Final California 2010 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 1 - North Coast Region

Water Body Name:	Klamath River HU, Middle HA, Iron Gate Dam to Scott River
Water Body ID:	CAR1053505320011215015907
Water Body Type:	River & Stream


DECISION ID	17488	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Aldrin \| Atrazine \| Azinphos, Ethyl (Ethyl Guthion) \| Bolstar \| Carbofuran \| Chlordane \| Chlorothalonil \| Chlorpyrifos \| Chlorpyrifos, methyl \| Ciodrin \| Dacthal \| Demeton s \| Dichlofenthion \| Dichlorvos \| Dieldrin \| Dimethoate \| Dioxathion \| Dyfonate (Fonofos or Fonophos) \| Endrin \| Endrin Ketone \| Ethion \| Ethoprop \| Famphur \| Fenchlorphos \| Fenitrothion \| Fensulfothion \| Fenthion \| Glyphosate \| Heptachlor \| Heptachlor epoxide \| Hexachlorobenzene/ HCB \| Hexachlorocyclohexane (HCH), alpha \| Hexachlorocyclohexane (HCH), beta \| Leptophos \| Lindane/gamma Hexachlorocyclohexane (gamma-HCH) \| Merphos \| Methidathion \| Methoxychlor \| Methyl Parathion \| Mevinphos \| Molinate \| Naled \| Oxadiazon \| Oxychlordane \| Phorate \| Phosmet \| Phosphamidon \| Prometon (Prometone) \| Prometryn \| Propazine \| Secbumeton \| Simazine \| Simetryn \| Sulfotep \| Tedion \| Terbufos \| Terbuthylazine \| Terbutryn \| Tetrachlorvinphos \| Thiobencarb/Bolero \| Thionazin \| Tokuthion \| Toxaphene \| 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
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:	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. Two lines of evidence are available in the administrative record to assess this pollutant. None of the samples in LOE #30117 exceed the water quality objective.The pollutants in LOE #29813 do not have water quality objectives and, therefore, a decision could not be made. The samples were analyzed for 92 pesticides, pesticide constituents, isomers, or metabolites. For each of the 92 pesticide analytes, 7 to 8 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). 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. None of 709 samples for both LOEs, #29813, without criteria, or LOE #30117 with criteria, exceeded the water quality guidelines 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 17488, Multiple Pollutants	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

29813

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

709

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 709 pesticides samples collected in the mainstem Klamath 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 92 pesticides, pesticide constituents, isomers, or metabolites. For each of the 92 pesticide analytes, 7 to 8 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 taken in well-mixed flows in glides or riffles from below Iron Gate Reservoir (SWAMP Station ID 105KLAMCO).

Temporal Representation:

The samples were collected as grab samples during 51 site visits (17 site visits at each of the 3 sites) during the fiscal years of 2000 to 2005. The site visits corresponded to fall, winter, spring and early summer 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 17488, Multiple Pollutants	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

30117

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

709

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

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:

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:

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 taken in well-mixed flows in glides or riffles from below Iron Gate Reservoir (SWAMP Station ID 105KLAMCO).

Temporal Representation:

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	12313	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Aluminum
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. None of the 36 aluminum samples exceed the water quality 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) None of the 36 samples exceeded the aluminum 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12313, Aluminum	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25358

Pollutant:

Aluminum

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 36 aluminum samples collected from the mainstem Klamath 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): 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 taken in well-mixed flows in glides or riffles from 3 sampling locations in the mainstem Klamath River, as follows: (1) below Iron Gate Reservoir (SWAMP Station ID 105KLAMCO), (2) at the Gottville River Access above the confluence with the Shasta River (SWAMP Station ID 105KLARMP), and (3) below Everille Creek (SWAMP Station ID 105KLAEVC).

Temporal Representation:

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	15725	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Ammonia as Nitrogen
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. None of the 50 ammonia as nitrogen samples exceed 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) None of the 50 samples exceed the 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, North Coast Regional Water Board staff concludes that the water body-pollutant combination should not be placed on the Section 303(d) List because applicable water quality standards are being attained.

State Board 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 15725, Ammonia as Nitrogen	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

26295

Pollutant:

Ammonia as Nitrogen

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 50 ammonia as nitrogen samples collected from the Klamath 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:

Spatial Representation:

Temporal Representation:

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	10635	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Arsenic \| Cadmium \| Chromium (total) \| Copper \| Lead \| Mercury \| Nickel \| Selenium \| Silver \| Zinc
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. None of the 353 metals samples exceed the water quality 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) None of the 353 samples exceeded the metal objectives, and this does not exceed the allowable frequency of 31 per the binomial distribution described in Section 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 10635, Multiple Pollutants	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

21506

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

353

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 353 metals samples collected in the mainstem Klamath River exceed the objectives. There were 10 to 12 samples collected for each of the 10 metal parameters at each of the 3 sites. 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:

