Draft California 2020 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 5 - Central Valley Region

Water Body Name:	Littlejohns Creek
Water Body ID:	CAR5314000020070511145114
Water Body Type:	River & Stream

DECISION ID	127080	Region 5
Littlejohns Creek

Pollutant:	Indicator Bacteria
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Sources:	A Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant for Water Contact Recreation (REC-1). Thirty-seven of the 53 samples, expressed as a six-week rolling Geometric Mean, exceed the objective for REC-1. Twenty-one of the 40 samples, expressed as a Statistical Threshold Value, exceed the objective for REC-1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Thirty-seven of the 53 samples, expressed as a six-week rolling Geometric Mean, exceed the objective for REC-1. Twenty-one of the 40 samples, expressed as a Statistical Threshold Value, exceed the objective for REC-1. This exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. The State Water Board’s Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the “ISWEBE Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use, which were adopted on August 7, 2018. Because the salinity level of this waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies Therefore, this waterbody is being considered for placement on or removal from the CWA section 303(d) List under section 3.3 or 4.3 of the Listing Policy, as applicable, using the E. Coli objective. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address bacteria. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. For E. Coli data, Listing Policy sections 3.3 and 4.3 instructs to use the binomial distribution table in sections 3.2 and 4.2, as applicable. To use the binomial table that uses a four percent exceedance frequency, the data must be collected from coastal beaches or inland surface waters from April 1 through October 31 only, and where collected from inland waters from April 1 through October 31 only, bacterial measurements must be indicative of human fecal matter, and there is substantial human contact in the waterbody.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:	The State Water Board’s Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California (the “ISWEBE Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use, which were adopted on August 7, 2018. Because the salinity level of this waterbody is equal to or less than 1 part per thousand 95 percent or more of the time, the E. coli bacteria objective applies Therefore, this waterbody is being considered for placement on or removal from the CWA section 303(d) List under section 3.3 or 4.3 of the Listing Policy, as applicable, using the E. Coli objective. In accordance with section 6.1.5.3 of the Listing Policy, data should be representative of the critical timing that the pollutant is expected to impact the waterbody. Indicator bacteria (total coliform, fecal coliform, E. coli, enterococci) populations may fluctuate substantially on a daily, seasonal, or yearly basis. Lacking constant inputs, they do not persist in the environment for a long period and effects are of relatively short duration. As a result, the historic levels of indicator bacteria in the waterbody may be a poor indicator of current risks to human health, particularly when more recent data are available to sufficiently assess the water quality standard. Additionally, water quality conditions in waterbodies may change as a result of management actions that have been implemented to address bacteria. Unrepresentative data may result in incorrectly placing or not placing a water body segment on the list, which could result in the unnecessary expenditure of public resources or missing a human health problem. Historic lines of evidence for data collected prior to 2010 were evaluated pursuant to these considerations and were not used to assess water quality standards attainment because they do not meet the temporal representation requirements of section 6.1.5.3 of the Listing Policy. For E. Coli data, Listing Policy sections 3.3 and 4.3 instructs to use the binomial distribution table in sections 3.2 and 4.2, as applicable. To use the binomial table that uses a four percent exceedance frequency, the data must be collected from coastal beaches or inland surface waters from April 1 through October 31 only, and where collected from inland waters from April 1 through October 31 only, bacterial measurements must be indicative of human fecal matter, and there is substantial human contact in the waterbody.
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194754
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	7
Number of Exceedances:	4
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 4 of the 7 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a STATISTICAL THRESHOLD VALUE (STV) of 320 cfu/100 mL not to be exceeded more than 10 percent of the time (calculated monthly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC216
Temporal Representation:	The samples were collected between the days of 2015-12-28 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	66113
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	15
Number of Exceedances:	1
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 15 samples exceed the criterion for Escherichia coli.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River and San Joaquin River Basins)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The USEPA recommended objective for single sample maximum allowable density of E. coli in freshwater designated beach areas is 235 MPN/100mL.
Guideline Reference:	Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194909
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	11
Number of Exceedances:	5
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 5 of the 11 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a STATISTICAL THRESHOLD VALUE (STV) of 320 cfu/100 mL not to be exceeded more than 10 percent of the time (calculated monthly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC213
Temporal Representation:	The samples were collected between the days of 2015-07-14 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194605
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	12
Number of Exceedances:	8
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 8 of the 12 samples exceeded the geomean water quality threshold for E. coli. This is a six week rolling geomean that is calculated weekly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a six-week rolling GEOMETRIC MEAN (GM) of Escherichia coli (E. coli) not to exceed 100 colony forming units per 100 milliliters (cfu/100 mL) (calculated weekly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC215
Temporal Representation:	The samples were collected between the days of 2015-07-14 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194557
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	9
Number of Exceedances:	9
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 9 of the 9 samples exceeded the geomean water quality threshold for E. coli. This is a six week rolling geomean that is calculated weekly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a six-week rolling GEOMETRIC MEAN (GM) of Escherichia coli (E. coli) not to exceed 100 colony forming units per 100 milliliters (cfu/100 mL) (calculated weekly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC216
Temporal Representation:	The samples were collected between the days of 2015-12-28 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194737
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	12
Number of Exceedances:	5
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 5 of the 12 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a STATISTICAL THRESHOLD VALUE (STV) of 320 cfu/100 mL not to be exceeded more than 10 percent of the time (calculated monthly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC214
Temporal Representation:	The samples were collected between the days of 2015-07-14 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194496
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	16
Number of Exceedances:	9
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 9 of the 16 samples exceeded the geomean water quality threshold for E. coli. This is a six week rolling geomean that is calculated weekly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a six-week rolling GEOMETRIC MEAN (GM) of Escherichia coli (E. coli) not to exceed 100 colony forming units per 100 milliliters (cfu/100 mL) (calculated weekly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC213
Temporal Representation:	The samples were collected between the days of 2015-07-14 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194622
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	10
Number of Exceedances:	7
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 7 of the 10 samples exceeded the Statistical Threshold Value (STV) water quality threshold for E. coli. The STV is based on a 10% exceedance rate that is calculated monthly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a STATISTICAL THRESHOLD VALUE (STV) of 320 cfu/100 mL not to be exceeded more than 10 percent of the time (calculated monthly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC215
Temporal Representation:	The samples were collected between the days of 2015-07-14 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	194604
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	16
Number of Exceedances:	11
Data and Information Type:	PATHOGEN MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed data for Littlejohns Creek to determine beneficial use support and the results are as follows: 11 of the 16 samples exceeded the geomean water quality threshold for E. coli. This is a six week rolling geomean that is calculated weekly.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The bacteria water quality objective applicable to all waters, except Lake Tahoe, where the salinity is less than 10 parts per thousand (ppth) 95 percent or more of the time is a six-week rolling GEOMETRIC MEAN (GM) of Escherichia coli (E. coli) not to exceed 100 colony forming units per 100 milliliters (cfu/100 mL) (calculated weekly).
Objective/Criterion Reference:	Inland Surface Waters, Enclosed Bays, and Estuaries Plan. Part 1: Trash Provisions; Part 2: Tribal Subsistence Beneficial Uses and Mercury Provisions; Part 3: Bacteria Provisions and Variance Policy
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site(s), station(s): 531SJC214
Temporal Representation:	The samples were collected between the days of 2015-07-14 and 2016-06-28 .
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	22125
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	16
Number of Exceedances:	5
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The San Joaquin Delta Water Quality Coalition collected 16 samples from August 2004 to September 2006. Five out of the 16 samples collected exceeded the evaluation objective.
Data Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Objective/Criterion Reference:	Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
Evaluation Guideline:	The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986).
Guideline Reference:	Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
Spatial Representation:	Samples were collected at Littlejohns Creek at Jack Tone Road.
Temporal Representation:	Sampling occurred from August 2004 to September 2006.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 127080, Indicator Bacteria Region 5      Littlejohns Creek
LOE ID:	22126
Pollutant:	Escherichia coli (E. coli)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	40
Number of Exceedances:	17
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 40 samples from March 2003 to March 2004. Seventeen out of 40 samples exceeded the evaluation objective.
Data Reference:	Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. The objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Objective/Criterion Reference:	Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
Evaluation Guideline:	The USEPA E. Coli objective of 235/100 mL in any single sample (USEPA 1986).
Guideline Reference:	Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
Spatial Representation:	Samples were collected at two locations: Littlejohns Creek at Austin Road and at Sonora Road.
Temporal Representation:	Sampling occurred from March 2003 to March 2004.
Environmental Conditions:
QAPP Information:	Monitoring was conducted in accordance with the State Water Resources Control Board¿s Quality Assurance Program Plan for the State of California¿s Surface Water Ambient Monitoring Program.
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	119222	Region 5
Littlejohns Creek

