Water Body Name: | San Juan Creek (San Benito County) |
Water Body ID: | CAR3052005020090204001958 |
Water Body Type: | River & Stream |
DECISION ID |
86330 |
Region 3 |
San Juan Creek (San Benito County) |
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Pollutant: | Nitrate |
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: | 2018 |
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 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Five lines of evidence are available in the administrative record to assess this pollutant. Two hundred and seventy-two of the 294 nitrate samples exceed the water quality objectives for the Municipal and Domestic Supply beneficial uses. Thirteen of the 15 nitrate/nitrite samples exceed the water quality objectives for Municipal and Domestic Supply. Fifteen of the 15 nitrate/nitrite samples exceed the water quality objectives for Cold and Warm Freshwater Habitat. The Central Coast Region requires supporting evidence of eutrophication to support a nitrate listing for Cold and Warm Freshwater Habitat. The following is a summary of the supporting evidence: 1) Dissolved oxygen for this water body ranged from 3.86 mg/L to 18.2 mg/L, often exceeding (falling below) the Cold Freshwater Habitat water quality objective of 7.0 mg/L and at times the Warm Freshwater Habitat water quality objective of 5.0 mg/L. In addition, this waterbody often exceeds the upper dissolved oxygen screening level of 13.0 mg/L (R3 NNE Technical Report, 2010). 2) Floating mats ranged up to 85 % cover, occasionally exceeding the screening threshold of 50% (R3 NNE Technical Report, 2010). 3) Water column chlorophyll a concentration ranged up to 58 ug/L, often exceeding the screening threshold of 15 ug/L (R3 NNE Technical Report, 2010). 4) Using site-specific data from this waterbody, the California Benthic Biomass Predictor Tool, v. 13 (Tetratech, 2007) predicted a benthic algal contribution to oxygen deficit for this water body of 3.23 mg/L. This exceeds the screening threshold for benthic algal contribution to oxygen deficit of 1.25 mg/L (R3 NNE Technical Report, 2010). 5) Using site-specific data from this waterbody and the Revised Qual2K model, the California Benthic Biomass Predictor Tool, v. 13, QUAL2K model (Tetratech, 2007) predicted algae biomass of 66 g/m2 AFDW. This exceeds the Cold Freshwater Habitat screening threshold for algae biomass of 60 grams/m2 and the warm water screening threshold of 80 grams/m2, respectively (Creager, et al., 2006). 6) Using site-specific data from this waterbody and the Revised Qual2K model, the California Benthic Biomass Predictor Tool, v. 13 (Tetratech, 2007) predicted benthic chlorophyll a concentration of 166 mg/m2. This exceeds the Cold Freshwater Habitat screening threshold of 150 mg/m2 and the Warm Freshwater Habitat screening threshold of 200 mg/m2 (Creager, et al., 2006). 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. Two hundred and seventy-two of the 294 nitrate samples exceed the water quality objectives for the Municipal and Domestic Supply beneficial uses. Thirteen of the 15 nitrate/nitrite samples exceed the water quality objectives for Municipal and Domestic Supply. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Fifteen of the 15 nitrate/nitrite samples exceed the water quality objectives for Cold and Warm Freshwater Habitat and there is sufficient supporting evidence of eutrophication in this water segment. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two hundred and seventy-two of the 294 nitrate samples exceed the water quality objectives for the Municipal and Domestic Supply beneficial uses. Thirteen of the 15 nitrate/nitrite samples exceed the water quality objectives for Municipal and Domestic Supply. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Fifteen of the 15 nitrate/nitrite samples exceed the water quality objectives for Cold and Warm Freshwater Habitat and there is sufficient supporting evidence of eutrophication in this water segment. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 49000 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 15 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 15 of 15 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek (San Benito County)] | ||||
Temporal Representation: | Data was collected over the time period 4/27/2009-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 17708 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 279 | ||||
Number of Exceedances: | 259 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 259 of 279 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/6/2002-3/13/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 49015 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 15 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 15 of 15 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek (San Benito County)] | ||||
Temporal Representation: | Data was collected over the time period 4/27/2009-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 9362 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 13 of 15 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 49001 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 13 of 15 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrate + nitrite (as N) that is incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek (San Benito County)] | ||||
Temporal Representation: | Data was collected over the time period 4/27/2009-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
85241 |
Region 3 |
San Juan Creek (San Benito County) |
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Pollutant: | Oxygen, Dissolved |
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: | 2018 |
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.