Temporal Representation:

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	12434	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Chloride
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 Section 3.2, 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. None of the 51 chloride samples exceed the evaluation guideline. 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) None of the 51 samples exceeded the chloride evaluation guideline used to interpret the water quality 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12434, Chloride	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25398

Pollutant:

Chloride

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 51 chloride samples collected in the mainstem Klamath 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:

Temporal Representation:

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	12478	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	PCBs (Polychlorinated biphenyls)
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. None of the 400 polychlorinated biphenyl (PCB) samples exceed the evaluation guideline. 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) None of the 400 samples exceeded the PCB evaluation guideline used to interpret the water quality objective, and this does not exceed the allowable frequency of 35 per the binomial distribution described in Section 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12478, PCBs (Polychlorinated biphenyls)	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25457

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

400

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 400 polychlorinated biphenyl (PCB) analytes collected in the mainstem Klamath River exceed the evaluation guideline. Each of the 8 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 taken in well-mixed flows in glides or riffles below Iron Gate Reservoir (SWAMP Station ID 105KLAMCO).

Temporal Representation:

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	12843	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Pesticides
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 in the administrative record to assess this pollutant. None of the 716 pesticides samples exceed the water quality 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) None of the 716 samples exceeded the pesticide water quality objective, and this does not exceed the allowable frequency of 62 per the binomial distribution described in Section 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12843, Pesticides	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25595

Pollutant:

Hexachlorocyclohexane (HCH)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 7 alpha-HCH samples collected in the mainstem Klamath River exceed the evaluation guideline. Sample concentration range from non-detect (with a reporting limit of 0.002 ug/l) to detected at least at 0.002 ug/l 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).

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:

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 alpha-hexachlorocyclohexane (HCH) (also listed as alpha-BHC) for the protection of source waters for human health consumption of water and organisms is 0.0026 ug/l.

Guideline Reference:

Spatial Representation:

Samples were taken in well-mixed flows in glides or riffles from below Iron Gate Reservoir (SWAMP Station ID 105KLAMCO).

Temporal Representation:

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	10015	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Specific Conductivity
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 Section 3.2 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. None of the 95 specific conductivity samples exceed the water quality 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) None of the 95 samples exceed the specific conductivity 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 10015, Specific Conductivity	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

21215

Pollutant:

Specific Conductivity

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 95 specific conductivity samples collected from the mainstem Klamath 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): The 90% upper limit specific conductance objective at 77 F is 350 micromhos (or mS/cm2). The 50% upper limit specific conductance objective at 77 F is 275 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 taken in well-mixed flows in glides or riffles from 6 sampling locations in the mainstem Klamath River, as follows: (1) below Iron Gate Reservoir (SWAMP Station ID KLAMCO), (2) at the Gottville River Access above the confluence with the Shasta River (SWAMP Station ID KLARMP), (3) below Everille Creek (SWAMP Station ID KLAEVC), (4) at Seiad Valley (SWAMP Station ID KLAMSI), (5) at Orleans (SWAMP Station ID KLAMOR), and (5) at Weitchpec above the confluence with the Trinity River (SWAMPT Station ID KLAMWP).

Temporal Representation:

The samples were collected as grab samples during 95 site visits during the fiscal years of 2000 to 2005, including station KLAMOR which had 5 site visits during the 2002 to 2003 fiscal years. The site visits corresponded to fall, winter, spring and early summer 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	12504	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Sulfates
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 Section 3.2, 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. None of the 51 sulfate samples exceed the evaluation guideline. 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) None of the 51 samples exceed the sulfate evaluation guideline used to interpret the water quality 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, North Coast 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 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 12504, Sulfates	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25520

Pollutant:

Sulfates

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Municipal & Domestic Supply

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

None of the 51 sulfate samples collected in the mainstem Klamath 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:

Temporal Representation:

