment because the laboratory data reporting limit was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for hexachlorobenzene to protect human health from consumption of organisms only is 0.00077 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	31726	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Manganese
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess protection of the municipal and domestic supply (MUN) beneficial use. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) Zero of four samples exceed the objective, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31726, Manganese Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42629
Pollutant:	Manganese
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Manganese.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A for Manganese is 0.05 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	31330	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Nickel
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Three lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use, one line of evidence is available to assess protection of the warm freshwater habitat (WARM) beneficial use, three lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use, and one line of evidence is available to assess protection of the commercial and sport fishing (COMM) beneficial use. Zero of 56 water samples exceed the MUN water quality objective. Additionally, zero of four water samples exceed both the COLD and COMM water quality objectives, and one of one sediment sample exceed both the COLD and WARM objectives (however the sample did not reflect sediment toxicity), however these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 56 water samples exceed the MUN water quality objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46873
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	27
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 27 samples exceeded the nickel objective. This LOE contains data originally evaluated in LOE 21544 from the 2010 Integrated Report, which included data from a site that is not in this water body. The data from LOE 21544 have been re-assessed and the data are now evaluated under the correct water body. Data were also reassessed in order to evaluate nickel and chromium data in their own individual LOEs.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for nickel is 0.1 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale site samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32086
Pollutant:	Toxicity
LOE Subgroup:	Toxicity
Matrix:	Sediment
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	TOXICITY TESTING
Data Used to Assess Water Quality:	One sample was collected to evaluate sediment toxicity. Growth and/or survival of Hyalella azteca was examined between the sediment field sample and a sediment control, utilizing a 10-day toxicity test. The sample did not exhibit significant toxicity.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Water Board.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold.
Guideline Reference:	Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064
Spatial Representation:	The sample was collected at station 114RRAXRV, Russian River at Alexander RV Park.
Temporal Representation:	The sample was collected in October 14, 2008.
Environmental Conditions:
QAPP Information:	All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33101
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the hardness based criteria calculated for nickel.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42986
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Nickel.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for nickel is 0.1 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43026
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Commercial or recreational collection of fish, shellfish, or organisms
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Nickel.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The established numeric criteria for Nickel to protect human health from consumption of organisms only is 4.6 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43711
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Nickel.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for nickel is 48.6 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43712
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Nickel.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for nickel is 48.6 mg/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV ]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31330, Nickel Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46869
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	25
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 25 samples exceeded the nickel objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE contains data originally evaluated in LOE 21544, which included data from a site that is not in this water body. The data from LOE 21544 have been re-assessed and the data are now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for nickel is 0.1 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale site samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	27055	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Nitrate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 19 samples from the mainstem Russian River exceed the objective. Zero of 2 samples from Foss Creek exceed the objective, however this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 19 samples from the mainstem Russian River exceed the objective, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 27055, Nitrate Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32894
Pollutant:	Nitrate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	19
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 19 samples exceed the water quality objective for nitrate. The nitrate MCL objective is 10 mg/L as N.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (2011): Waters designated for MUN shall not contain concentrations of chemical constituents in excess of the MCL specified in Title 22 of the California Code of Regulations. The nitrate (as N) MCL is 10 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Russian River at Alexander Valley Campground
Temporal Representation:	Samples were collected from 05/28/2009 to 10/01/2009.
Environmental Conditions:
QAPP Information:	No quality assurance information was provided.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 27055, Nitrate Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	47485
Pollutant:	Nitrate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2 nitrate samples collected from Foss Creek exceed the evaluation guideline. The sample concentrations range from 0.7 to 0.8 mg/l. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003). This LOE replaces LOE 6213 from the 2010 Integrated Report cycle. The original LOE was replace in order to update the Nitrate objective to the MCL of 10 mg/L.
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (2011): Waters designated for MUN shall not contain concentrations of chemical constituents in excess of the MCL specified in Title 22 of the California Code of Regulations. The nitrate (as N) MCL is 10 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board

DECISION ID	32012	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Nitrate/Nitrite (Nitrite + Nitrate as N)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant in the mainstem Russian River (LOE 43074). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of four samples from the mainstem Russian River exceed the water quality objective, however this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 32012, Nitrate/Nitrite (Nitrite + Nitrate as N) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43074
Pollutant:	Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Nitrate/Nitrite as N.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for nitrate+nitrite (sum as nitrogen) is 10.0 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	32056	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Nitrite
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant in the mainstem Russian River (LOE 42806). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of four samples from the mainstem Russian River exceed the water quality objective, however this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 32056, Nitrite Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42806
Pollutant:	Nitrite
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Nitrite as N.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The maximum contaminant level listed in Table 64431-A for Nitrite as N is 1.0 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	25557	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Nitrogen, ammonia (Total Ammonia)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess the Cold Freshwater Habitat (COLD) beneficial use in Foss Creek (LOE 6211), one line of evidence is available to assess the COLD beneficial use in the mainstem Russian River (LOE 46603), and two lines of evidence are available to assess the Spawning, Reproduction, and/or Early Development (SPWN) beneficial use in the mainstem Russian River. It should be noted that data from an additional LOE (26333) from the 2010 Integrated Report were re-assessed in LOE 46603. Additionally, the pollutant name was changed from "Ammonia as Nitrogen" to "Nitrogen, ammonia (Total Ammonia)". Zero of 33 samples from the mainstem Russian River exceed the COLD evaluation guideline. Additionally, zero of 2 samples from Foss Creek exceed the COLD evaluation guideline and zero of 4 samples from the mainstem Russian River exceed the SPWN evaluation guideline; however, these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1 Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of 33 samples from the mainstem Russian River exceed the COLD evaluation guideline and this does not exceed the allowable frequency in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 25557, Nitrogen, ammonia (Total Ammonia) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	26333
Pollutant:	Ammonia as Nitrogen
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Aquatic Life Use:	Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat
Number of Samples:	55
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 55 ammonia as nitrogen samples collected from the mainstem Russian River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The 1-hour average concentration (acute criterion or CMC) of total ammonia nitrogen (in mg N/L) for freshwater where salmonid fish are present, which is not to be exceeded more than once every three years on average, is calculated using the following equation: CMC=0.275/(1+10^(7.204 - pH)) + 39.0/(1+10^(pH - 7.204)).