Eighteen lines of evidence are available in the administrative record to assess this pollutant. Sixty-nine of the 245 samples exceeded the water quality objective for dissolved oxygen in Cold Freshwater Habitats and therefore this use is not supported. Twenty of the 245 samples exceeded the water quality objective for dissolved oxygen in Warm Freshwater Habitats and this use is fully supported. The Basin Plan general water quality objective for oxygen saturation states that the median value shall not fall below 85% saturation. However, the oxygen saturation objective is only applied ¿for waters not mentioned by a specific beneficial use¿¿ and this water body is designated for both Cold and Warm Freshwater Habitats. Therefore, the use support rating for oxygen saturation is set at Insufficient Information. 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. Sixty-nine of the 245 samples exceeded the water quality objective for dissolved oxygen in Cold Freshwater Habitats and 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. |
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: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 17857 | ||||
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: | 199 | ||||
Number of Exceedances: | 17 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 17 of 199 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 11888 | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 13861 | ||||
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: | 5 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 5 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 11887 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 15 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 17856 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 199 | ||||
Number of Exceedances: | 63 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 63 of 199 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49016 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 24 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13860 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 5 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11909 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11905 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 3 of 15 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11927 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49018 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 10 of 24 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Median values should not fall below 85% saturation as a result of controllable water quality conditions (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 11925 | ||||
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: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13863 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 4 of 5 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49019 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 10 of 24 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Median values should not fall below 85% saturation as a result of controllable water quality conditions (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13862 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 4 of 5 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11926 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11889 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 3 of 15 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49017 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 24 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 5.0 mg/l at any time (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
91674 |
Region 3 |
San Juan Creek (San Benito County) |
||
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: | 2023 |
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 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Twenty-four lines of evidence are available in the administrative record to assess this pollutant. 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 and time at the same location. Six LOEs summarize sediment samples. Two sediment samples are summarized in LOEs using the test organism as the pollutant (i.e. invertebrate toxicity) and five additional sediment samples are summarized in LOEs using the pollutant name ¿toxicity¿. Therefore, seven total samples are available to assess toxic effects in sediment samples. Three of the seven sediment samples resulted in a significant toxic effect to one or more test organisms and therefore exceeds the water quality objective for aquatic life protection. Eighteen LOEs summarize water samples. Five water samples are summarized in LOEs using each of the test organisms as the pollutant name (i.e. plant toxicity, invertebrate toxicity or vertebrate toxicity) and nineteen water samples are summarized in LOEs using the pollutant name ¿toxicity¿. Therefore, twenty-four total samples are available to assess toxic effects in water samples. Eight of the twenty-four water samples resulted in a significant toxic effect to one or more test organisms and therefore exceeds the water quality objective for aquatic life protection. 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. Three of the 7 sediment samples and 10 of the 24 water samples resulted in a significant toxic effect to one or more test organisms and therefore exceed the water quality objective for aquatic life protection. These exceed 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 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: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 80331 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Nineteen samples were collected from three sites on San Juan Creek to evaluate water toxicity. Six of the nineteen samples exhibited significant toxicity. The toxicity tests for the samples included survival and reproduction of Ceriodaphnia dubia, Pimephales promelas survival and growth, Selenastrum capricornutum growth, Hyalella azteca survival, and Thalassiosira growth. 