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	13974	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Cyanobacteria hepatotoxic microcystins
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	Agriculture \| Dam Construction \| Drainage/Filling Of Wetlands \| Flow Alteration/Regulation/Modification \| Habitat Modification \| Hydromodification \| Internal Nutrient Cycling (primarily lakes) \| Source Unknown
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This decision applies to the mainstem Klamath River in the Klamath River Hydrologic Unit, Middle Klamath River Hydrologic Area, Iron Gate Dam to Scott River reach. This pollutant is being considered for placement on the Section 303(d) List under Section 3.11 of the Listing Policy. Three lines of evidence are available in the administrative record. The LOEs for microcystin toxin in the water column (LOE 25995) and Microcystis cells/ml in the water column (LOE 26055) have evaluation guidelines (WHO 2003) that meet the requirements of the Listing Policy. The LOE for microcystin toxin in tissue (LOE 25846) has an evaluation guideline (Alexeff 2008) that State Water Board staff believes does not meet the requirements of the Listing Policy, due to the fact that the guideline has not been peer-reviewed or published in an official OEHHA agency document. Therefore, only data from LOEs 25995 and 26055 for microcystin and Microcystis in the water column were utilized to assess this pollutant. Data from LOE 25846 on microcystin in tissue are as follows, but were not utilized to assess this pollutant: one out of 4 tissue microcystin toxin samples exceeded the evaluation guideline (Alexeff 2008). Based on the readily available data and information, the situation-specific weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the Section 303(d) List in the Water Quality Limited Segments category (i.e., sufficient justification to list). This conclusion is based on the staff findings that: (1) Three of 31 water column microcystin toxin samples (LOE 25995), and 4 of 14 water column Microcystis cell samples (LOE 26055) exceed the evaluation guidelines used to interpret the water quality objective. (2) Any exceedance of the evaluation guidelines indicates non-attainment of standards. In compliance with Section 3.11 of the Listing Policy, a water segment shall be placed on the Section 303(d) List if the weight of evidence indicates non-attainment. (3) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (4) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (5) 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, North Coast RWQCB staff concludes that the water body-pollutant combination should be placed on the Section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board 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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 13974, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25846

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Fish whole body

Beneficial Use:

Commercial or recreational collection of fish, shellfish, or organisms

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fish tissue analysis

Data Used to Assess Water Quality:

One of the 4 microcystin samples collected from mussel tissue from the mainstem Klamath River in 2007 exceeds the evaluation guideline. Sample concentrations range from non-detect (with a reporting limit of 1.0 ng/g) to 2,803.10 ng/g. Samples were collected by the California Department of Fish and Game (CDFG) and analyzed for microcystin by the CDFG Fish and Wildlife Water Pollution Control Laboratory in Rancho Cordova, CA. Data are summarized by Kann (2008). The presence of the toxin microcystin in fish and mussels in the Klamath River has the potential to impair the Native American Culture (CUL) and Subsistence Fishing (FISH) beneficial uses, as well as the Commercial and Sport Fishing (COMM) beneficial use listed above.

Data Reference:

Technical Memorandum. Microcystin Bioaccumulation in Klamath River Fish and Freshwater Mussel Tissue: Preliminary 2007 Results. Prepared by Jacob Kann, Ph.D. of Aquatic Ecosystem Sciences LLC. Prepared for Karuk Tribe of California.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (North Coast RWQCB 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. 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) - North Coast Region (Region 1)

Evaluation Guideline:

Per the California Office of Environmental Health Hazard Assessment (OEHHA) (Alexeeff 2008): The upper bound of the Advisory Tissue Level range for the one serving (8 oz. uncooked fish, 6 oz. cooked, equal to 32 g/day) per week category is 26 ng total microcystins per gram of fish (26 ng/g). This Advisory Tissue Level applies to a composite of 3 or more individual samples of edible tissue.

Guideline Reference:

Letter of August 6, 2008, to Randy Landolt, Managing Director, Pacificorp Energy, from George V. Alexeeff, Ph.D, DABT, Deputy Director for Scientific Affairs, California Office of Environmental Health Hazard Assessment, regarding information related to the occurrence of microcystin in the tissues of Klamath River biota

Spatial Representation:

Mussel samples were collected from the mainstem Klamath River near I-5 and below I-5.

Temporal Representation:

Samples were collected at the near I-5 site on July 11, 2007. Samples were collected at the below I-5 site on November 5, 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:

Samples were collected and analyzed in accordance with the quality assurance procedures described in the "Technical Memorandum. Microcystin Bioaccumulation in Klamath River Fish and Freshwater Mussel Tissue: Preliminary 2007 Results" (Kann 2008).

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 13974, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

26055

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Four of the 14 Microcystis cell samples collected in 2008 exceed the evaluation guideline. Additionally, four of the 14 samples analyzed for Microcystis cells exceeded the Blue Green Algae Work Group (2008) guideline of 40,000 Microcystis cells/ml if cell populations are dominated by Microcystis and Planktothrix to protect the recreational exposure of a child. Microcystis cell values range from 55 cells/ml to 1,394,139 cells/ml. Samples were collected and summarized by the Karuk Tribe of California (Karuk 2008 - data).

Data Reference:

Cyanobacteria in California Recreational Water Bodies. Providing Voluntary Guidance about Harmful Algal Blooms, Their Monitoring, and Public Notification. Draft. September 2008. Blue Green Algae Work Group of the State Water Resources Control Board, Department of Public Health, and Office of Environmental Health and Hazard Assessment

Karuk Tribe 2008 BGA Data (KR TOX Table 2008). Data for Blue Green Algae in the Klamath River, July 2008 to September 2008

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (NCRWQCB 2007): All water 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) - North Coast Region (Region 1)

Evaluation Guideline:

Per the World Health Organization (WHO 2003): The recommended guideline for Microcystis cells in recreational waters associated with a moderate probability of adverse health effects is 100,000 cells/ml. This cell count evaluation guideline is a strong indicator of potential toxicity associated with the toxin microcystin.