Pollutant:	Chlorpyrifos
Final Listing Decision:	Do Not Delist from 303(d) list (being addressed with action other than TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by action other than TMDL)(2018)
Revision Status	Revised
Sources:	Agriculture
Expected Attainment Date:	2026
Implementation Action Other than TMDL:	This water body segment-pollutant combination is being addressed through Basin Plan requirements established under CRWQCB-CVR resolution R5-2014-0041, and implemented through Board established Waste Discharge Requirements for agricultural discharges. The sources of chlorpyrifos to this segment have been identified as offsite movement of chlorpyrifos from chlorpyrifos applications by the agricultural dischargers regulated by the CRWQCB-CVR WDRs. The Basin Plan identifies numeric water quality objectives for diazinon and chlorpyrifos. The Basin Plan and WDRs require growers to implement management practices through the development and implementation of water quality management plans to meet water quality objectives for chlorpyrifos as soon as possible but no longer than ten years from the date of approval of the Basin Plan Amendment. These management plans are required to be developed and implemented within one year of the Basin Plan Amendment approval. Agricultural management practices to be implemented may include pest management practices, pesticide application practices, vegetation management practices and water management practices, all of which are effective in reducing offsite movement of chlorpyrifos into surface water. The Basin Plan and the Monitoring and Reporting programs in the WDRs require monitoring to determine if adequate reductions are being attained. The Basin Plan and WDRs require management practices to be iteratively improved through updates of the management plans until the water quality objectives are achieved.
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This water body - pollutant combination is being considered for placement on the CWA 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. The evidence indicates that chlorpyrifos concentrations are not attaining the applicable water quality standards, but existing pollution control requirements, under State authority, are stringent enough to implement applicable water quality standards because the impairment is being addressed by an enforceable regulatory program, other than a TMDL, that is reasonably expected to result in attainment of the water quality standards within a reasonable, specified time frame. This conclusion is based on the staff findings that: 1. The data used satisfy the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfy the data quantity requirements of section 6.1.5 of the Policy. 3. Seven of 46 water samples exceeded the chlorpyrifos criterion for aquatic life and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy 4. The sources of chlorpyrifos to this water body segment have been identified as offsite movement of chlorpyrifos from chlorpyrifos applications by the agricultural dischargers, who are regulated under enforceable Waste Discharge Requirements (WDRs). 5. In 2016, the Board adopted Resolution R5-2014-0041 establishing Basin Plan amendments that primarily address the regulation of agricultural pesticide runoff and discharges of diazinon and chlorpyrifos in the Central Valley which are implemented through Board established Waste Discharge Requirements for agricultural dischargers. The amendments established numeric water quality objectives for chlorpyrifos and a control program to ensure that the objectives will be attained within a reasonable, specified time frame. The Basin Plan and WDRs require growers to implement management practices through the development and implementation of water quality management plans to meet water quality objectives for chlorpyrifos as soon as possible but no longer than ten years from the date of approval of the Basin Plan Amendment. These management plans are required to be developed and implemented within one year of the Basin Plan Amendment approval. 6. Agricultural management practices to be implemented may include pest management practices, pesticide application practices, vegetation management practices and water management practices, all of which are effective in reducing offsite movement of chlorpyrifos into surface water. 7. The Basin Plan and the Monitoring and Reporting programs in the Boards WDRs require monitoring to determine if adequate reductions are being attained. The Basin Plan and WDRs require management practices to be iteratively improved through updates of the management plans until the water quality objectives are attained. 8. 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 removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:	The Basin Plan and WDRs require growers to implement management practices through the development and implementation of water quality management plans to meet water quality objectives for chlorpyrifos as soon as possible but no longer than ten years from the date of approval of the Basin Plan Amendment. These management plans are required to be developed and implemented within one year of the Basin Plan Amendment approval. 6. Agricultural management practices to be implemented may include pest management practices, pesticide application practices, vegetation management practices and water management practices, all of which are effective in reducing offsite movement of chlorpyrifos into surface water. 7. The Basin Plan and the Monitoring and Reporting programs in the Boards WDRs require monitoring to determine if adequate reductions are being attained. The Basin Plan and WDRs require management practices to be iteratively improved through updates of the management plans until the water quality objectives are attained. 8. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 119222, Chlorpyrifos Region 5      Littlejohns Creek
LOE ID:	66098
Pollutant:	Chlorpyrifos
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	4
Number of Exceedances:	4
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 4 of 4 samples exceed the criterion for Chlorpyrifos.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000).
Guideline Reference:	Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 2 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 119222, Chlorpyrifos Region 5      Littlejohns Creek
LOE ID:	187469
Pollutant:	Chlorpyrifos
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	29
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 2 of 29 samples exceeded the water quality threshold for Chlorpyrifos.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (4 day average)(Siepmann and Finlayson 2000).
Guideline Reference:	Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2015-08-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 119222, Chlorpyrifos Region 5      Littlejohns Creek
LOE ID:	22133
Pollutant:	Chlorpyrifos
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	13
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Sixteen water samples were collected from Littlejohns Creek from August 2004 through September 2006, representing thirteen 4-day average concentrations and thirteen 1-hour average concentrations. One of the thirteen 4-day average concentrations exceeded the 4-day maximum concentration guideline of 0.015 ug/L. One of the thirteen 1-hour average concentrations exceeded the maximum 1-hour concentration of 0.025 ug/L. Two water samples had method detection limits (0.0254) higher than the CDFG Hazard Assessment Criteria (0.015 ug/L) and 1 sample had a 'not quantified' value. Therefore, the 3 samples were not included in this analysis.
Data Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007). All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Objective/Criterion Reference:	Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Evaluation Guideline:	California Department of Fish and Game (CDFG) Hazard Assessment Criteria - 0.015 ug/L 4-day average and 0.025 ug/L 1-hour average (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Guideline Reference:	Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game
Spatial Representation:	Samples were collected from Littlejohns Creek at Jack Tone Road.
Temporal Representation:	Samples were collected at monthly interval from August 2004 through September 2006.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):

DECISION ID	128967	Region 5
Littlejohns Creek

Pollutant:	Aldicarb
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66076 has been replaced by LOE 221562 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128967, Aldicarb Region 5      Littlejohns Creek
LOE ID:	66077
Pollutant:	Aldicarb
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Aldicarb.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The Department of Public Health archived advisory level for aldicarb is 7 ug/L.
Guideline Reference:	CDPH Archived Advisory Levels for Drinking Water. Archived Advisory Levels are currently considered Notification Levels.
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 128967, Aldicarb Region 5      Littlejohns Creek
LOE ID:	221562
Pollutant:	Aldicarb
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Aldicarb.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Aldicarb is the USEPA Aquatic Life Benchmark of 0.46 ug/L for a fish (chronic).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	123175	Region 5
Littlejohns Creek

Pollutant:	Alkalinity as CaCO3
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:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 123175, Alkalinity as CaCO3 Region 5      Littlejohns Creek
LOE ID:	207442
Pollutant:	Alkalinity as CaCO3
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Alkalinity as CaCO3.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Alkalinity as CaCO3 levels were assessed for the protection of freshwater aquatic life by comparison to the Evaluation Guideline value of 20,000 ug/L (4 day average)(National Recommended Water Quality Criteria, 2009).
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	128957	Region 5
Littlejohns Creek

Pollutant:	Atrazine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66080 has been replaced by LOE 221442 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128957, Atrazine Region 5      Littlejohns Creek
LOE ID:	66086
Pollutant:	Atrazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Atrazine.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for atrazine is 1 ug/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 128957, Atrazine Region 5      Littlejohns Creek
LOE ID:	221442
Pollutant:	Atrazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Atrazine.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Atrazine is the USEPA Aquatic Life Benchmark of <1 ug/L for a nonvascular plant (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	131558	Region 5
Littlejohns Creek

Pollutant:	Benthic Community Effects
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:	Benthic Community Effects are being considered for placement on the CWA section 303(d) List under sections 3.9 of the Listing Policy. Under section 3.9, additional lines of evidence (LOEs) associating the Benthic Community Effects decision with a water or sediment concentration of pollutants other than benthic-macroinvertebrate bioassessment or habitat assessment LOEs are necessary to place a water body on the 303(d) List for Benthic Community Effects. One line(s) of evidence evaluating benthic-macroinvertebrate bioassessment data is/are available in the administrative record to assess this indicator. One of one benthic-macroinvertebrate samples exceed the California Stream Condition Index (CSCI) impairment threshold. One sample was a same day replicate. However, a minimum of two benthic-macroinvertebrate samples are needed to assess listing status. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing Benthic Community Effects in this waterbody segment on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of one benthic-macroinvertebrate bioassessment samples had CSCI scores below 0.79. The available information is insufficient to determine whether the waterbody/pollutant combination should be placed on the 303(d) List of impaired waters at this time. 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 131558, Benthic Community Effects Region 5      Littlejohns Creek
LOE ID:	232263
Pollutant:	Benthic-Macroinvertebrate Bioassessments
LOE Subgroup:	Population/Community Degradation
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	2
Number of Exceedances:	2
Data and Information Type:	Benthic macroinvertebrate surveys
Data Used to Assess Water Quality:	Water Board staff assessed data for 531PS0365 to determine beneficial use support and the results are as follows: 2 of 2 samples exceeded the threshold. CSCI scores were from 0.470254944 to 0.470911019.
Data Reference:	California Stream Condition Index (CSCI) Scores for the 2020 Integrated Report for Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. Region 5 Basin Plan
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The California Stream Condition Index (CSCI) is a biological scoring tool that helps aquatic resource managers translate complex data about benthic macroinvertebrates found living in a stream into an overall measure of stream health. The CSCI score is calculated by comparing the expected condition with actual (observed) results (Rehn, A.C. et al., 2015). CSCI scores range from 0 (highly degraded) to greater than 1 (equivalent to reference). CSCI scoring of biological condition are as follows (per the scientific paper supporting the development of the CSCI scoring tool): greater than or equal to 0.92 = likely intact condition, 0.91 to 0.80 = possibly altered condition, 0.79 to 0.63 = likely altered condition, less than or equal to 0.62 = very likely altered condition. Sites with scores below 0.79 are considered to have exceeded the water quality objective for the aquatic life beneficial use.
Guideline Reference:	Bioassessment in complex environments: designing an index for consistent meaning in different settings
Spatial Representation:	Samples were collected from station 531PS0365.
Temporal Representation:	Samples were collected from 9/16/2010 to 9/16/2010.
Environmental Conditions:
QAPP Information:	Data collected following SWAMP QA protocols.
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	125551	Region 5
Littlejohns Creek