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. The following is a summary of the toxic effects at each site: At station 305MVR the sample from 9/30/08 resulted in complete mortality to Hyalella azteca within 96 hours. Multiple toxic effects were reported for samples collected from station 305SJA. The samples collected on 8/22/06, 2/6/09 and 1/19/10 had toxic effects to Ceriodaphnia dubia survival and reproduction; the sample collected on 9/30/09 had significant toxic effects to the alga Thalassiosira; and the sample collected on 3/30/10 had significant toxic effects to both the reproduction of Ceriodaphnia dubia and growth of Selenastrum capricornutum. None of the samples from station 305PRR resulted in significant toxicity to test organisms. It should be noted that the sample from station 305SJA on 2/21/06 is not included in this LOE. That sample was included in LOEs for the previous assessment cycle and therefore is not counted again here. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 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. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Significant effect is defined here using a two-tier approach consistent with the method used by the SWAMP program. The effect must be significant when compared to the control sample based on statistical test alpha level of 0.05 (Probability field in data set) AND the mean must be more than 20 percent different from the control (PercentControl field in data set). | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Spatial Representation: | The samples were collected at three stations - 305PRR San Juan Creek @ Prescott Road, 305SJA San Juan Creek at Anzar Road and 305MVR San Juan Creek at Mission Vineyard Rd. near HWY 156. | ||||
Temporal Representation: | The samples were collected from August 2006 - March 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. The QAPP was provided. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 24259 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24390 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24391 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24389 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24422 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24411 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected on a single day 5/18/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24423 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24412 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected on a single day 5/18/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24424 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 1/10/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24387 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24256 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 3 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected on a single day 2/21/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24434 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 1/10/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24386 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 3 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected on a single day 2/21/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24388 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24403 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar]. | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24401 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24413 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 24402 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPnorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
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. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | 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) | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 57871 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Five samples were collected to evaluate sediment toxicity. Two of the five samples exhibited significant toxicity to Hyalella azteca. The toxicity tests included growth and 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. Two samples from station 305SJA resulted in one or more toxic effects. The sample collected on 5/1/08 has significant toxic effects to both the growth and survival of Hyalella azteca and the sample collected on 4/14/09 has significant effects to survival. It should be noted that one sample included in this data set is not included in this LOE. The sample from station 305SJA on 5/18/06 was included in LOEs for the previous assessment cycle and therefore is not counted again here. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 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. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Significant effect is defined here using a two-tier approach consistent with the method used by the SWAMP program. The effect must be significant when compared to the control sample based on statistical test alpha level of 0.05 (Probability field in data set) AND the mean must be more than 20 percent different from the control (PercentControl field in data set). | ||||
Guideline Reference: | Major and Trace Element Analytical Methods of the National Status and Trends Program: 2000-2006. | ||||
Spatial Representation: | The samples were collected at 305PRR San Juan Creek @ Prescott Road, 305SJA San Juan Creek at Anzar Road and 305MVR San Juan Creek at Mission Vineyard Rd. near HWY 156. | ||||
Temporal Representation: | The samples were collected between April 2007 and April 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 80332 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Five samples were collected to evaluate sediment toxicity. Two of the five samples exhibited significant toxicity to Hyalella azteca. The toxicity tests included growth and 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. Two samples from station 305SJA resulted in one or more toxic effects. The sample collected on 5/1/08 has significant toxic effects to both the growth and survival of Hyalella azteca and the sample collected on 4/14/09 has significant effects to survival. It should be noted that one sample included in this data set is not included in this LOE. The sample from station 305SJA on 5/18/06 was included in LOEs for the previous assessment cycle and therefore is not counted again here. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 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. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Significant effect is defined here using a two-tier approach consistent with the method used by the SWAMP program. The effect must be significant when compared to the control sample based on statistical test alpha level of 0.05 (Probability field in data set) AND the mean must be more than 20 percent different from the control (PercentControl field in data set). | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Spatial Representation: | The samples were collected at 305PRR San Juan Creek @ Prescott Road, 305SJA San Juan Creek at Anzar Road and 305MVR San Juan Creek at Mission Vineyard Rd. near HWY 156. | ||||