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Samples were collected from the mainstem Russian River at 6 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS), (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX), and (6) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (Puckett 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 25557, Nitrogen, ammonia (Total Ammonia) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6211
Pollutant:	Ammonia as Nitrogen
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Aquatic Life Use:	Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2 total ammonia as nitrogen instantaneous grab samples collected from Foss Creek exceed the evaluation guideline. The sample concentrations range from 0.46 to 1.30 mg/l. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003).
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): "Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses."
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The 1-hour average concentration (acute criterion or CMC) of total ammonia nitrogen (in mg N/L) for freshwater where salmonid fish are present, which is not to be exceeded more than once every three years on average, is calculated using the following equation: CMC=0.275/(1+10^(7.204 - pH)) + 39.0/(1+10^(pH - 7.204)).
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
Line of Evidence (LOE) for Decision ID 25557, Nitrogen, ammonia (Total Ammonia) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34005
Pollutant:	Nitrogen, ammonia (Total Ammonia)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	pH values were not reported for this site. Therefore, staff was unable to use the USEPA Temperature and pH-Dependent values of the CCC (Chronic Criterion) for Fish Early Life Stages Present for ammonia.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Update of Ambient Water Quality Criteria for Ammonia (USEPA 1999): Where salmonids and fish early life stages are present, the 30-day average concentration (criterion continuous concentration or CCC) of total ammonia (as mg N/L) in freshwater are not to be exceeded more than once every three years on average. The CCC values are based on pH, temperature, and the presence of early life stages of fish. The CCC formula is found on p.83 and the table of CCC values are found on p.87.
Guideline Reference:	1999 Update of Ambient Water Quality Criteria for Ammonia
Spatial Representation:	Samples was collected at Russian River at Alexander Valley Campground.
Temporal Representation:	Samples were collected from 5/28/2009 to 10/1/2009.
Environmental Conditions:
QAPP Information:	No quality assurance information was provided.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 25557, Nitrogen, ammonia (Total Ammonia) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46603
Pollutant:	Ammonia as Nitrogen
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	33
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 33 ammonia as nitrogen samples collected from the mainstem Russian River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE and LOE 46602 contain data originally evaluated in LOE 26333 from the 2010 Integrated Report cycle, which included data from a site that is not in this water body. The data from LOE 26333 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The 1-hour average concentration (acute criterion or CMC) of total ammonia nitrogen (in mg N/L) for freshwater where salmonid fish are present, which is not to be exceeded more than once every three years on average, is calculated using the following equation: CMC=0.275/(1+10^(7.204 - pH)) + 39.0/(1+10^(pH - 7.204)).
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Samples were collected from the mainstem Russian River at 5 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS) and (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 25557, Nitrogen, ammonia (Total Ammonia) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34577
Pollutant:	Nitrogen, ammonia (Total Ammonia)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the samples exceed the water USEPA Temperature and pH-Dependent values of the CCC (Chronic Criterion) for Fish Early Life Stages Present for ammonia. 1 of the 4 data is reported as a non-detect limit. This non-detect limit is less than or equal to the water quality standard, the value will be considered as meeting the water quality standard, objective, criterion, or evaluation guideline.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Update of Ambient Water Quality Criteria for Ammonia (USEPA 1999): Where salmonids and fish early life stages are present, the 30-day average concentration (criterion continuous concentration or CCC) of total ammonia (as mg N/L) in freshwater are not to be exceeded more than once every three years on average. The CCC values are based on pH, temperature, and the presence of early life stages of fish. The CCC formula is found on p.83 and the table of CCC values are found on p.87.
Guideline Reference:	1999 Update of Ambient Water Quality Criteria for Ammonia
Spatial Representation:	Sample was collected at 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected between 11/26/2007 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	31636	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Oxygen, Dissolved
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under this section of the policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Additionally, LOE 34132 from the current Integrated Report cycle was not used in this decision as the data are provisional and have not gone through any quality assurance check Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of four samples from the mainstem Russian River exceed the objective, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 26 samples, or (B) greater than or equal to 5 exceedances of the objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31636, Oxygen, Dissolved Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	32637
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	18
Number of Exceedances:	6
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Six of the 18 samples had a DO concentration below 7 mg/L.
Data Reference:	Data for Bacteria and Nutrient in Sonoma County Water Agency, 2009-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The minimum dissolved oxygen objective is 7.0 mg/L. The 90% lower limit dissolved oxygen objective is 7.5 mg/L. The 50% lower limit dissolved oxygen objective is 10.0 mg/L. The 90% and 50% lower limits represent the 90/50 percentile values for a calendar year. 90% or 50% or more of the values must be greater than or equal to the lower limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at three different locations: Cloverdale River Park (Russian River at Cloverdale River Park Geyserville Bridge), Russian River at Highway 128, and Russian River at Alexander Valley Campground.