Pollutant:	Bifenthrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Zero of the zero samples exceed the evaluation guideline. LOE 66088 has been replaced by LOE 215045 due to a reassessment of data using a U.S. EPA aquatic life benchmark. 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the zero samples exceed the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 125551, Bifenthrin Region 5      Littlejohns Creek
LOE ID:	215045
Pollutant:	Bifenthrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Fifteen samples were collected and analyzed for Bifenthrin. The reporting limit is greater than the evaluation guideline value for all 15 samples; therefore, the data could not be evaluated for exceedances. Therefore, 0 samples, 0 exceedances.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The chronic concentration goal for Bifenthrin is 0.1 ng/L (expressed as a 4-day average).  If the freely dissolved concentrations of Bifenthrin were reported or could be calculated then these values were used for this assessment.  In the absence of freely dissolved concentrations, total concentrations were used.
Guideline Reference:	Water Quality Criteria Report for Bifenthrin
Guideline Reference:	Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	119221	Region 5
Littlejohns Creek

Pollutant:	Chloride
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 1 line of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 8 available concentrations exceeded the water quality objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. Table 3.1 of the listing policy recommends listing if a sample size of 8 has 2 or more samples that exceed the evaluation criteria. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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:	This decision was made by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 119221, Chloride Region 5      Littlejohns Creek
LOE ID:	21132
Pollutant:	Chloride
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	8
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the 8 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Chloride.
Data Reference:	San Joaquin River SWAMP Monitoring Data - Eastside Basin
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	Chloride levels should not exceed 250 mg/L (Department of Public Health Secondary MCL).
Guideline Reference:	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Spatial Representation:	Samples were collected at Littlejohns Creek at Austin Road. Samples were collected at Littlejohn's Creek at Sonora Road.
Temporal Representation:	The samples were collected from March 18 2003 to June 30 2003.
Environmental Conditions:
QAPP Information:	Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 119221, Chloride Region 5      Littlejohns Creek
LOE ID:	187294
Pollutant:	Chloride
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Chloride.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary Maximum Contaminant Level for chloride incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 250 mg/L
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	119223	Region 5
Littlejohns Creek

Pollutant:	Copper
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. One of 22 samples exceed the criteria for COLD and zero of 22 samples exceed the water quality objective for MUN. 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 CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of 22 samples exceed the criteria for COLD and zero of 22 samples exceed the water quality objective for MUN 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.

Line of Evidence (LOE) for Decision ID 119223, Copper Region 5      Littlejohns Creek
LOE ID:	66099
Pollutant:	Copper
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for Copper.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California secondary maximum contaminant level for copper is 1.0 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR Title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ 26 Mile Rd - 531LCATMR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 119223, Copper Region 5      Littlejohns Creek
LOE ID:	187906
Pollutant:	Copper
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	22
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 22 samples exceeded the water quality threshold for Copper.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	California Toxics Rule (CTR) lists criterion continuous concentrations to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion.
Objective/Criterion Reference:	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
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2015-09-15
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 119223, Copper Region 5      Littlejohns Creek
LOE ID:	187678
Pollutant:	Copper
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceeded the water quality threshold for Copper.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California Secondary Maximum Contaminant Level for copper incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 1.0 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2015-09-15
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 119223, Copper Region 5      Littlejohns Creek
LOE ID:	187817
Pollutant:	Copper
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	17
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 17 samples exceeded the water quality threshold for Copper.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California Secondary Maximum Contaminant Level for copper incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 1.0 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2014-09-16
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition

DECISION ID	125553	Region 5
Littlejohns Creek

Pollutant:	Cyfluthrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Previously considered water quality data was reevaluated according to new guidelines as part of this assessment. Line of evidence #66101 was replaced by #215046. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 125553, Cyfluthrin Region 5      Littlejohns Creek
LOE ID:	215046
Pollutant:	Cyfluthrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cyfluthrin, total. Fifteen samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The chronic concentration goal for Cyfluthrin is 0.2 ng/L (expressed as a 4-day average).  If the freely dissolved concentrations of Cyfluthrin were reported or could be calculated then these values were used for this assessment.  In the absence of freely dissolved concentrations, total concentrations were used.
Guideline Reference:	Water Quality Criteria Report for Bifenthrin
Guideline Reference:	Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	125554	Region 5
Littlejohns Creek

Pollutant:	Cyhalothrin, Lambda
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66102 has been replaced by LOE 215047 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 125554, Cyhalothrin, Lambda Region 5      Littlejohns Creek
LOE ID:	215047
Pollutant:	Cyhalothrin, Lambda
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cyhalothrin, lambda. Fifteen samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The chronic concentration goal for Lambda-cyhalothrin is 0.3 ng/L (expressed as a 4-day average).  If the freely dissolved concentrations of Lambda-cyhalothrin were reported or could be calculated then these values were used for this assessment.  In the absence of freely dissolved concentrations, total concentrations were used.
Guideline Reference:	Water Quality Criteria Report for Lambda-cyhalothrin
Guideline Reference:	Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	125552	Region 5
Littlejohns Creek

Pollutant:	Cypermethrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Previously considered water quality data was reevaluated according to new guidelines as part of this assessment. Line of evidence #66103 was replaced by #215060. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 125552, Cypermethrin Region 5      Littlejohns Creek
LOE ID:	215060
Pollutant:	Cypermethrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cypermethrin, total. Fifteen samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The chronic concentration goal for Cypermethrin is 0.3 ng/L (expressed as a 4-day average).  If the freely dissolved concentrations of Cypermethrin were reported or could be calculated then these values were used for this assessment.  In the absence of freely dissolved concentrations, total concentrations were used.
Guideline Reference:	Water Quality Criteria Report for Cypermethrin
Guideline Reference:	Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	119224	Region 5
Littlejohns Creek

Pollutant:	Diazinon
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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 is available in the administrative record to assess this pollutant. One of the fifteen 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of the fifteen samples exceed the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	This decision was completed by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 119224, Diazinon Region 5      Littlejohns Creek
LOE ID:	188604
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	8
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Diazinon.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The freshwater chronic value for diazinon is 0.1 ug/L (4 day average)(Finlayson, 2004).
Guideline Reference:	Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005).
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2013-02-21
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 119224, Diazinon Region 5      Littlejohns Creek
LOE ID:	66104
Pollutant:	Diazinon
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 15 samples exceed the criterion for Diazinon.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The freshwater chronic criterion value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004).
Guideline Reference:	Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128958	Region 5
Littlejohns Creek

Pollutant:	Dicofol
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66105 has been replaced by LOE 221683 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128958, Dicofol Region 5      Littlejohns Creek
LOE ID:	221683
Pollutant:	Dicofol
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Dicofol.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Dicofol is the USEPA Aquatic Life Benchmark of 4.4 ug/L for a fish (chronic).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128965	Region 5
Littlejohns Creek

Pollutant:	Dimethoate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Previously considered water quality data was reevaluated according to new guidelines as part of this assessment. Line of evidence #66108 was replaced by #221643. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128965, Dimethoate Region 5      Littlejohns Creek
LOE ID:	221643
Pollutant:	Dimethoate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Dimethoate.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Dimethoate is the USEPA Aquatic Life Benchmark of 0.5 ug/L for a invertebrate (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	119225	Region 5
Littlejohns Creek