Guideline Reference:

World Health Organization. 2003. Guidelines for Safe Recreational Water Environments: Volume 1 Coastal and Freshwaters.

Spatial Representation:

Samples were collected in the mainstem Klamath River at 4 locations as follows: (1) at Brown Bear River Access, (2) at Beaver Creek Fish Disease Site, (3) below Iron Gate Dam, and (4) at Walker Bridge.

Temporal Representation:

Grab samples were collected below Iron Gate Dam between July 10, 2008 and September 17, 2008. Grab samples were collected at Walker Bridge downstream of the town of Klamath River between July 23, 2008 and September 17, 2008. Grab samples were collected at the Beaver Creek Fish Disease site and Brown Bear River Access on September 2, 2008.

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 according to the procedures summarized in the "Draft Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan" (Karuk 2008-MonitoringPlan).

QAPP Information Reference(s):

Draft Mid-Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan (SAP). Karuk Tribe of California Water Quality Program.

Line of Evidence (LOE) for Decision ID 13974, Cyanobacteria hepatotoxic microcystins	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25995

Pollutant:

Cyanobacteria hepatotoxic microcystins

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Three of the 31 microcystin samples collected in the mainstem Klamath River between the Iron Gate Dam and the Scott River in 2008 exceed the evaluation guideline. Additionally, four of the 31 microcystin samples exceeded the Blue Green Algae Work Group (2008) guideline for microcystin toxin of 8 ug/L to protect the recreational exposure of a child. Microcystin concentrations range from non-detect to 840 ug/L. Samples were collected and summarized by the Karuk Tribe of California (Karuk 2008 - data).

Data Reference:

Karuk Tribe 2008 BGA Data (KR TOX Table 2008). Data for Blue Green Algae in the Klamath River, July 2008 to September 2008

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the World Health Organization (WHO 2003): The recommended guideline for microcystin toxin in recreational waters associated with a moderate probability of adverse health effects is 20 ug/L.

Guideline Reference:

World Health Organization. 2003. Guidelines for Safe Recreational Water Environments: Volume 1 Coastal and Freshwaters.

Spatial Representation:

Temporal Representation:

Grab samples were collected below Iron Gate Dam between July 10, 2008 and September 17, 2008. Grab samples were collected at Walker Bridge downstream of the town of Klamath River between July 23, 2008 and September 17, 2008. Grab samples were collected at the Beaver Creek Fish Disease Site and Brown Bear River Access on September 2 ,2008.

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 according to the procedures summarized in the "Draft Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan" (Karuk 2008-Monitoring Plan).

QAPP Information Reference(s):

Draft Mid-Klamath River Nutrient, Periphyton, Phytoplankton and Algal Toxin Sampling Analysis Plan (SAP). Karuk Tribe of California Water Quality Program.


DECISION ID	6264	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Nutrients
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Sources:	Nonpoint Source \| Out-of-state source \| Point Source
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

Regional Board Decision Recommendation:	No new data were assessed for 2008. The decision has not changed.

State Board 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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 6264, Nutrients	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

3677

Pollutant:

Nutrients

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecified--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:

Unknown

Temporal Representation:

Unknown

Environmental Conditions:

Unknown

QAPP Information:

Unknown

QAPP Information Reference(s):


DECISION ID	6265	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Organic Enrichment/Low Dissolved Oxygen
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Sources:	Nonpoint Source \| Out-of-state source \| Point Source
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

Regional Board Decision Recommendation:	No new data were assessed for 2008. The decision has not changed.

State Board 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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 6265, Organic Enrichment/Low Dissolved Oxygen	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

3678

Pollutant:

Organic Enrichment/Low Dissolved Oxygen

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

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:

Unknown

Temporal Representation:

Unknown

Environmental Conditions:

Unknown

QAPP Information:

Unknown

QAPP Information Reference(s):