Temporal Representation:	Samples collected between 5/28/2009 and 10/1/2009.
Environmental Conditions:
QAPP Information:	Per the Sonoma County Water Agency (SCWA) the data are provisional and may contain inaccuracies as they have not gone through QA procedures.
QAPP Information Reference(s):	Quality Assurance Project Plan for Region One for Bacteriological Sampling.
Line of Evidence (LOE) for Decision ID 31636, Oxygen, Dissolved Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34132
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples collected exceeded the objective.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The site specific objective for the mainstem Russian River above the Laguna de Santa Rosa is a minimum value of 7.0 mg/L. In addition, the 90% lower limit for this pollutant is 7.5 mg/L. Therefore, 90% of the values in a calendar year must be lower than this limit. Lastly, the site specific objective of 50% lower limit of 10 mg/L which represents the 50 percentile values of the monthly means for a calendar year applies to this water body. Therefore, 50% or more of the monthly means in a calendar year must be less than or equal to an upper limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected approximately once per quarter year from November 2007 to July 2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	24970	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	PCBs (Polychlorinated biphenyls)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Two lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use and two lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use. Data from LOE 25473 from the 2010 Integrated Report were re-assessed in LOEs 46521 and 46520 in order to assess the data under the correct water body and to reflect that the data could not be utilized because the method detection limit for the non-detect and detect not quantified (DNQ) samples were greater than the objective. Per the Listing Policy, data from LOEs 33363 and 46521 could not be used in this decision as the method detection limit for the non-detect and DNQ samples was greater than the objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of two water samples and zero of one sediment sample exceed the COLD objective, and these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 24970, PCBs (Polychlorinated biphenyls) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33340
Pollutant:	PCBs (Polychlorinated biphenyls)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2 samples exceeded the criterion continuous concentration for total PCB. The water body was assessed for the 3 aroclors that were contained within the data set and they include aroclor 1248, aroclor 1254, and aroclor 1260.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The total PCB criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.014 ug/L. This value corresponds to the sum of aroclors 1242, 1254, 1221, 1232, 1248, 1260, and 1016 (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples collected on 4/7/2008 and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 24970, PCBs (Polychlorinated biphenyls) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33228
Pollutant:	PCBs (Polychlorinated biphenyls)
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of 1 sample collected for Total PCBs exceeded the evaluation guideline.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Waters shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses(NCRWQCB 2007).
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for total PCB is 676 ug/Kg dry weight (MacDonald et al. 2000).
Guideline Reference:	Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31
Spatial Representation:	Data were collected at the following station 114RRAXRV (Russian River at Alexander RV Park).
Temporal Representation:	The samples were collected on 10/14/2008.
Environmental Conditions:
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 24970, PCBs (Polychlorinated biphenyls) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33363
Pollutant:	PCBs (Polychlorinated biphenyls)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The method detection limit for all 3 of the non-detect samples was greater than the criteria: thus the data was not used in this assessment.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. The total PCB criterion for the protection of human health from the consumption of water and organisms is 0.00017 ug/L. This value corresponds to total PCBs, eg., the sum of all congener or isomer or homolog or aroclor analyses (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected at station 114RR5652 (Russian River at Crocker Road).
Temporal Representation:	Samples were collected on 11/26/2007, 4/7/2008, and 7/14/2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 24970, PCBs (Polychlorinated biphenyls) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46521
Pollutant:	PCBs (Polychlorinated biphenyls)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The method detection limit for all 24 of the samples was greater than the criteria: thus the data was not used in this assessment. All of the 24 samples were either measured as non-detect or were measured as detected but not quantified with reporting limits below objectives or evaluation guidelines. Each of the 24 samples were analyzed for 50 PCB cogeners. The samples were collected as part of the Surface Water Ambient Water Monitoring Program. This LOE and LOE 46520 contain data originally evaluated in LOE 25473, which included data from a site that is not in this water body. The data from LOE 25473 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007, p. 3-4.00): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
Evaluation Guideline:	Per the "Public Health Goal for Water Soluble Polychlorinated Biphenyls Expected to Found in Drinking Water" (OEHHA 2007): The health-protective concentration of water-soluble PCBs in drinking water associated with a one in one million extra lifetime cancer risk is 0.09 ug/L.
Guideline Reference:	Public Health Goal for Water Soluble Polychlorinated Biphenyls Expected to Be Found in Drinking Water. Pesticide and Environmental Toxicology Branch, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency
Spatial Representation:	Samples were collected from the mainstem Russian River at 2 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1) and (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 24970, PCBs (Polychlorinated biphenyls) Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25473
Pollutant:	PCBs (Polychlorinated biphenyls)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2150
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 2,150 polychlorinated biphenyl (PCB) analytes collected in the mainstem Russian River exceed the evaluation guideline. Each of the 43 samples were analyzed for 50 PCB cogeners. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007, p. 3-4.00): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the "Public Health Goal for Water Soluble Polychlorinated Biphenyls Expected to Found in Drinking Water" (OEHHA 2007): The health-protective concentration of water-soluble PCBs in drinking water associated with a one in one million extra lifetime cancer risk is 0.09 ug/L.