Pollutant:	Diuron
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. One of 7 samples for Warm Freshwater Habitat and 0 of 8 for Cold Freshwater Habitat 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of 7 samples for Warm Freshwater Habitat and 0 of 8 Cold Freshwater Habitat samples exceeded the narrative toxicity 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:	This decision was made by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 119225, Diuron Region 5      Littlejohns Creek
LOE ID:	22392
Pollutant:	Diuron
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	2
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Four water samples were collected at Littlejohns Creek during two storms. For samples that were collected within less than a 96-hour period of time, the mean was taken of the samples and compared to the maximum concentration (EC50) for diuron.1 of 2 concentrations exceeded the maximum concentration of 1.3 ug/L.
Data Reference:	Zipped file of Central Valley Waterways Pesticide TMDL monitoring data spreadsheets and reports
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007).All waters shall be maintained free of toxic substances that in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The Board will use the best available technical information to evaluate compliance with the narrative objectives. Other available technical information on the pesticide (such as Lowest Observed Effect Concentrations and No Observed Effect Levels), the water bodies and organisms involved will be evaluated to determine if lower concentrations are required to meet the narrative objectives (CRWQCB, 2006). The 96 hour EC50 for the most sensitive species is 1.3 ug/L (ECOTOX, 2008).
Guideline Reference:	Ecotox database
Spatial Representation:	Samples collected from Littlejohns Creek at Jack Tone Road.
Temporal Representation:	Samples were collected daily for two days during two storms on January 14 and15, 2006, and on February 28 and March 1, 2006.
Environmental Conditions:
QAPP Information:	Data quality: Excellent. Calanchini, H. 2006. Quality Assurance Project Plan, Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. John Muir Institute of the Environment, U.C. Davis. Davis, CA.
QAPP Information Reference(s):	Quality Assurance Project Plan. Sacramento and San Joaquin River Basins and Sacramento-San Joaquin Delta TMDL Monitoring for Organophosphorus Pesticides and Other Pesticides Identified as Posing a High Risk to Surface Waters. Final. SWAMP Project ID 02TM5001 (Revision 0.0). John Muir Institute of the Environment, U.C. Davis. Davis, CA. January 26, 2006
Line of Evidence (LOE) for Decision ID 119225, Diuron Region 5      Littlejohns Creek
LOE ID:	22393
Pollutant:	Diuron
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	5
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Five water samples were collected monthly at Littlejohns Creek from May through September 2006. Zero of 5 concentrations exceeded the maximum concentration of 1.3 ug/L.
Data Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses (CVRWQCB, 2007). All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life (CVRWQCB, 2007).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The Board will use the best available technical information to evaluate compliance with the narrative objectives. Other available technical information on the pesticide (such as Lowest Observed Effect Concentrations and No Observed Effect Levels), the water bodies and organisms involved will be evaluated to determine if lower concentrations are required to meet the narrative objectives (CRWQCB, 2006). The 96-hour EC50 for the most sensitive species is 1.3 ug/L (ECOTOX, 2008).
Guideline Reference:	Ecotox database
Spatial Representation:	Samples collected from Littlejohns Creek at Jack Tone Road.
Temporal Representation:	Samples were collected monthly from May through September 2006.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 119225, Diuron Region 5      Littlejohns Creek
LOE ID:	188969
Pollutant:	Diuron
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	8
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Diuron.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Aquatic life should not be affected unacceptably if the 4-day average concentration of diuron does not exceed 1.3 ug/L (UC Davis Aquatic Life Criteria).
Guideline Reference:	Aquatic life water quality criteria derived via the UC Davis method: III. Diuron. Reviews of Environmental Contamination and Toxicology 216:105-141.
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2014-11-18 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition

DECISION ID	128959	Region 5
Littlejohns Creek

Pollutant:	Glyphosate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66114 has been replaced by LOE 221939 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128959, Glyphosate Region 5      Littlejohns Creek
LOE ID:	221939
Pollutant:	Glyphosate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Glyphosate.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Glyphosate is the USEPA Aquatic Life Benchmark of 11900 ug/L for a vascular plant (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 128959, Glyphosate Region 5      Littlejohns Creek
LOE ID:	66115
Pollutant:	Glyphosate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Glyphosate.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for Glyphosate is 700 ug/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128960	Region 5
Littlejohns Creek

Pollutant:	Linuron
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66116 has been replaced by LOE 221841 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128960, Linuron Region 5      Littlejohns Creek
LOE ID:	221841
Pollutant:	Linuron
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Linuron. Although a total of 15 samples were collected, 15 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Linuron is the USEPA Aquatic Life Benchmark of 0.09 ug/L for a invertebrate (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR).
Temporal Representation:	Date for this waterbody was collected over the date range 2007-02-11 to 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128964	Region 5
Littlejohns Creek

Pollutant:	Methidathion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66120 has been replaced by LOE 221822 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128964, Methidathion Region 5      Littlejohns Creek
LOE ID:	221822
Pollutant:	Methidathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Methidathion.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Methidathion is the USEPA Aquatic Life Benchmark of 0.66 ug/L for a invertebrate (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128963	Region 5
Littlejohns Creek

Pollutant:	Methiocarb
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66121 has been replaced by LOE 221763 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128963, Methiocarb Region 5      Littlejohns Creek
LOE ID:	221763
Pollutant:	Methiocarb
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Methiocarb.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Methiocarb is the USEPA Aquatic Life Benchmark of 2.75 ug/L for a invertebrate (chronic).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128961	Region 5
Littlejohns Creek

Pollutant:	Molinate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66129 has been replaced by LOE 221913 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128961, Molinate Region 5      Littlejohns Creek
LOE ID:	66130
Pollutant:	Molinate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Molinate.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for Molinate is 20 ug/L .
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 128961, Molinate Region 5      Littlejohns Creek
LOE ID:	221913
Pollutant:	Molinate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Molinate.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The California Department of Fish and Wildlife hazard assessment instantaneous criterion (1-hour average) for the protection of aquatic life for Molinate is 13 ug/L.
Guideline Reference:	Hazard Assessment of the Rice Herbicides Molinate and Thiobencarb to Aquatic Organisms in the Sacramento River System. Administrative Report 90-1. California Department of Fish and Game, Environmental Services Division
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	119226	Region 5
Littlejohns Creek

Pollutant:	Nitrate/Nitrite (Nitrite + Nitrate as N)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 119226, Nitrate/Nitrite (Nitrite + Nitrate as N) Region 5      Littlejohns Creek
LOE ID:	192345
Pollutant:	Nitrate/Nitrite (Nitrite + Nitrate as N)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrate + Nitrite as N.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Maximum Contaminant Level for nitrate + nitrite (as N) incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 10 mg/L (California Code of Regulations, Title 22).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	127087	Region 5
Littlejohns Creek

Pollutant:	Nitrogen, Nitrite
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 127087, Nitrogen, Nitrite Region 5      Littlejohns Creek
LOE ID:	192589
Pollutant:	Nitrogen, Nitrite
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Nitrite as N.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Primary Maximum Contaminant Level for Nitrite as N incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 1000 ug/L .
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 127087, Nitrogen, Nitrite Region 5      Littlejohns Creek
LOE ID:	66134
Pollutant:	Nitrogen, Nitrite
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Nitrite as N.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for nitrite (as N) is 1 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128969	Region 5
Littlejohns Creek

Pollutant:	Paraquat
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Previously considered water quality data was reevaluated according to new guidelines as part of this assessment. Line of evidence #66135 was replaced by #222289. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128969, Paraquat Region 5      Littlejohns Creek
LOE ID:	222289
Pollutant:	Paraquat
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Paraquat. Although a total of 15 samples were collected, 14 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Paraquat is the USEPA Aquatic Life Benchmark of 0.396 ug/L for a nonvascular plant (acute) for Paraquat dichloride.
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR).
Temporal Representation:	Data for this waterbody was collected over the date range 2007-02-11 to 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	130410	Region 5
Littlejohns Creek

Pollutant:	Permethrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Previously assessed data was re-evaluated according to new guidelines. Line of evidence #66136 was replaced by #215061. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 130410, Permethrin Region 5      Littlejohns Creek
LOE ID:	215061
Pollutant:	Permethrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Permethrin, Total. Fifteen samples were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The chronic concentration goal for Permethrin is 1 ng/L (expressed as a 4-day average).  If the freely dissolved concentrations of Permethrin were reported or could be calculated then these values were used for this assessment.  In the absence of freely dissolved concentrations, total concentrations were used.
Guideline Reference:	Water Quality Criteria Report for Permethrin
Guideline Reference:	Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128966	Region 5
Littlejohns Creek

Pollutant:	Phorate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66137 has been replaced by LOE 222308 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128966, Phorate Region 5      Littlejohns Creek
LOE ID:	222308
Pollutant:	Phorate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Phorate.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Phorate is the USEPA Aquatic Life Benchmark of 0.21 ug/L for a invertebrate (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128968	Region 5
Littlejohns Creek

Pollutant:	Phosmet
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available LOE 66138 has been replaced by LOE 222361 due to a reassessment of data using a U.S. EPA aquatic life benchmark
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 128968, Phosmet Region 5      Littlejohns Creek
LOE ID:	222361
Pollutant:	Phosmet
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Phosmet.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Phosmet is the USEPA Aquatic Life Benchmark of 0.8 ug/L for a invertebrate (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	128962	Region 5
Littlejohns Creek

Pollutant:	Simazine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. LOE 66141 has been replaced by LOE 222449 due to a reassessment of data using a U.S. EPA aquatic life benchmark.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 128962, Simazine Region 5      Littlejohns Creek
LOE ID:	66142
Pollutant:	Simazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Simazine.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for Simazine is 4 ug/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 128962, Simazine Region 5      Littlejohns Creek
LOE ID:	222449
Pollutant:	Simazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Simazine.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Simazine is the USEPA Aquatic Life Benchmark of 6 ug/L for a nonvascular plant (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	126769	Region 5
Littlejohns Creek