DECISION ID	13197	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Sediment
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	Channel Erosion \| Dredge Mining \| Erosion/Siltation \| Grazing-Related Sources \| Highway Maintenance and Runoff \| Logging Road Construction/Maintenance \| Natural Sources \| Other \| Removal of Riparian Vegetation \| Silviculture
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the Section 303(d) List under Section 3.11 of the Listing Policy. The weight of evidence indicates there is sufficient justification in favor of placing Beaver Creek, Cow Creek, Deer Creek, Hungry Creek, and West Fork Beaver Creek on the Section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: (A) The weight of evidence demonstrates that sediment conditions in Beaver Creek, Cow Creek, Deer Creek, Hungry Creek, and West Fork Beaver Creek do not attain sediment objectives and/or evaluation guidelines, in compliance with Section 3.11 of the Listing Policy, as described below: Primary evidence: (1) Beaver Creek exceeds the percent fines (LOE 25689) and embeddedness (LOE 25690) guidelines. (2) Cow Ck exceeds the percent fines (LOE 25689) and embeddedness (LOE 25690) guidelines. (3) Deer Ck exceeds the percent fines (LOE 25689) and embeddedness (LOE 25690) guidelines. (4) Hungry Ck exceeds the percent fines (LOE 25689) and embeddedness (LOE 25690) guidelines. (5) West Fork Beaver Ck exceeds the percent fines (LOE 25689) and embeddedness (LOE 25690) guidelines. Supporting evidence: (1) Beaver Creek Watershed shows pool reduction as a result of the flood of 1997 (LOE 25700) and cumulative impacts (LOE 25691), which exceed the sediment water quality objective. (2) The following subwatersheds in the Beaver Creek Watershed exceed the road density (LOE 25709) guideline: Buckhorn Creek Subwatershed, Bumblebee Creek Subwatershed, Cow Creek Subwatershed, Hungry Creek Subwatershed, Grouse Creek Subwatershed, West Fork Beaver Creek Subwatershed. Evidence not incorporated in final decision: Modeling data from the USFS (LOEs 25717, 25713, 25714, 25719, and 25688) pertaining to landslide volumes, ERA/TOC ratios, and surface erosion values are not being incorporated in this decision as public comments submitted on the Integrate Report pointed out that the modeling results were out-of-date and that newer results were available. In addition, the Functionally Equivalent Document to the Listing Policy states that modeling data can not be used as primary evidence. Newer modeling results were submitted by the USFS during the public comment period and will be considered as supporting evidence in the next listing cycle. (B) The data used satisfies the data quality requirements of Section 6.1.4 of the Policy. (C) The data used satisfies the data quantity requirements of Section 6.1.5 of the Policy. (D) Pursuant to Section 3.11 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, North Coast RWQCB staff conclude that Beaver Creek, Cow Creek, Deer Creek, Hungry Creek, and West Fork Beaver Creek should be placed on the Section 303(d) List because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.

State Board 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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25714

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

None of the 9 subwatersheds within the Horse Creek Watershed have modeled ERA/TOC ratios that exceed the evaluation guideline. ERA/TOC ratios range from 0.28 to 0.94. Ratios were modeled by staff of the Klamath National Forest. Results are summarized in the "Horse Creek Ecosystem Analysis" (USFS 2002).

Data Reference:

Horse Creek Ecosystem Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Per the Basin Plan (North Coast RWQCB 2007): 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.

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Quantitative Models for Surface Erosion, Mass-Wasting and ERA/TOC" (Elder & Reichert 2004): An Equivalent Roaded Area/Threshold of Concern (ERA/TOC) percent, or risk ratio, greater than 1.0 indicates the inference point where the risk of initiating or contributing to existing adverse cumulative watershed impacts (including impacts from excess sediment discharges) becomes a cause for concern.

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Modeling was conducted for 9 subwatersheds in the Horse Creek Watershed as follows: Upper Horse Creek, Lower Horse Creek, Middle Creek, Buckhorn Creek, Kohn/Dona Creek, Doggett Creek, Blue Heron Creek, Collins/Lime Creek, and Quigley Creek subwatersheds.

Temporal Representation:

The temporal representation of the model is unknown.

Environmental Conditions:

The environmental conditions (e.g., seasonality, land use practices, fire, floods, etc.) for the model are unknown.

QAPP Information:

Model results were calculated as part of the ERA Model conducted by staff of the Klamath National Forest in accordance with the procedures described by Elder and Reichert (2004).

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25719

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

None of the 8 subwatersheds within the Beaver Creek Watershed have modeled ERA/TOC ratios that exceed the evaluation guideline. ERA/TOC ratios range from 0.332 to 0.85. Ratios were modeled by staff of the Klamath National Forest. Results are summarized in the "Beaver Creek Environmental Analysis " (USFS 1996).

Data Reference:

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Samples were collected in 9 subwatersheds in the Beaver Creek Watershed. The 8 subwatersheds located in California are Cow Creek, Grouse Creek, Hungry Creek, Bumblebee Creek, Jaynes Canyon Creek, Upper West Fork Beaver Creek, Lower West Fork Beaver Creek, and Buckhorn Creek subwatersheds. The 1 subwatershed located in Oregon, and therefore not considered in this assessment, is Long John Creek.

Temporal Representation:

Model components included current (pre-1996) data layers.

Environmental Conditions:

A major fire occurred in 1987. Major storms occurred in 1964 and 1972.