Guideline Reference:	Public Health Goal for Water Soluble Polychlorinated Biphenyls Expected to Be Found in Drinking Water. Pesticide and Environmental Toxicology Branch, Office of Environmental Health Hazard Assessment, California Environmental Protection Agency
Spatial Representation:	Samples were collected from the mainstem Russian River at 6 locations as follows: (1) at Cloverdale (SWAMP Station ID 114RRCLO1), (2) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), and (3) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)

DECISION ID	31411	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Phenol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. One line of evidence is available to assess protection of the cold freshwater habitat (COLD) beneficial use and one line of evidence is available to assess the warm freshwater habitat (WARM) beneficial use. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of three water samples exceed the criteria used to assess both the COLD and WARM beneficial uses, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 16 samples, or (B) greater than or equal 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31411, Phenol Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43058
Pollutant:	Nonylphenol
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Nonylphenol.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	National Recommended Water Quality Criteria Continuous Concentrations (4-day average concentrations) for freshwater aquatic organisms exposure to nonylphenol is 6.6 ug/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 31411, Phenol Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	42998
Pollutant:	Nonylphenol
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Nonylphenol.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	National Recommended Water Quality Criteria Continuous Concentrations (4-day average concentrations) for freshwater aquatic organisms exposure to nonylphenol is 6.6 ug/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	18400	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Phosphorus
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant (LOEs 6212 and 46511). It should be noted that a third LOE from the 2006 Integrated Report cycle (LOE 1744) was not used in this decsions as the data were re-evaluated in LOEs 46511 in this water body and 46510 in Guerneville HSA. It is unknown if any of the phosphorus samples exceed the water quality objective as there is insufficient information available to determine exceedance. Specifically, the samples cannot be compared to the objective because diel samples for dissolved oxygen (DO), pH, and/or chlorophyll-a are not available. Nutrients such as phosphorus do not impair beneficial uses by themselves, or cause non-attainment of the objective. Rather, they cause indirect impacts through algal growth and extreme diel patterns for DO and pH, which then impair uses. Waterbody-specific factors such as riparian cover, flow conditions, and stream channel configuration also affect how nutrients are processed within the stream and play a large role in determining whether or not nuisance algal conditions will prevail. For these reasons, comparing a single nutrient value to the biostimulatory objective is not recommended. Instead, nutrient-related indicator parameters, such as diel measurements of DO, pH, and/or chlorophyll-a, should be evaluated to determine attainment of the objective and protection of beneficial uses. When nutrient-related indicator parameters exceed targets, nutrient concentrations will then be analyzed to determine whether phosphorus should be added to a possible listing under the 303(d) List. Therefore, the weight of evidence indicates that there is insufficient information available to determine if it is appropriate to place this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category. This conclusion is also based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. Note: Lines of evidence for both orthophosphate and total dissolved phosphorus data support this Decision. Total dissolved phosphorus includes orthophosphate. Phosphorus is used as the pollutant for this Decision because it includes both fractions and is easier to understand its relationship to other nutrients and the water quality objective.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 18400, Phosphorus Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46511
Pollutant:	Phosphate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	7
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Orthophosphate values for the 7 samples from the two sites ranged from non-detectable to 0.163 mg/L (Sandler, 2004). This LOE and LOE 46510 contain data originally evaluated in LOE 1744, which included data from a site that is not in this water body. The data from LOE 1744 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	303(d) list solicitation submittal data. 2004. Occidental, CA: Community Clean Water Institute
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The Basin Plan does not have a water quality objective for orthophosphate.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:	There is no appropriate interpretive evaluation guideline for orthophosphate.
Guideline Reference:	Placeholder reference 2006 303(d)
Spatial Representation:	Sampling was limited to two locations along the Russian River at Cloverdale. Sample site RUS080 is located at the Cloverdale 1st St. bridge, Cloverdale. Sample site RUS090 is located at the Cloverdale River Park, Cloverdale.
Temporal Representation:	RUS080 was sampled once in April, once in May, once in July, and once in August 2003. RUS090 was sampled once in May, once in July and once in August 2003.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Draft QAPP for Volunteer Water Quality Monitoring Project for the Community Clean Water Institute
QAPP Information Reference(s):	303(d) list solicitation submittal data. 2004. Occidental, CA: Community Clean Water Institute
Line of Evidence (LOE) for Decision ID 18400, Phosphorus Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6212
Pollutant:	Phosphorus
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Aquatic Life Use:	Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	It is unknown whether any of the 2 phosphorus samples collected in Foss Creek exceed the objective as there is insufficient information available to determine exceedance. Specifically, the samples cannot be compared to the objective because diel samples for dissolved oxygen (DO), pH, and/or chlorophyll-a are not available. Nutrients, such as phosphorus, alone do not impair beneficial uses or cause non-attainment of the objective. Rather, they cause indirect impacts through algal growth and extreme diel patterns for DO and pH, which then impair uses. Waterbody-specific factors such as riparian cover, flow conditions, and stream channel configuration also affect how nutrients are processed within the stream and play a large role in determining whether or not nuisance algal conditions will prevail. For these reasons, comparing a single nutrient value to the biostimulatory objective is not recommended. Instead, nutrient-related indicator parameters, such as diel measurements of DO, pH, and/or chlorophyll-a, should be evaluated to determine attainment of the objective and protection of beneficial uses. When nutrient-related indicator parameters exceed targets, nutrient concentrations will then be analyzed to determine whether phosphorus should be added to a possible listing under the 303(d) List. The samples ranged from 0.32 to 0.62 mg/l. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003).