Temporal Representation: | The samples were collected between April 2007 and April 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 57870 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 19 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Nineteen samples were collected from three sites on San Juan Creek to evaluate water toxicity. Six of the nineteen samples exhibited significant toxicity. The toxicity tests for the samples included survival and reproduction of Ceriodaphnia dubia, Pimephales promelas survival and growth, Selenastrum capricornutum growth, Hyalella azteca survival, and Thalassiosira growth. 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. The following is a summary of the toxic effects at each site: At station 305MVR the sample from 9/30/08 resulted in complete mortality to Hyalella azteca within 96 hours. Multiple toxic effects were reported for samples collected from station 305SJA. The samples collected on 8/22/06, 2/6/09 and 1/19/10 had toxic effects to Ceriodaphnia dubia survival and reproduction; the sample collected on 9/30/09 had significant toxic effects to the alga Thalassiosira; and the sample collected on 3/30/10 had significant toxic effects to both the reproduction of Ceriodaphnia dubia and growth of Selenastrum capricornutum. None of the samples from station 305PRR resulted in significant toxicity to test organisms. It should be noted that the sample from station 305SJA on 2/21/06 is not included in this LOE. That sample was included in LOEs for the previous assessment cycle and therefore is not counted again here. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 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. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Significant effect is defined here using a two-tier approach consistent with the method used by the SWAMP program. The effect must be significant when compared to the control sample based on statistical test alpha level of 0.05 (Probability field in data set) AND the mean must be more than 20 percent different from the control (PercentControl field in data set). | ||||
Guideline Reference: | Major and Trace Element Analytical Methods of the National Status and Trends Program: 2000-2006. | ||||
Spatial Representation: | The samples were collected at three stations - 305PRR San Juan Creek @ Prescott Road, 305SJA San Juan Creek at Anzar Road and 305MVR San Juan Creek at Mission Vineyard Rd. near HWY 156. | ||||
Temporal Representation: | The samples were collected from August 2006 - March 2010. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. The QAPP was provided. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
100342 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | Turbidity |
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: | 2023 |
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. Twenty-four of the 92 samples exceed the evaluation guideline for Cold Freshwater Habitat (Sigler et al. 1984) and 22 of the 92 samples exceed the Warm Freshwater Habitat evaluation guideline (Shoup, D.E. and Wahl D.H., 2009), both used to interpret the water quality objective for turbidity. 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. Twenty-four of the 92 samples exceed the evaluation guideline for Cold Freshwater Habitat and 22 of the 92 samples exceed the Warm Freshwater Habitat evaluation guideline and 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. |
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: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 13883 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 17543 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 53 | ||||
Number of Exceedances: | 18 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 18 of 53 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 2 monitoring sites [ Anzar Rd., SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 9/28/2005-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11908 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 9 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 7/19/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49050 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 25 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 5 of 25 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984). | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 49051 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 25 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 3 of 25 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Turbidities of 40 NTU or greater can cause a reduction in piscivorous fish (largemouth bass) growth due to interference with their ability to find food (Shoup, D.E. and Wahl D.H., 2009). | ||||
Guideline Reference: | The Effects of Turbidity on Prey Selection by Piscivorous Largemouth Bass | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13899 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11907 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 9 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 7/19/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16928 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 53 | ||||
Number of Exceedances: | 18 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 18 of 53 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 2 monitoring sites [ Anzar Rd., SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 9/28/2005-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85297 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | Ammonia |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | The pollutant name was changed to ¿Ammonia¿ in the 2014 assessment cycle. This decision replaces the two previously approved decisions, one for each of the pollutants unionized ammonia and total ammonia. This decision contains all of the LOEs from those decisions in addition to new LOEs.