QAPP Information:

Model components, data sources, and methodology are described in the "Beaver Creek Ecosystem Analysis" (USFS 1996).

QAPP Information Reference(s):

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25717

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

All 9 of the 9 subwatersheds within the Horse Creek Watershed have modeled surface erosion volumes that exceed the evaluation guideline. Surface erosion volumes range from 462% over back ground to 1,061% over background. Volumes are modeled by staff of the Klamath National Forest. Results are summarized in the "Horse Creek Environmental Analysis" (USFS 2002).

Data Reference:

Horse Creek Ecosystem Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Quantitative Models for Surface Erosion, Mass-Wasting and ERA/TOC" (Elder & Reichert 2004): Surface erosion volumes of 400% over background conditions as computed by USFS Universal Soil Loss Equation Model indicate the inference point where risk of initiating or contributing to existing adverse cumulative watershed impacts (including impacts from excess sediment discharges) becomes a cause for concern.

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Temporal Representation:

The temporal representation of the model is unknown.

Environmental Conditions:

The environmental conditions (e.g. seasonality, land use practices, fire, floods, etc.) for the model are unknown.

QAPP Information:

Model results were calculated as part of the Universal Soil Loss Equation Model conducted by staff of the Klamath National Forest in accordance with the procedures described by Elder and Reichert (2004).

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25713

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

None of the 9 subwatersheds within the Horse Creek Watershed have modeled landslide volumes that are 200% or more over undisturbed conditions and exceed the evaluation guideline. Landslide volumes range from 124.3% to 199%. Landslide volumes were modeled by staff of the Klamath National Forest. Results are summarized in the Horse Creek Environmental Analysis (USFS 2002).

Data Reference:

Horse Creek Ecosystem Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Quantitative Models for Surface Erosion, Mass-Wasting and ERA/TOC" (Elder & Reichert 2004): Landslide/mass-wasting volumes of 200% over background conditions as computed by the USFS mass wasting model indicate the inference point where the risk of initiating or contributing to existing adverse cumulative watershed impacts (including impacts from excess sediment discharges) becomes a cause for concern.

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Temporal Representation:

The temporal representation of the model is unknown.

Environmental Conditions:

The environmental conditions (e.g., seasonality, land use practices, fire, floods, etc.) for the model are unknown.

QAPP Information:

Model results were calculated as part of the GEO Mass Wasting Model conducted by staff of the Klamath National Forest in accordance with the procedures described by Elder and Reichert (2004).

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25690

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

HABITAT ASSESSMENT

Data Used to Assess Water Quality:

5 of 5 waterbodies within the Beaver Creek Watershed have embeddedness values that exceed the evaluation guideline. Compositions range from 34% to 63% embedded. Samples were collected by staff of the Klamath National Forest. Results are summarized in the Beaver Creek Environmental Analysis (USFS 1996).

Data Reference:

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Klamath National Forest Land and Resource Management Plan" (USFS 2001), also known as the Forest Plan: Less than 20% embeddedness values in the channel substrate. Per the "Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices" (North Coast RWQCB 2006), embedded gravels can be cemented into the stream substrate, generally do not lift out easily, and can prevent spawning salmonids from building their redds to lay eggs. Embedded gravels also contain high levels of fine material, which reduces the permeability in the egg pocket and can slow growth and cause mortality.

Guideline Reference:

Klamath National Forest Land and Resource Management Plan 1995 (including all amendments as of 11/21/01). Siskiyou County, CA and Jackson County, OR. Pacific Southwest Region, United Stated Department of Agriculture Forest Service

Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices. State of California North Coast Regional Water Quality Control Board

Spatial Representation:

Samples were collected in 7 waterbodies in the Beaver Creek Watershed. The 5 waterbodies located within California are: Beaver Creek, West Fork Beaver Creek, Deer Creek, Hungry Creek, and Cow Creek. The 2 waterbodies located in Oregon, and therefore not considered here, are: Long John Creek and West Long John Creek.

Temporal Representation:

The temporal representation of the samples is unknown.

Environmental Conditions:

A major fire occurred in the Beaver Creek Watershed in 1987. Major storms occurred in 1964 and 1972.

QAPP Information:

Samples were collected and analyzed in accordance with the procedures similar to those found in the "Stream Condition Inventory (SCI) Technical Guide" (Frazier et al. 2005).

QAPP Information Reference(s):

Stream Condition Inventory Technical Guide. USDA Forest Service, Pacific Southwest Region - Ecosystem Conservation Staff. Vallejo, CA. 111 pp

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25700

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Surveys of fish and game biologists/other professionals

Data Used to Assess Water Quality:

"The Flood of 1997 Klamath National Forest" report (de la Fuente and Elder 1998) states that "[b]ased on observations of fisheries personnel, there appeared to be considerable reduction in size, volume and depth of pools in Elk, Indian, Beaver, Grider, Tompkins, South Fork Salmon, and Walker Creeks, and there is a larger proportion of fine sediment in the substrate. Alluvial reaches were made shallower and wider due to sedimentation." Only Beaver Creek falls within the Iron Gate Dam to Scott River portion of the Middle Klamath River Hydrologic Area.