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance, or that otherwise adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
Line of Evidence (LOE) for Decision ID 18400, Phosphorus Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	1744
Pollutant:	Phosphate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	8
Number of Exceedances:
Data and Information Type:	Not Specified
Data Used to Assess Water Quality:	Of the total 8 samples from the three sites values ranged from non-detectable to 0.163 mg/L (Sandler, 2004).
Data Reference:	Placeholder reference 2006 303(d)
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The Basin Plan does not have a water quality objective for orthophosphate.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:	There is no appropriate interpretive evaluation guideline for orthophosphate.
Guideline Reference:	Placeholder reference 2006 303(d)
Spatial Representation:	Sampling was limited to three locations along the Russian River, one at Healdsburg, and two at Cloverdale. Sample site RUS070 is located at the Healdsburg Veteran's beach, Healdsburg. Sample site RUS080 is located at the Cloverdale 1st St. bridge, Cloverdale. Sample site RUS090 is located at the Cloverdale River Park, Cloverdale.
Temporal Representation:	RUS070 was sampled once in April 2003. RUS080 was sampled once a month April through August 2003. RUS090 was sampled once in May, once in July and once in August 2003.
Environmental Conditions:
QAPP Information:	Draft QAPP for Volunteer Water Quality Monitoring Project for the Community Clean Water Institute.
QAPP Information Reference(s):

DECISION ID	22542	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Specific Conductivity
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under this section of the policy, a minimum of one line of evidence is needed to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. It should be noted that data from two additional LOEs from the 2010 Integrated Report are re-assessed in new LOEs this Integrated Report cycle, as follows: (1) data from LOE 6209 is re-assessed in LOE 46816; and (2) data from LOE 21323 are re-assessed in LOE 46513. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the Section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Zero of two samples from Foss Creek (LOE 46816) and three of fourteen samples from the mainstem Russian River (LOEs 34439 and 46513) exceed the objective, however these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 26 samples, or (B) greater than or equal 5 exceedances of the MUN objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 22542, Specific Conductivity Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46513
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	12
Number of Exceedances:	3
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Three of the calendar years data for sites on the mainstem Russian River exceeded the specific conductivity objective. The number of samples and exceedances for each site are as follows: (1) 0 of 2 exceedances for the 2 years calendar years of data for the Cominski Station site; (2) 1 of 6 exceedances for the 6 years of data from the Crocker Road site; (3) 1 of 2 exceedances for the 2 years of data from the site downstream of the Cloverdale Wastewater treatment plant; (4) 0 of 1 exceedances for the one year of data from the Highway 128 site; and (5) 1 of 1 exceedance from the one year of data from the Alexander Valley Bridge site. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE and LOE 46512 contain data originally evaluated in LOE 21323, which included data from a site that is not in this water body and incorrectly assessed each individual sample against the objective, instead of evaluating the calendar years worth of data for each site against the objective as is appropriate. The data from LOE 21323 have been split into two LOEs, with data now evaluated under the correct water body and on a calendar year basis.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The 90% upper limit specific conductance objective at 77 F is 320 micromhos (or mS/cm2). The 50% upper limit specific conductance objective at 77 F is 250 micromhos (or mS/cm2). The 90% and 50% upper limits represent the 90/50 percentile values for a calendar year. 90% or 50% or more of the values must be less than or equal to the upper limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 5 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Crocker Road in Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Highway 128 in Geyserville (SWAMP Station ID 114RRGEYS) and (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Crocker Road, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Highway 128 site samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 22542, Specific Conductivity Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46816
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the 2 specific conductivity samples collected in Foss Creek exceeds the specific conductivity water quality objective. The sample concentrations range from 147 to 270 uS. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003). This LOE re-assesses data from LOE 6209 from the 2010 Integrated Report cycle, which incorrectly compared the data against the site-specific specific conductivity objective for the mainstem Russian River. The data are now compared to the secondary MCL as is appropriate.
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Chapter 15. The secondary maximum contaminant level listed in Table 64449-A for Specific Conductance is 900 uS/cm.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
Line of Evidence (LOE) for Decision ID 22542, Specific Conductivity Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34439
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the 2 calendar years of data exceeded the objective.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The site specific objective for the Russian River upstream of the Laguna de Santa Rosa is a 90% upper limit of 320 uS. Therefore, 90% of the values in a calendar year must be lower than this limit. In addition the site specific objective of 50% upper limit of 250 uS which represents the 50 percentile values of the monthly means for a calendar year applies to this water body. Therefore, 50% or more of the monthly means in a calendar year must be less than or equal to an upper limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected on the following dates: 11/26/2007 3/3/2008 4/7/2008 7/14/2008
Environmental Conditions:
QAPP Information:	SWAMP QAPP (2008).
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 22542, Specific Conductivity Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	21323
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	55
Number of Exceedances:	8
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Eight of the 55 specific conductivity grab samples collected from the mainstem Russian River exceed the objective. Samples met the 90% upper limit objective in all years at all sites, but exceeded the 50% upper limit objective at the following stations in the following years: at Cloverdale in 2006, downstream of the Cloverdale Water Treatment Plan in 2005, at Alexander Valley Bridge in 2001, and at Healdsburg Memorial Beach in 2001, 2002, 2004, 2005, and 2006. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The 90% upper limit specific conductance objective at 77 F is 320 micromhos (or mS/cm2). The 50% upper limit specific conductance objective at 77 F is 250 micromhos (or mS/cm2). The 90% and 50% upper limits represent the 90/50 percentile values for a calendar year. 90% or 50% or more of the values must be less than or equal to the upper limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the mainstem Russian River at 6 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS), (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX), and (6) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (Puckett 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 22542, Specific Conductivity Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6209
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 2 specific conductivity samples collected in Foss Creek exceeds the specific conductivity water quality objective. The sample concentrations range from 147 to 270 uS. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003).