Pollutant:	Specific Conductivity
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Seven lines of evidence are available in the administrative record to assess this pollutant. Zero of the 180 samples, reported as a total concentration or with the fraction not reported, exceeded the water quality objective for MUN. 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 180 samples, reported as a total concentration or with the fraction not reported, exceeded the water quality objective for MUN, 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:	This decision was made by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	66110
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	31
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 31 samples exceed the criterion for Conductivity(Us).
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California secondary maximum contaminant levels for electrical conductivity provide a range of values including a recommended level (900 uS/cm), an upper level (1,600 uS/cm) and a short-term level (2,200 uS/cm). The recommended level of 900 uS/cm was used as it is protective of all drinking water uses.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR Title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ 26 Mile Rd - 531LCATMR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	212313
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for SpecificConductivity.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin for specific conductance is 900 uS/cm.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	230026
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	17
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 17 samples exceeded the water quality threshold for SpecificConductivity.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin for specific conductance is 900 uS/cm.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	230029
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceeded the water quality threshold for SpecificConductivity.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin for specific conductance is 900 uS/cm.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	230025
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	29
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 29 samples exceeded the water quality threshold for SpecificConductivity.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin for specific conductance is 900 uS/cm.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	229796
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	29
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 29 samples exceeded the water quality threshold for SpecificConductivity.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin for specific conductance is 900 uS/cm.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 126769, Specific Conductivity Region 5      Littlejohns Creek
LOE ID:	230120
Pollutant:	Specific Conductivity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	51
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 51 samples exceeded the water quality threshold for SpecificConductivity.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California Secondary MCL that is incorporated by reference in the Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin for specific conductance is 900 uS/cm.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition

DECISION ID	119227	Region 5
Littlejohns Creek

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:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 119227, Sulfates Region 5      Littlejohns Creek
LOE ID:	193716
Pollutant:	Sulfates
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Sulfate.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The California Secondary Maximum Contaminant Level for sulfate incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 250 mg/L.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	123174	Region 5
Littlejohns Creek

Pollutant:	Temperature, water
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. 19 lines of evidence are available in the administrative record to assess this pollutant. Pursuant to section 6.1.5.9 of the Listing Policy, this assessment utilized the upper limit of the optimal temperature range for rainbow trout for growth and completion of most life stages to interpret the narrative water quality objective for temperature. 76 of 157 samples exceeded the evaluation guideline for COLD. 56 of 152 samples exceeded the evaluation guideline for Fish Migration and Fish Spawning. However, the available data are insufficient to satisfy the Listing Policy requirements for spatial and temporal representation (sections 6.1.5.2 and 6.1.5.3). The surface water grab samples collected did not provide sufficient temporal and spatial representation to determine if temperature conditions experienced by aquatic life were within the optimal temperature range throughout the entire water column or the length of time temperature conditions may have exceeded the optimal temperature range. Available information for this waterbody-pollutant combination is insufficient to determine whether the aquatic beneficial use is supported. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available for this Integrated Report cycle indicating that standards are not met. However, the exceedances of the evaluation guideline indicate that beneficial uses may be threatened. This decision will be reevaluated in the next Integrated Report cycle as more data and information become available. Additional data and information may include information demonstrating that sample location(s) are representative of conditions throughout the waterbody, data from additional sampling locations, continuous monitoring data collected in the waterbody, waterbody-specific information on sensitive resident species, their life stage time frames, and the appropriate temperature thresholds necessary to support each life stage.
Regional Board Decision Recommendation:	This decision was made by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.

Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230139
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Spawning
Number of Samples:	23
Number of Exceedances:	14
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 14 of 23 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	212769
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	213100
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Spawning
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230829
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Migration
Number of Samples:	51
Number of Exceedances:	16
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 16 of 51 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230706
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Migration
Number of Samples:	30
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 10 of 30 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230571
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Migration
Number of Samples:	23
Number of Exceedances:	14
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 14 of 23 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230373
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Migration
Number of Samples:	30
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 10 of 30 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230707
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Migration
Number of Samples:	17
Number of Exceedances:	6
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 6 of 17 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230261
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Spawning
Number of Samples:	30
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 10 of 30 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230140
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Spawning
Number of Samples:	30
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 10 of 30 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230336
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Spawning
Number of Samples:	51
Number of Exceedances:	16
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 16 of 51 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230828
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	30
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 10 of 30 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230470
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	17
Number of Exceedances:	6
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 6 of 17 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230297
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	51
Number of Exceedances:	16
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 16 of 51 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230488
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	23
Number of Exceedances:	14
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 14 of 23 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230471
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	30
Number of Exceedances:	10
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 10 of 30 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	230179
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Spawning
Number of Samples:	17
Number of Exceedances:	6
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 6 of 17 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	66143
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	35
Number of Exceedances:	20
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 20 of 35 samples exceed the criterion for Water Temperature.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Juoaquin River Basin Plans).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California (1976)
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ 26 Mile Rd - 531LCATMR]
Temporal Representation:	Data was collected over the time period 2/11/2007-7/31/2010.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 123174, Temperature, water Region 5      Littlejohns Creek
LOE ID:	212661
Pollutant:	Temperature, water
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Not Recorded
Beneficial Use:	Fish Migration
Number of Samples:	1
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the water quality threshold for Temperature.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129).
Guideline Reference:	Inland Fishes of California
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	128970	Region 5
Littlejohns Creek

Pollutant:	Thiobencarb
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:	Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available.
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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:

Line of Evidence (LOE) for Decision ID 128970, Thiobencarb Region 5      Littlejohns Creek
LOE ID:	222604
Pollutant:	Thiobencarb
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed ILRP_SJCDWQC data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for Thiobencarb.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins).
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:	The evaluation guideline for Thiobencarb is the USEPA Aquatic Life Benchmark of 1 ug/L for a invertebrate (acute).
Guideline Reference:	OPP Aquatic Life Benchmarks
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2007-02-11 and 2008-09-16
Environmental Conditions:
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	131139	Region 5
Littlejohns Creek

Pollutant:	pH
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 CWA 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. Fifteen lines of evidence are available in the administrative record to assess this pollutant. Six of the 143 samples exceeded the OBJECTIVE for COLD, REC-1, and REC-2. 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Six of the 143 samples exceeded the OBJECTIVE for COLD, REC-1, and REC-2, 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:	This decision was made by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228892
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228864
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228335
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Non-Contact Recreation
Number of Samples:	28
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 28 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	229167
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	27
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 27 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228830
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228657
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	51
Number of Exceedances:	4
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 4 of 51 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	229396
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	51
Number of Exceedances:	4
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 4 of 51 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	229172
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	27
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 27 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	229171
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228947
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	28
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 28 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228333
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Water Contact Recreation
Number of Samples:	28
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 28 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228688
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Non-Contact Recreation
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228334
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Non-Contact Recreation
Number of Samples:	51
Number of Exceedances:	4
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 4 of 51 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	229199
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Non-Contact Recreation
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 131139, pH Region 5      Littlejohns Creek
LOE ID:	228689
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Non-Contact Recreation
Number of Samples:	27
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 27 samples exceeded the water quality threshold for pH.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program

DECISION ID	123172	Region 5
Littlejohns Creek

Pollutant:	Oxygen, Dissolved
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2018)
Revision Status	Revised
Sources:	A Source Unknown
Expected TMDL Completion Date:	2035
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Fourteen lines of evidence are available in the administrative record to assess this pollutant. Eight lines of evidence are available to assess for aquatic life. Six lines of evidence are available to assess for Fish Spawning (SPWN). Sixty-eight of the 168 samples exceed the objective for aquatic life. Sixty-six of the 135 samples exceed the objective for SPWN. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Sixty-eight of the 168 samples exceed the objective for aquatic life. Sixty-six of the 135 samples exceed the objective for SPWN. This exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should 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.

Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	208445
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	26
Number of Exceedances:	16
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 16 of 26 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	207959
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	50
Number of Exceedances:	24
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 24 of 50 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	207917
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	12
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 2 of 12 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	208730
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	27
Number of Exceedances:	14
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 14 of 27 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	207960
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	207887
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	19
Number of Exceedances:	9
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 9 of 19 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	209051
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Fish Spawning
Number of Samples:	19
Number of Exceedances:	9
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 9 of 19 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC215)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	208872
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	50
Number of Exceedances:	24
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed San Joaquin County Delta Water Quality Coalition data for Littlejohns Creek to determine beneficial use support and results are as follows: 24 of 50 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Sediment, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531XLCAJR)
Temporal Representation:	The samples were collected between the dates of 2010-09-07 and 2016-02-18
Environmental Conditions:
QAPP Information:	Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2010. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0) ., Prepared by Michael L. Johnson LLC for the Irrigated Lands Program. 2015. Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0) ., Michael L. Johnson LLC. 2015. Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition .
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 2.0)
QAPP Information Reference(s):	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition (Revision 3.0)
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring By the San Joaquin County & Delta Water Quality Coalition
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	207886
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	12
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 2 of 12 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC216)
Temporal Representation:	The samples were collected between the dates of 2015-12-28 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	208527
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP Perennial Stream Surveys data for Littlejohns Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531PS0365)
Temporal Representation:	The samples were collected between the dates of 2010-09-16 and 2010-09-16
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	208421
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	27
Number of Exceedances:	14
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 14 of 27 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC213)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	208420
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	26
Number of Exceedances:	16
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed SWAMP RWB5 Monitoring data for Littlejohns Creek to determine beneficial use support and results are as follows: 16 of 26 samples exceeded the water quality threshold for Oxygen, Dissolved.
Data Reference:	Field, Habitat, Toxicity, Water data for the 2020/2022 integrated report in Region 5.
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	The samples were collected at 1 monitoring site (531SJC214)
Temporal Representation:	The samples were collected between the dates of 2015-07-14 and 2016-06-28
Environmental Conditions:
QAPP Information:	SWAMP QAPrP 2008
QAPP Information Reference(s):	Quality Assurance Program Plans, Quality Assurance Project Plans, and Standard Operating Procedures for the SWAMP program
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	22123
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	18
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Eighteen samples were taken from Littlejohns Creek between 2004 and 2006. One of the eighteen samples fell below the Water Quality Objective for minimum dissolved oxygen content in surface water.
Data Reference:	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	From the Sacramento/San Joaquin River Basin Plan the (WARM) Warm Freshwater Habitat is a Minimum Dissolved Oxygen content of 5mg/L.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Jack Tone Road in San Joaquin County.
Temporal Representation:	Samples were collected between August 2004 and September 2006. Samples were collected at bi-monthly and monthly intervals.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 123172, Oxygen, Dissolved Region 5      Littlejohns Creek
LOE ID:	22124
Pollutant:	Oxygen, Dissolved
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Fifteen samples were taken from Littlejohns Creek between 2003 and 2004. None of the fifteen samples fell below the Water Quality Objective for minimum dissolved oxygen content in surface water.
Data Reference:	Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	From the Sacramento/San Joaquin River Basin Plan the (WARM) Warm Freshwater Habitat criterion is a Minimum Dissolved Oxygen content of 5mg/L.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road in San Joaquin County.
Temporal Representation:	Samples were collected between March 2003 and March 2004. Samples were collected at bi-monthly and monthly intervals.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
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	73696	Region 5
Littlejohns Creek