Data Reference:

The flood of 1997-Klamath National Forest. Phase 1 Final Report. Yreka, CA: Klamath National Forest

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The assessment applies to the Beaver Creek Watershed.

Temporal Representation:

The assessment was made after the flood of December 26, 1996 to January 3, 1997. Findings were made available in November 1998.

Environmental Conditions:

Conditions were a result of the storm of December 26, 1996 to January 3, 1997.

QAPP Information:

The assessment was made by professional staff of the Klamath National Forest.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25688

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

MODELING

Data Used to Assess Water Quality:

Three of the 8 subwatersheds within the Beaver Creek Watershed have modeled landslide volumes that are 200% or more over undisturbed conditions and exceed the evaluation guideline. The 3 subwatersheds are Grouse Creek, Hungry Creek, and Bumblebee Creek subwatersheds. Landslide volumes were modeled by staff of the Klamath National Forest. Results are summarized in the Beaver Creek Environmental Analysis (USFS 1996).

Data Reference:

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Spatial Representation:

Modeling was conducted for 9 subwatersheds in the Beaver Creek Watershed. The 8 subwatersheds located in California are Cow Creek, Hungry Creek, Bumblebee Creek, Jaynes Canyon Creek, Upper West Fork Beaver Creek, Lower West Fork Beaver Creek, and Buckhorn Creek subwatersheds. The 1 subwatershed located in Oregon, and therefore not considered in this assessment, is Long John Creek.

Temporal Representation:

The temporal representation of the model is unknown.

Environmental Conditions:

A major fire occurred in the Beaver Creek Watershed in 1987. Major storms occurred in 1964 and 1972.

QAPP Information:

Model results were calculated as part of the GEO Mass Wasting Model conducted by staff of the Klamath National Forest in accordance with the procedures described by Elder and Reichert (2004). These procedures were used to determine the data described in the Beaver Creek Environmental Analysis from 1996, although they were not published until 2004. Landslide rates were modeled using the landslide rates developed from the Salmon Sub-Basin Sediment Analysis (de la Fuente 1991). Air photo interpretation and field verification of observable failures and debris torrents that delivered sediment to streams were used to determine the landslide rates. It should be noted that the Salmon River watershed received more rainfall than the Beaver Creek watershed. Additionally, a large portion of the granitic terrains in the Salmon River are deeply dissected and prone to landsliding, whereas those in the Beaver Creek Watershed are not. Beaver Creek does have subwatersheds underlain by the Condrey Mountain Schist, which is highly erosive, although not quite as much as the deeply weathered granitic terrains in the Salmon River Watershed.

QAPP Information Reference(s):

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25709

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Land use information and location of sources

Data Used to Assess Water Quality:

All 8 of 8 subwatersheds in the Beaver Creek Watershed have road densities that exceed the evaluation guideline. Road densities range from 3.0 to 4.9 miles per square mile. Data are summarized in the "Beaver Creek Environmental Analysis" (USFS 1996).

Data Reference:

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per NOAA Fisheries (1996): The guideline for the properly functioning condition for road density and location is less than 2 miles of road per square mile of watershed with no valley bottom roads.

Guideline Reference:

Making Endangered Species Act Determinations of Effect for Individual or Group Actions at the Watershed Scale. Prepared by the National Oceanic and Atmospheric Administration National Marine Fisheries Service Environmental and Technical Services Division Habitat Conservation Branch

Spatial Representation:

The data applies to 9 subwatersheds within the Beaver Creek Watershed. The 8 subwatersheds located in California are Cow Creek, Grouse Creek, Hungry Creek, Bumblebee Creek, Jaynes Canyon, Upper West Fork Creek, Lower West Fork Creek, and Buckhorn Creek subwatersheds. The 1 subwatershed located in Oregon, and therefore not considered in this assessment, is Long John Creek.

Temporal Representation:

The temporal representation of the data is unknown.

Environmental Conditions:

A major fire occurred in the Beaver Creek Watershed in 1987. Major storms occurred in 1964 and 1972.

QAPP Information:

Model results were calculated as part of the Equivalent Roaded Area (ERA) Model conducted by staff of the Klamath National Forest in accordance with the procedures described by Elder and Reichert (2004).