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The 90% upper limit specific conductance objective at 77 F is 320 micromhos (or uS/cm2). The 50% upper limit specific conductance objective at 77 F is 250 micromhos (or uS/cm2). The 90% and 50% upper limits represent the 90/50 percentile values of the monthly means for a calendar year. 90% or 50% or more of the values must be less than or equal to the upper limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board

DECISION ID	24398	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Sulfates
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.2 of the Listing Policy. Under Section 3.2, a single line of evidence is necessary to assess listing status. Two lines of evidence are available to assess protection of the municipal and domestic supply (MUN) beneficial use. It should be noted that data from LOE 25557 from the 2010 Integrated Report were re-assessed during the current listing cycle in LOEs 46522 (in this water body) and LOE 46523 (in the Guerneville HSA water body). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category (i.e., sufficient justification to not list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) Zero of 37 samples from the mainstem Russian River exceed the objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 24398, Sulfates Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	46522
Pollutant:	Sulfates
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	33
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 33 sulfate samples collected from the mainstem Russian River exceed the objective. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the SWAMP Summary Report for the North Coast Region for Years 2000-2006 (NCRWQCB 2008). This LOE and LOE 46523 contain data originally evaluated in LOE 25557, which included data from a site that is not in this water body. The data from LOE 25557 have been split into two LOEs, with data now evaluated under the correct water body.
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007, p. 3-3.00): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
Evaluation Guideline:	Per 22 CCR 64449 (Table 64449-B): The recommended secondary maximum contaminant level for sulfate is 250 mg/L.
Guideline Reference:	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Spatial Representation:	Samples were collected from the mainstem Russian River at 5 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS), and (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale site, samples were collected over 22 site visits from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 24398, Sulfates Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	25557
Pollutant:	Sulfates
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	55
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 55 sulfate samples collected in the mainstem Russian River exceed the evaluation guideline. The samples were collected as part of the Surface Water Ambient Water Monitoring Program (SWAMP). The data are found in the 5-Year Monitoring Report (NCRWQCB 2008).
Data Reference:	Surface Water Ambient Monitoring Program (SWAMP). Summary Report for the North Coast Region (RWQCB-1) for years 2000-2006. North Coast Regional Water Quality Control Board. March 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007, p. 3-3.00): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per 22 CCR 64449 (Table 64449-B): The recommended secondary maximum contaminant level for sulfate is 250 mg/L.
Guideline Reference:	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Spatial Representation:	Samples were collected from the mainstem Russian River at 6 locations as follows: (1) at Comminski Station (SWAMP Station ID 114RRCOMM), (2) at Cloverdale (SWAMP Station ID 114RRCLO1), (3) downstream of the Cloverdale Water Treatment Plant (SWAMP Station ID 114CLOSTP), (4) at Geyserville (SWAMP Station ID 114RRGEYS), (5) at Alexander Valley Bridge (SWAMP Station ID 114RRALEX), and (6) at Healdsburg Memorial Beach (SWAMP Station ID 114RRHMB1). Samples were collected from well-mixed flows in glides or riffles.
Temporal Representation:	At the Comminski Station, Geyserville, and Alexander Valley Bridge sites, samples were collected over 2 site visits at each site during June 2001. At the Cloverdale and Healdsburg Memorial Beach sites, samples were collected over 22 site visits at each site from June 2001 to June 2006. At the site downstream of the Cloverdale Water Treatment Plant, samples were collected over 5 site visits from October 2004 to June 2005. Most of the site visits corresponded to fall, winter, spring and early summer seasonal conditions.
Environmental Conditions:	There are no known environmental conditions (e.g., seasonality, land use practices, fire events, storms, etc.) that are related to these data.
QAPP Information:	Quality control was conducted in accordance with the SWAMP Quality Assurance Management Plan (SWAMP 2002).
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 24398, Sulfates Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	33864
Pollutant:	Sulfates
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	4
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 4 samples exceeded the evaluation guideline.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2011): Waters shall not contain taste- or odor-producing substances in concentrations that impart undesirable tastes or odors to fish flesh or other edible products of aquatic origin, or that cause nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	Per 22 CCR 64449 (Table 64449-B): The recommended secondary maximum contaminant level for sulfate is 250 mg/L.