Pollutant:	Toxicity
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under section 4.1 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. Six of 42 water samples exhibited significant toxicity. Two of 12 sediment samples exhibited significant toxicity. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of removing this water segment-pollutant combination from 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. Six of 42 water samples exhibited significant toxicity. Two of 12 sediment samples exhibited significant toxicity. This exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list. The readily available data and information is sufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 73696, Toxicity Region 5      Littlejohns Creek
LOE ID:	66146
Pollutant:	Toxicity
LOE Subgroup:	Toxicity
Matrix:	Water
Fraction:	None
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	42
Number of Exceedances:	6
Data and Information Type:	TOXICITY TESTING
Data Used to Assess Water Quality:	Forty-two samples were collected to evaluate water toxicity. Six of the samples exhibited significant toxicity to Selenastrum capricornutum (5 samples) and Pimephales promelas (1 sample). The toxicity tests included survival of Ceriodaphnia dubia, total cell count of Selenastrum capricornutum and survival of Pimephales promelas. One sample can have multiple toxicity test results but will be counted only once.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	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. Region 5 Basin Plan.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. This data set reports a simple pass/fail (Yes/NO) code to report toxicity that is equivalent to the SWAMP SL code.
Guideline Reference:	Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013
Spatial Representation:	The samples were collected at Littlejohns Creek at Jack Tone Rd and Littlejohns Creek at Escalon Bellota Road.
Temporal Representation:	The samples were collected from August 2004 to August 2010.
Environmental Conditions:
QAPP Information:	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 73696, Toxicity Region 5      Littlejohns Creek
LOE ID:	59275
Pollutant:	Sediment Toxicity
LOE Subgroup:	Toxicity
Matrix:	Sediment
Fraction:	None
Beneficial Use:	Warm Freshwater Habitat
Number of Samples:	12
Number of Exceedances:	2
Data and Information Type:	TOXICITY TESTING
Data Used to Assess Water Quality:	Twelve samples were collected to evaluate sediment toxicity. Two of the samples exhibited significant toxicity. The toxicity tests included survival of Hyalella azteca. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided).
Data Reference:	Data for Various Pollutants in Sacramento Valley Water Quality Coalition, 2005-2009.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	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. Region 5 Basin Plan.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted using the significant effect code: S equals significant, SG equals significantly greater and SL equals significantly lower. If a sample has any one of these codes, it will be considered an exceedance.
Guideline Reference:	Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064
Spatial Representation:	The samples were collected at Littlejohns Creek at Jack Tone Rd.
Temporal Representation:	The samples were collected from September 2004 and to September 2010.
Environmental Conditions:
QAPP Information:	Quality Assurance Project Plan For Monitoring By The San Joaquin County & Delta Water Quality Coalition.
QAPP Information Reference(s):	Quality Assurance Project Plan for Sacramento Valley Water Quality Coalition.

DECISION ID	73508	Region 5
Littlejohns Creek

Pollutant:	Arsenic
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Four lines of evidence are available in the administrative record to assess this pollutant. None of 31 available water sample results exceed the water quality objective for either the Cold Freshwater Habitat 0r Municipal and Domestic Supply beneficial uses. 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. None of 31 available water sample results exceed the water quality objective for either the Cold Freshwater Habitat 0r Municipal and Domestic Supply beneficial uses. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is sufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 73508, Arsenic Region 5      Littlejohns Creek
LOE ID:	66078
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceed the criterion for Arsenic.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for arsenic is 0.010 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ 26 Mile Rd - 531LCATMR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 73508, Arsenic Region 5      Littlejohns Creek
LOE ID:	20951
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	9
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 9 samples collected by the Surface Water Ambient Monitoring Program exceeded the USEPA Primary MCL of 10 ug/L for total arsenic
Data Reference:	San Joaquin River SWAMP Monitoring Data - Eastside Basin
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Total arsenic levels must not exceed the USEPA Primary MCL of 10 ug/L
Objective/Criterion Reference:	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road and at Sonora Road
Temporal Representation:	The samples were collected between March 18, 2003 and June 30, 2003
Environmental Conditions:
QAPP Information:	Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 73508, Arsenic Region 5      Littlejohns Creek
LOE ID:	21141
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Dissolved
Beneficial Use:	Cold Freshwater Habitat
Aquatic Life Use:	Cold Freshwater Habitat
Number of Samples:	9
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 9 samples collected by the Surface Water Ambient Monitoring Program exceeded the CTR criterion of 340 ug/L for dissolved arsenic
Data Reference:	San Joaquin River SWAMP Monitoring Data - Eastside Basin
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	Dissolved arsenic levels should not exceed the CTR 1-hour average maximum concentration of 340 ug/L
Objective/Criterion 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
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road and at Sonora Road
Temporal Representation:	The samples were collected between March 18, 2003 and June 30, 2003
Environmental Conditions:
QAPP Information:	Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 73508, Arsenic Region 5      Littlejohns Creek
LOE ID:	66079
Pollutant:	Arsenic
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 19 samples exceed the criterion for Arsenic.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The dissolved arsenic criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater for dissolved arsenic is 0.150 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ 26 Mile Rd - 531LCATMR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	89981	Region 5
Littlejohns Creek

Pollutant:	Azinphos-methyl (Guthion)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	One line of evidence is available in the administrative record to assess this pollutant. Zero of the zero 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of zero samples exceeded the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 89981, Azinphos-methyl (Guthion) Region 5      Littlejohns Creek
LOE ID:	66087
Pollutant:	Azinphos-methyl (Guthion)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Azinphos methyl.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The National Recommended Water Quality criterion for Azinphos Methyl (Guthion) for the protection of freshwater aquatic life is a maximum of 0.01 ug/l.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	71040	Region 5
Littlejohns Creek

Pollutant:	Boron
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 1 line of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 9 available concentrations exceeded the water quality objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. Table 3.1 of the listing policy recommends listing if a sample size of 9 has 2 or more samples that exceed the evaluation criteria. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 71040, Boron Region 5      Littlejohns Creek
LOE ID:	20952
Pollutant:	Boron
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	9
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	None of the 9 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation of 1,000 ug/L objective for boron
Data Reference:	San Joaquin River SWAMP Monitoring Data - Eastside Basin
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	Boron levels should not exceed 1,000 ug/L (Department of Health Services Health Advisory)
Guideline Reference:	Drinking Water Notification and Response Levels: An Overview
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road and at Sonora Road
Temporal Representation:	The samples were collected between March 18, 2003 and June 30, 2003
Environmental Conditions:
QAPP Information:	Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
QAPP Information Reference(s):

DECISION ID	86541	Region 5
Littlejohns Creek

Pollutant:	Cadmium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. 0 of the 22 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 CWA 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. 0 of the 22 samples exceed the evaluation guideline 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.