QAPP Information Reference(s):

Quantitative Models for Surface Erosion, Mass-wasting and ERA/TOC. CWE 2004. Cumulative Watershed Effects Analysis Process Paper. Klamath National Forest

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25691

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Surveys of fish and game biologists/other professionals

Data Used to Assess Water Quality:

In their conclusions in the Beaver Creek Environmental Analysis (USFS 1996), the Klamath National Forest states that "[t]he riparian and aquatic habitat in Beaver Creek is currently affected by roads in the Riparian Reserves, upslope roads, and other disturbances that cause erosion and stream sedimentation. . . Cumulative watershed impacts have resulted in impaired fish and amphibian habitat quality, mostly excessive fine sediment in streambeds.In their conclusions in the Beaver Creek Environmental Analysis (USFS 1996), the Klamath National Forest states that "[t]he riparian and aquatic habitat in Beaver Creek is currently affected by roads in the Riparian Reserves, upslope roads, and other disturbances that cause erosion and stream sedimentation. . . Cumulative watershed impacts have resulted in impaired fish and amphibian habitat quality, mostly excessive fine sediment in streambeds. The high amount of fines in spawning beds limits egg survival and is a major limiting factor of fish production in the Beaver Creek Watershed.

Data Reference:

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The assessment applies to the Beaver Creek Watershed.

Temporal Representation:

The assessment was made in July 1996.

Environmental Conditions:

A major fire occurred in the Beaver Creek Watershed in 1987. Major storms occurred in 1964 and 1972.

QAPP Information:

The assessment was made by professional staff of the Klamath National Forest.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 13197, Sediment	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

25689

Pollutant:

Sediment

LOE Subgroup:

Adverse Biological Responses

Matrix:

-N/A

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Aquatic Life Use:

Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

HABITAT ASSESSMENT

Data Used to Assess Water Quality:

5 of 5 waterbodies within the Beaver Creek Watershed have percent fine compositions that exceed the evaluation guideline. Compositions range from 22% to 50% fines. Samples were collected by staff of the Klamath National Forest. Results are summarized in the Beaver Creek Environmental Analysis (USFS 1996).

Data Reference:

Beaver Creek Environmental Analysis. United States Department of Agriculture, Forest Service, Klamath National Forest, Yreka, CA

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan (Basin Plan) - North Coast Region (Region 1)

Evaluation Guideline:

Per the "Klamath National Forest Land and Resource Management Plan" (USFS 2001), also known as the Forest Plan: Less than 15% fines of the substrate composition as the area weighted average in spawning habitat. Per the "Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices" (North Coast RWQCB 2006), fine sediment particles in the substrate of a waterbody have the potential to fill the interstitial spaces of gravels used by salmonids to hold and incubate eggs, suffocating the eggs. Fines from 1.0 mm to 10.0 mm in diameter are also capable of blocking fry emergence. High amounts of fines can result in reduced embryo and fry survival and have deleterious effects on the cold water fishery beneficial uses.

Guideline Reference:

Desired Salmonid Freshwater Habitat Conditions for Sediment-Related Indices. State of California North Coast Regional Water Quality Control Board

Spatial Representation:

Samples were collected in 7 waterbodies in the Beaver Creek Watershed. The 5 waterbodies located in California are Beaver Creek, West Fork Beaver Creek, Deer Creek, Hungry Creek, and Cow Creek. The 2 waterbodies located in Oregon, and therefore not considered in this assessment, are Long John Creek and West Long John Creek.

Temporal Representation:

The temporal representation is unknown.

Environmental Conditions:

A major fire occurred in the Beaver Creek Watershed in 1987. Major storms occurred in 1964 and 1972.

QAPP Information:

Samples were collected and analyzed in accordance with procedures similar to those found in the "Stream Condition Inventory (SCI) Technical Guide" (Frazier et al. 2005).

QAPP Information Reference(s):

Stream Condition Inventory Technical Guide. USDA Forest Service, Pacific Southwest Region - Ecosystem Conservation Staff. Vallejo, CA. 111 pp


DECISION ID	6266	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

Pollutant:	Temperature, water
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (TMDL required list)(2006)
Revision Status	Original
Sources:	Flow Alteration/Regulation/Modification \| Habitat Modification \| Hydromodification \| Nonpoint Source \| Removal of Riparian Vegetation \| Upstream Impoundment
Expected TMDL Completion Date:	2010
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	303(d) listing decisions made prior to 2006 were not held in an assessment database. The Regional Boards will update this decision when new data and information become available and are assessed.

Regional Board Decision Recommendation:	No new data were assessed for 2008. The decision has not changed.

State Board 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.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 6266, Temperature, water	Region 1
Klamath River HU, Middle HA, Iron Gate Dam to Scott River

LOE ID:

3679

Pollutant:

Temperature, water

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Cold Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Unspecified--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:

Unknown

Temporal Representation:

Unknown

Environmental Conditions:

Unknown

QAPP Information:

Unknown

QAPP Information Reference(s):