Guideline Reference:	Title 22. Division 4. Chapter 15. Sections 64400 et seq. California Code of Regulations
Spatial Representation:	Samples were collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected approximately once per quarter year from November 2007 to July 2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	31189	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Total Dissolved Solids
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under this section of the policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) Zero of two samples from mainstem Russian River upstream of the Laguna de Santa Rosa exceed the objective, and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 26 samples, or (B) greater than or equal 5 exceedances of the MUN objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 31189, Total Dissolved Solids Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34917
Pollutant:	Total Dissolved Solids
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	2
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the 2 samples exceeded the objective.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): The site specific objective for the mainstem Russian River upstream of the Laguna de Santa Rosa is a 90% upper limit of 170 mg/L. Therefore, 90% of the values in a calendar year must be lower than this limit. In addition the site specific objective of 50% upper limit of 150 mg/L which represents the 50 percentile values of the monthly means for a calendar year applies to this water body. Therefore, 50% or more of the monthly means in a calendar year must be less than or equal to an upper limit.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected on the following dates: 11/26/2007 3/3/2008 4/7/2008 7/14/2008
Environmental Conditions:
QAPP Information:	N/A
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	25394	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	pH
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a minimum of one line of evidence is necessary to assess listing status. Two lines of evidence is available in the administrative record to assess this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2)The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) One of two samples from Foss Creek (LOE 6210) and one of four samples from the mainstem Russian River (LOE 34209) exceed the objective, and these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (A) 26 samples, or (B) greater than or equal 5 exceedances of the objective with less than 26 samples is needed for application of Table 3.2. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 25394, pH Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	34209
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 4 samples exceeded the objective.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Table 3-1 states that the lower limit pH for this water body is 6.5, and the upper limit pH for this water body is 8.5.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from the Russian River at Crocker Road station (114RR5652).
Temporal Representation:	Samples were collected approximately once per quarter year from November 2007 to July 2008.
Environmental Conditions:
QAPP Information:	SWAMP QAPP
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25394, pH Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6210
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Aquatic Life Use:	Fish Migration | Fish Spawning | Freshwater Replenishment | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat
Number of Samples:	2
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	One of the 2 pH samples collected in Foss Creek exceeds the specific conductivity water quality objective. The sample concentrations range from 6.3 to 3.8 uS. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003).
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): The maximum pH objective is 8.5. The minimum pH objective is 6.5.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board

DECISION ID	25080	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Diazinon
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2010)
Revision Status	Revised
Sources:	Source Unknown
Expected TMDL Completion Date:	2025
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.1 of the Listing Policy. Under Section 3.1, a single line of evidence is necessary to assess listing status. Two lines of evidence are available to assess protection of the warm freshwater habitat (WARM) beneficial use (LOEs 41283 and 43585) and two lines of evidence are available to assess protection of the cold freshwater habitat (COLD) beneficial use (LOEs 43584 and 41277) in the mainstem Russian River. One line of evidence is available to assess the COLD beneficial use in Foss Creek (LOE 6216). Two of two water samples from Foss Creek exceed the diazinon objective used to protect the COLD beneficial use. Zero of three water samples and zero of one sediment sample from the mainstem Russian River exceed the diazinon objective used to protect both the COLD and WARM beneficial uses, however these sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met, as a minimum of either (a) 16 samples, or (b) greater than or equal to 2 exceedances of the objective with less than 16 samples is needed for application of Table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing Foss Creek on the section 303(d) list for Diazinon in the Water Quality Limited Segments category (i.e., sufficient justification to list). This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (3) Two of two water samples from Foss Creek exceed the diazinon objective used to protect the COLD beneficial use and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. (4) Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that Foss Creek should be placed on the section 303(d) list for Diazinon because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 25080, Diazinon Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43585
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for diazinon is the median lethal concentration (LC50) of 11 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 11 ug/g is the geometric mean of LC50 values for diazinon from Ding et al. (2011).
Guideline Reference:	Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83–92.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25080, Diazinon Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	6216
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Aquatic Life Use:	Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Warm Freshwater Habitat | Wildlife Habitat
Number of Samples:	2
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	All 2 of the 2 diazinon samples collected from Foss Creek exceed the evaluation guideline. Concentrations range from 0.133 to 0.707 ug/l. The samples were collected as part of the Russian River First Flush sampling event. Data are summarized by Katznelson et al. (2003).
Data Reference:	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Per the Basin Plan (NCRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)
Evaluation Guideline:	Per the National Recommended Water Quality Criteria (USEPA 2006): The 1-hour average maximum concentration criterion for freshwater aquatic life protection is 0.08 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	The samples were collected from 2 sites in Foss Creek as follows: (1) in Foss Creek in downtown Healdsburg, and (2) in Upper Foss Creek.
Temporal Representation:	The samples were collected on November 7, 2002. At each site, 3 instantaneous grab samples were collected over half hour increments. The data are averaged for each site.
Environmental Conditions:	Samples were collected during the first runoff event of the rainy season.
QAPP Information:	Samples were collected in accordance with the study plan and quality control procedures described by Katznelson et al. (2003).
QAPP Information Reference(s):	2002 Russian River First Flush Summary Report. Clean Water Team, Citizen Monitoring Program of the State Water Resources Control Board
Line of Evidence (LOE) for Decision ID 25080, Diazinon Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41277
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Diazinon.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	As stated in CDFG documents from Siepmann and Finlayson, the 4-day freshwater continuous criterion concentration for diazinon is 0.10 µg/L.
Guideline Reference:	Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25080, Diazinon Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	41283
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	3
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Diazinon.
Data Reference:	RWB1 Trend Maintenance Periods FYs 2007 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference:	Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Crocker Road - 114RR5652]
Temporal Representation:	Data was collected over the time period 11/26/2007-7/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan
Line of Evidence (LOE) for Decision ID 25080, Diazinon Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	43584
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Sediment
Matrix:	Sediment
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP data for Russian River HU, Middle Russian River HA, Geyserville HSA to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon.
Data Reference:	Statewide Stream Pollution Trends Study 2008
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:	The evaluation guideline for diazinon is the median lethal concentration (LC50) of 11 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 11 ug/g is the geometric mean of LC50 values for diazinon from Ding et al. (2011).