Line of Evidence (LOE) for Decision ID 86541, Cadmium Region 5      Littlejohns Creek
LOE ID:	66089
Pollutant:	Cadmium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cadmium.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for cadmium is 5 ug/L.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ 26 Mile Rd - 531LCATMR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	86542	Region 5
Littlejohns Creek

Pollutant:	Carbaryl
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Zero of the fifteen 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the fifteen samples exceed the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 86542, Carbaryl Region 5      Littlejohns Creek
LOE ID:	66090
Pollutant:	Carbaryl
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Carbaryl.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The USEPA recommended water quality criterion for freshwater aquatic life for carbaryl is 2.1 µg/L.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	90036	Region 5
Littlejohns Creek

Pollutant:	Carbofuran
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 15 samples exceed the evaluation guideline for COLD and zero of 15 samples exceed the evaluation guideline for MUN. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 15 samples exceeded the evaluation guideline for COLD and zero of 15 samples exceeded the evaluation for MUN. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 90036, Carbofuran Region 5      Littlejohns Creek
LOE ID:	66097
Pollutant:	Carbofuran
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Carbofuran.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for Carbofuran is 18 ug/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 90036, Carbofuran Region 5      Littlejohns Creek
LOE ID:	66091
Pollutant:	Carbofuran
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Carbofuran.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The freshwater criterion maximum concentration for carbofuran is 0.5 µg/L (DFG 92-3, 1992).
Guideline Reference:	Hazard Assessment of the Insecticide Carbofuran to Aquatic Organisms in the Sacramento River System
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	71093	Region 5
Littlejohns Creek

Pollutant:	Chromium (total)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	The decision has not changed. Region 5 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. This pollutant is being considered for listing under sections 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Data is available from 1 line of evidence for this pollutant. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for placing this water segment-pollution combination on the section 303(d) list. The recommendation is based on staff findings that 0 of 9 available concentrations exceeded the water quality objective and this does not exceed the allowable frequency using Table 3.1 of the Listing Policy. Table 3.1 of the listing policy recommends listing if a sample size of 9 has 2 or more samples that exceed the evaluation criteria. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 71093, Chromium (total) Region 5      Littlejohns Creek
LOE ID:	21143
Pollutant:	Chromium (total)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	9
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Zero of the 9 samples collected by the Surface Water Ambient Monitoring Program exceeded the evaluation objective for Chromium.
Data Reference:	San Joaquin River SWAMP Monitoring Data - Eastside Basin
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CRWQCB, 2006)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	Chromium levels should not exceed 50 ug/L (Department of Public Health Primary MCL).
Guideline Reference:	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Spatial Representation:	Samples were collected at Littlejohns Creek at Austin Road. Samples were collected at Littlejohn's Creek at Sonora Road.
Temporal Representation:	The samples were collected from March 18 2003 to June 30 2003.
Environmental Conditions:
QAPP Information:	Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
QAPP Information Reference(s):

DECISION ID	99636	Region 5
Littlejohns Creek

Pollutant:	Cyanazine
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	One line of evidence is available in the administrative record to assess this pollutant. Zero of the 15 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 15 samples exceeded the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 99636, Cyanazine Region 5      Littlejohns Creek
LOE ID:	66100
Pollutant:	Cyanazine
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Cyanazine.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The EC50 for Navicula pelliculosa (freshwater diatom) for cyanazine is 4.8 ug/L (USEPA Office of Pesticide Programs Ecotoxicity database).
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	90098	Region 5
Littlejohns Creek

Pollutant:	Dieldrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 15 samples exceed the evaluation guideline for COLD and zero of zero sample exceed the evaluation guideline for MUN. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 15 samples exceeded the evaluation guideline for COLD and zero of zero sample exceeded the evaluation guideline for MUN. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 90098, Dieldrin Region 5      Littlejohns Creek
LOE ID:	66107
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Dieldrin.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The Dieldrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.056 ug/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 90098, Dieldrin Region 5      Littlejohns Creek
LOE ID:	66106
Pollutant:	Dieldrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Dieldrin.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The criterion for Dieldrin to protect human health from the consumption of water and organisms is 0.00014 ug/L (California Toxics Rule).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	90218	Region 5
Littlejohns Creek

Pollutant:	Disulfoton
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	One line of evidence is available in the administrative record to assess this pollutant. Zero of zero 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of zero samples exceeded the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 90218, Disulfoton Region 5      Littlejohns Creek
LOE ID:	66109
Pollutant:	Disulfoton
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Disulfoton.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The USEPA National Recommended Water Quality criterion for disulfoton in freshwater (0.05 ug/L) is an aquatic life maximum (instantaneous) level.
Guideline Reference:	National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	100265	Region 5
Littlejohns Creek

Pollutant:	Endrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 15 samples exceed the evaluation guideline for COLD and zero of 15 samples exceed the evaluation guideline for MUN. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 15 samples exceeded the evaluation guideline for COLD and zero of 15 samples exceeded the evaluation guideline for MUN. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 100265, Endrin Region 5      Littlejohns Creek
LOE ID:	66111
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Endrin.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The Endrin criterion for the protection of human health from the consumption of water and organisms is 0.76 ug/L. (California Toxics Rule, 2000)
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 100265, Endrin Region 5      Littlejohns Creek
LOE ID:	66112
Pollutant:	Endrin
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Endrin.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The Endrin criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.036 ug/L. (California Toxics Rule, 2000)
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	85991	Region 5
Littlejohns Creek

Pollutant:	Malathion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Zero of the zero 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the zero samples exceed the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 85991, Malathion Region 5      Littlejohns Creek
LOE ID:	66119
Pollutant:	Malathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Malathion.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." Aquatic life should not be affected unacceptably if the 4-day average concentration of Malathion, 0.028 ug/L, is not exceeded more than once every three years on the average (UC Davis Aquatic Life Criterion).
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	77338	Region 5
Littlejohns Creek

Pollutant:	Methomyl
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Zero of the fifteen 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the fifteen samples exceed the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 77338, Methomyl Region 5      Littlejohns Creek
LOE ID:	66122
Pollutant:	Methomyl
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Methomyl.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The criteria continuous concentration for Methomyl in the San Joaquin River system is 0.5 ug/L (4-day average). (CDFG, 1996)
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	90340	Region 5
Littlejohns Creek

Pollutant:	Methoxychlor
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 15 samples exceed the evaluation guideline for COLD and zero of 15 samples exceed the evaluation guideline for MUN. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 15 samples exceeded the evaluation guideline for COLD and zero of 15 samples exceeded the evaluation guideline for MUN. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 90340, Methoxychlor Region 5      Littlejohns Creek
LOE ID:	66127
Pollutant:	Methoxychlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Methoxychlor.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Total identifiable persistent chlorinated hydrocarbon pesticides shall not be present in the water column at concentrations detectable within the accuracy of analytical methods approved by the Environmental Protection Agency or the Executive Officer (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 90340, Methoxychlor Region 5      Littlejohns Creek
LOE ID:	66126
Pollutant:	Methoxychlor
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Methoxychlor.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for Methoxychlor, 30 ug/L, is incorporated by reference into the (Water Quality Control Plan, Central Valley Region, Sacramento and San Joaquin Basins).
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	90394	Region 5
Littlejohns Creek

Pollutant:	Methyl Parathion
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	One line of evidence is available in the administrative record to assess this pollutant. Zero of zero 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of zero samples exceeded the evaluation guideline and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 90394, Methyl Parathion Region 5      Littlejohns Creek
LOE ID:	66128
Pollutant:	Methyl Parathion
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	0
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Parathion, Methyl.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The California Department of Fish and Game instantaneous aquatic life criterion for Methyl Parathion is 0.08 ug/L.
Guideline Reference:	Hazard Assessment of the Insecticide Methyl Parathion to Aquatic Organisms in the Sacramento River System. California Department of Fish and Game. Environmental Services Division. Administrative Report 92-1
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	68037	Region 5
Littlejohns Creek

Pollutant:	Nickel
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. 0 of the 22 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 CWA 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. 0 of the 22 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, 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.

Line of Evidence (LOE) for Decision ID 68037, Nickel Region 5      Littlejohns Creek
LOE ID:	66131
Pollutant:	Nickel
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for Nickel.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for nickel is 0.1 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ 26 Mile Rd - 531LCATMR, Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	68038	Region 5
Littlejohns Creek

Pollutant:	Nitrogen, Nitrate
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. Zero of the fifteen 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 CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the fifteen samples exceed the water quality objective and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to Section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 68038, Nitrogen, Nitrate Region 5      Littlejohns Creek
LOE ID:	66133
Pollutant:	Nitrogen, Nitrate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Nitrate as N.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for nitrate (NO3 as N) is 10.0 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	74355	Region 5
Littlejohns Creek

Pollutant:	Salinity
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 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. 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 65 samples exceeded the water quality objectives for electrical conductivity (¿salinity¿) 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. 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.