Guideline Reference:	Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83–92.
Spatial Representation:	Data for this line of evidence for Russian River HU, Middle Russian River HA, Geyserville HSA was collected at 1 monitoring site [ Russian River at Alexander RV Park - 114RRAXRV]
Temporal Representation:	Data was collected on a single day 10/14/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	The SWAMP QAPP (2008) was followed.
QAPP Information Reference(s):	Surface Water Ambient Monitoring Program Quality Assurance Program Plan

DECISION ID	26796	Region 1
Russian River HU, Middle Russian River HA, Geyserville HSA

Pollutant:	Sedimentation/Siltation
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2010)
Revision Status	Original
Sources:	Flow Alteration/Regulation/Modification | Removal of Riparian Vegetation
Expected TMDL Completion Date:	2025
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. It should be noted that data from a third LOE (1745) were re-evaluated in LOE 31150 (and LOE 46509 in the Geyserville HSA water body). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: (1) The data used satisfies the data quality requirements of section 6.1.4 of the Policy. (2) The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. (3) 303(d) listing determinations made prior to 2006 were not held in an assessment database. LOE 4764 is a placeholder for the 303(d) listing data and information from a previous assessment cycle that was initially utilized to make this listing determination. (4) Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Staff Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 26796, Sedimentation/Siltation Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	1745
Pollutant:	Turbidity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	18
Number of Exceedances:	10
Data and Information Type:	Not Specified
Data Used to Assess Water Quality:	By combining the data from the three sampling sites there were 10 samples out of the 18 samples that were above the evaluation guideline. The exceedances ranged from 30.5 NTU up to 356 NTU (Sandler, 2004).
Data Reference:	Placeholder reference 2006 303(d)
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Basin Plan: The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses. Turbidity shall not be increased more than 20 percent above naturally occurring background levels. Allowable zones of dilution within which higher percentages can be tolerated may be defined for specific discharges upon the issuance of discharge permits or waiver thereof. Water shall not contain substances in concentrations that result in deposition of material that causes nuisance or adversely affect beneficial uses.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:	The evaluation guideline that has been used to determine turbidity exceedance is from published-peer reviewed paper, "The Effects of Chronic Turbidity on Density and Growth of Steelheads and Coho Salmon", John W Sigler (1984). The guideline is "In our studies, as little as 25 NTUs of turbidity caused a reduction in fish growth."
Guideline Reference:	Placeholder reference 2006 303(d)
Spatial Representation:	There were three sampling locations along the Russian River, one at Healdsburg, and two at Cloverdale. They are as follows: -Sample site RUS070 is located at the Healdsburg Veteran's beach, Healdsburg. -Sample site RUS080 is located at the Cloverdale 1st St. bridge, Cloverdale. -Sample site RUS090 is located at the Cloverdale River Park, Cloverdale.
Temporal Representation:	RUS070 was sampled once a month January through April 2003. RUS080 and RUS090 were sampled once a month, January through May 2003, and in July and August 2003. Samples were taken on the same days of the month at each location.
Environmental Conditions:
QAPP Information:	Draft QAPP for Volunteer Water Quality Monitoring Project for the Community Clean Water Institute.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 26796, Sedimentation/Siltation Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	4764
Pollutant:	Sedimentation/Siltation
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	Not Specified
Data Used to Assess Water Quality:	This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
Data Reference:	Placeholder reference pre-2006 303(d)
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:
Objective/Criterion Reference:
Evaluation Guideline:
Guideline Reference:
Spatial Representation:
Temporal Representation:
Environmental Conditions:
QAPP Information:	Unspecified
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 26796, Sedimentation/Siltation Region 1      Russian River HU, Middle Russian River HA, Geyserville HSA
LOE ID:	31550
Pollutant:	Turbidity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	14
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	At the present time, natural background turbidity levels have not been determined for this watershed, and exceedence probabilities (the turbidity, associated with flow, that is exceeded X% of the time) have not been calculated. Thus, there is currently no appropriate evaluation guideline for this watershed, and no way to determine whether the objective is being exceeded. This LOE and LOE 46509 replace LOE 1745 which (1) utilized an evaluation guideline that was determined to be inappropriate by the Intagrated Report Roundtable comprised of State and Regional Water Board staff members, and (2) included the evaluation of data from the Russian River at Healdsburg which is in the Guerneville HSA (not the Geyserville HSA).
Data Reference:	Placeholder reference 2006 303(d)
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, North Coast Region (NCRWQCB 2011): Turbidity shall not be increased more than 20 percent above naturally occurring background levels. Allowable zones of dilution within which higher percentages can be tolerated may be defined for specific discharges upon the issuance of discharge permits or waiver thereof.
Objective/Criterion Reference:	Water Quality Control Plan (Basin Plan) for the North Coast Region
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	There were two sampling locations along the Russian River at Cloverdale. They are as follows: -Sample site RUS080 is located at the Cloverdale 1st St. bridge, Cloverdale. -Sample site RUS090 is located at the Cloverdale River Park, Cloverdale.
Temporal Representation:	RUS080 and RUS090 were sampled once a month, January through May 2003, and in July and August 2003. Samples were taken on the same days of the month at each location.
Environmental Conditions:
QAPP Information:	Draft QAPP for Volunteer Water Quality Monitoring Project for the Community Clean Water Institute.
QAPP Information Reference(s):	Placeholder reference 2006 303(d)