Line of Evidence (LOE) for Decision ID 74355, Salinity Region 5      Littlejohns Creek
LOE ID:	22119
Pollutant:	Salinity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	25
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Twenty-five samples were taken from Littlejohns Creek between 2004 and 2006. None of the twenty-five samples exceed the California Secondary MCL for electrical conductivity in surface water.
Data Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The water quality objective used was the California Secondary MCL recommended level of 900 uS/cm. The Basin Plan includes chemical constituent water quality objectives that include (by reference) secondary maximum contaminant levels (MCL's) protective of MUN (CVRWQCB, 2007a).The secondary MCL's for electrical conductivity provide a range of values including a recommended level (900 uS/cm), upper level (1600 uS/cm) and a short-term level (2200 uS/cm). The 'recommended' concentration was used as it is intended to be protective of all drinking water uses. Though individual listing evaluations did not look at the water supply source serving the given geographic area, there are certain areas that receive supply waters (such as the Delta Mendota Canal) that at times may be elevated above the recommended level of the secondary MCL. Where future information is made available to document this to be the case, these water bodies may be re-evaluated in future listing cycles.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Objective/Criterion Reference:	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Newcastle Road and at Jack Tone Road in San Joaquin County.
Temporal Representation:	Samples were collected between April 2003 and September 2006. Samples were collected at monthly intervals.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 74355, Salinity Region 5      Littlejohns Creek
LOE ID:	22120
Pollutant:	Salinity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	40
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Forty samples were taken from Littlejohns Creek between 2003 and 2004. None of the forty samples exceed the California Secondary MCL for electrical conductivity in surface water.
Data Reference:	Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The water quality objective used was the California Secondary MCL recommended level of 900 uS/cm. The Basin Plan includes chemical constituent water quality objectives that include (by reference) secondary maximum contaminant levels (MCLs) protective of MUN (CVRWQCB, 2007a).The secondary MCLs for electrical conductivity provide a range of values including a recommended level (900 uS/cm), upper level (1600 uS/cm) and a short-term level (2200 uS/cm). The recommended concentration was used as it is intended to be protective of all drinking water uses. Though individual listing evaluations did not look at the water supply source serving the given geographic area, there are certain areas that receive supply waters (such as the Delta Mendota Canal) that at times may be elevated above the recommended level of the secondary MCL. Where future information is made available to document this to be the case, these water bodies may be re-evaluated in future listing cycles.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Objective/Criterion Reference:	California Code of Regulations, Title 22, Division 4, Chapter 15. Domestic Water Quality and Monitoring
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road and at Sonora Road, in San Joaquin County.
Temporal Representation:	Samples were collected between February 2003 and March 2006. Samples were collected at monthly intervals.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
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	86028	Region 5
Littlejohns Creek

Pollutant:	Selenium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the eighteen samples exceed the water quality objective for MUN, and zero of the eighteen samples exceed the water quality objective for COLD. 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 CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the eighteen samples exceed the water quality objective for MUN, and zero of the eighteen samples exceed the water quality objective for COLD 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.

Line of Evidence (LOE) for Decision ID 86028, Selenium Region 5      Littlejohns Creek
LOE ID:	66140
Pollutant:	Selenium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	18
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Selenium.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The selenium criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.005 mg/L (California Toxics Rule, 2000).
Objective/Criterion Reference:	Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek @ 26 Mile Rd - 531LCATMR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 86028, Selenium Region 5      Littlejohns Creek
LOE ID:	66139
Pollutant:	Selenium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	18
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Selenium.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California primary maximum contaminant level for selenium is 0.05 mg/L.
Objective/Criterion Reference:	Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR, Littlejohns Creek @ 26 Mile Rd - 531LCATMR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	89627	Region 5
Littlejohns Creek

Pollutant:	Thiobencarb/Bolero
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	two lines of evidence are available in the administrative record to assess this pollutant. Zero of 15 samples exceed the evaluation guideline for COLD and zero of 15 samples exceed the evaluation guideline for MUN. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 15 samples exceeded the evaluation guideline for COLD and zero of 15 samples exceeded the evaluation guideline for MUN and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.
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.

Line of Evidence (LOE) for Decision ID 89627, Thiobencarb/Bolero Region 5      Littlejohns Creek
LOE ID:	66145
Pollutant:	Thiobencarb/Bolero
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Thiobencarb.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	Waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of Thiobencarb in excess of 1.0 µg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.
Line of Evidence (LOE) for Decision ID 89627, Thiobencarb/Bolero Region 5      Littlejohns Creek
LOE ID:	66144
Pollutant:	Thiobencarb/Bolero
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Cold Freshwater Habitat
Number of Samples:	15
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Thiobencarb.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin River Basin)
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:	The Basin Plan states: "Where valid testing has developed 96-hour LC50 values for aquatic organisms..., the Board will consider one tenth of this value for the most sensitive species tested as the upper limit (daily maximum) for the protection of aquatic life... or [O]ther available information on the pesticide..." The evaluation guideline for Thiobencarb, 1.4 ug/L, is a maximum acceptable toxicicant concentration (MATC) calculated for Daphnia magna (Water flea). (USEPA Office of Pesticide Programs Ecotoxicity database)
Guideline Reference:	OPP Pesticide Ecotoxicity Database.
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 1 monitoring site [Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	78640	Region 5
Littlejohns Creek

Pollutant:	Zinc
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the CWA 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. 0 of the 22 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 CWA 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. 0 of the 22 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, 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.

Line of Evidence (LOE) for Decision ID 78640, Zinc Region 5      Littlejohns Creek
LOE ID:	66147
Pollutant:	Zinc
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	22
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Water Board staff assessed Ag Waiver data for Littlejohns Creek to determine beneficial use support and results are as follows: 0 of 22 samples exceed the criterion for Zinc.
Data Reference:	Data for Various Pollutants in San Joaquin and Delta Water Quality Coalition, 2004-2010.
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The California secondary maximum contaminant level for zinc is 5.0 mg/L.
Objective/Criterion Reference:	Secondary Maximum Contaminant Levels and Compliance. CCR Title 22 section 64449.
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Data for this line of evidence for Littlejohns Creek was collected at 3 monitoring sites [Littlejohns Creek @ 26 Mile Rd - 531LCATMR, Littlejohns Creek at Escalon Bellota Road - 531XLCAER, Littlejohns Creek @ Jack Tone Rd - 531XLCAJR]
Temporal Representation:	Data was collected over the time period 2/11/2007-9/16/2008.
Environmental Conditions:	Staff is not aware of any special conditions that might affect interpretation of the data.
QAPP Information:	Data for this line of evidence was collected as part of the Irrigated Lands Regulatory Program.
QAPP Information Reference(s):	Quality Assurance Project Plan for Monitoring by the San Joaquin County and Delta Water Quality Coalition.

DECISION ID	74300	Region 5
Littlejohns Creek

Pollutant:	pH (high)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Three of the 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Three of 65 samples had pH values higher than the pH objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 74300, pH (high) Region 5      Littlejohns Creek
LOE ID:	22128
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	26
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The San Joaquin Delta Water Quality Coalition collected 26 samples from April 2003 to September 2006. One sample had a pH higher than 8.5 and did not meet the evaluation objective.
Data Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The pH of water shall not be depressed below 6.5,raised above 8.5, or changed at any time more than 0.5 units from normal ambient pH. Measurement of pH within the range of 6.5 and 8.5. A high pH value is greater than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Newcastle Road and at Jack Tone Road.
Temporal Representation:	Sampling occurred from April 2003 to September 2006
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):
Line of Evidence (LOE) for Decision ID 74300, pH (high) Region 5      Littlejohns Creek
LOE ID:	22129
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	39
Number of Exceedances:	2
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 39 samples from February 2003 to March 2004. Two of the 39 samples had a pH value over 8.5 and did not meet the evaluation objective.
Data Reference:	Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The pH of water shall not be depressed below 6.5,raised above 8.5, or changed at any time more than 0.5 units from normal ambient pH. Measurement of pH within the range of 6.5 and 8.5. A high pH value is greater than 8.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road and at Sonora Road.
Temporal Representation:	Sampling occurred from February 2003 to March 2004.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
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	74301	Region 5
Littlejohns Creek

Pollutant:	pH (low)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant
Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. One of the 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. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of 65 samples had pH values lower than the pH objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
Regional Board Decision Recommendation:	After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation:	After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 74301, pH (low) Region 5      Littlejohns Creek
LOE ID:	22131
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	39
Number of Exceedances:	0
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The Central Valley Regional Water Quality Control Board Surface Water Ambient Monitoring Program collected 39 samples from February 2003 to March 2004. None of the 39 samples had a pH value lower than 6.5 and did not meet the evaluation objective.
Data Reference:	Monitoring Data from the Surface Water Ambient Monitoring Program (SWAMP), San Joaquin River Basin - 2007 Data Review
SWAMP Data:	SWAMP
Water Quality Objective/Criterion:	The pH of water shall not be depressed below 6.5,raised above 8.5, or changed at any time more than 0.5 units from normal ambient pH. Measurement of pH within the range of 6.5 and 8.5. A low pH value is lower than 6.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Austin Road and at Sonora Road.
Temporal Representation:	Sampling occurred from February 2003 to March 2004.
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program.
QAPP Information Reference(s):	Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version)
Line of Evidence (LOE) for Decision ID 74301, pH (low) Region 5      Littlejohns Creek
LOE ID:	22130
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Warm Freshwater Habitat
Aquatic Life Use:	Warm Freshwater Habitat
Number of Samples:	26
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	The San Joaquin Delta Water Quality Coalition collected 26 samples from April 2003 to September 2006. One sample had a pH lower than 6.5 and did not meet the evaluation objective.
Data Reference:	Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program
	Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region
SWAMP Data:	Non-SWAMP
Water Quality Objective/Criterion:	The pH of water shall not be depressed below 6.5,raised above 8.5, or changed at any time more than 0.5 units from normal ambient pH. Measurement of pH within the range of 6.5 and 8.5. A low pH value is lower than 6.5.
Objective/Criterion Reference:	Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected from Littlejohns Creek at Newcastle Road and at Jack Tone Road.
Temporal Representation:	Sampling occurred from April 2003 to September 2006
Environmental Conditions:
QAPP Information:	Data quality: Good. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements (CVRWQCB, 2003)
QAPP Information Reference(s):