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. Nine lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Four LOEs summarize unionized ammonia data in which zero of the 29 samples exceed the water quality objective for unionized ammonia set to protect aquatic life. Three LOEs summarize total ammonia data and zero of the 305 samples exceed the EPA's Lifetime Health advisory level for total ammonia in drinking water. 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 29 samples exceed the water quality objective for unionized ammonia and zero of the 305 samples exceed the EPA's Lifetime Health advisory level for total ammonia in drinking water. These do 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. |
|
|||||
LOE ID: | 9359 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Ammonia as N, Total. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). | ||||
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13843 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-3/28/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 9360 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48982 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek (San Benito County)] | ||||
Temporal Representation: | Data was collected over the time period 4/27/2009-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13844 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-3/28/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 9361 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48983 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek (San Benito County)] | ||||
Temporal Representation: | Data was collected over the time period 4/27/2009-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 17815 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 278 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 278 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). | ||||
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/6/2002-3/13/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48981 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 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. (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek (San Benito County)] | ||||
Temporal Representation: | Data was collected over the time period 4/27/2009-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
72853 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | Chlorophyll-a |
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 3.2 of the Listing Policy. Under section 3.2 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. One of the 44 samples exceed the evaluation guideline (North Carolina Administrative code, Title 15A) used to interpret the narrative water quality objective for bio-stimulation risk and aquatic life 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. One of the 44 samples exceed the evaluation guideline 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. |
|
|||||
LOE ID: | 13845 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Objective/Criterion Reference: | Water quality standards table | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 9363 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Objective/Criterion Reference: | Water quality standards table | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48998 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 24 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | Water quality standards table | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13846 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Objective/Criterion Reference: | Water quality standards table | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48999 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 24 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | Water quality standards table | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 9364 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Objective/Criterion Reference: | Water quality standards table | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
81302 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | Chlorpyrifos |
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: | No new data are assessed. This decision has not changed from the 2010 listing cycle.
This pollutant is being considered for placement on the section 303(d) list under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list. Four lines of evidence are available in the administrative record to assess this pollutant. Zero of two water samples exceed the Evaluation Guideline (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005) applied to protect for aquatic life beneficial uses. However, this decision will not use these two samples because the laboratory¿s method detection limit and reporting limits were greater than the evaluation guideline and the result was non-detect. Therefore the results could not be quantified with the level of certainty required by the Listing Policy. The single sediment sample (pore water) will not be used in the assessment because the lab detected chlorpyrifos but was unable to quantify the result because the reporting limit exceeds the evaluation guideline. Therefore, the results could not be quantified with the level of certainty required by the Listing Policy. 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. No samples exceeded the Evaluation Guideline (Siepmann and Finlayson, 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005) applied to protect for aquatic life beneficial uses. The 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: | 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. |
|
|||||
LOE ID: | 16312 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16313 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16109 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16110 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
80812 |
Region 3 |
San Juan Creek (San Benito County) |
||
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)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | No new data are assessed. This decision has not changed from the 2010 listing cycle.
This pollutant is being considered for placement on the section 303(d) list under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list. Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the two samples exceeded the Evaluation Guideline (Finlayson, 2004) applied to protect for aquatic life beneficial uses. The single sediment sample (pore water) did not exceed the evaluation guideline (Finalyson, 2004). There is no diazinon evaluation guideline specific to "sediment, interstitial water" (pore water). LOEs summarizing pore water results will not be the sole basis for any decision. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 two samples exceeded the evaluation guideline and the single sediment sample (pore water) did not exceed the evaluation guideline. This does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy, nor will LOEs summarizing pore water result in the sole basis for any decision. 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. |
|
|||||
LOE ID: | 16723 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16702 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16716 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/10/2006-5/17/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 16736 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | 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, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann 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 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected on a single day 5/3/2006. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
85350 |
Region 3 |
San Juan Creek (San Benito County) |
||
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)(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 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Five lines of evidence are available in the administrative record to assess this pollutant. Four of the 246 samples exceed the evaluation guideline (Moyle, 1976) used to interpret the water quality objective for water temperature. 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. Four of the 246 samples exceed the evaluation guideline 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. |
|
|||||
LOE ID: | 11906 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11928 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 17415 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 199 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 2 of 199 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/9/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49052 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 25 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 25 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13900 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 5 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
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: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
84667 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | pH |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(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 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Twenty-five lines of evidence are available in the administrative record to assess this pollutant. Five beneficial uses are assessed. Twenty of the 278 samples exceed the water quality objectives for Cold and Warm Freshwater Habitat, and 49 of the 278 samples exceeded the water quality objectives for Drinking Water and Recreation. 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. Twenty of the 278 samples exceed the water quality objectives for Cold and Warm Freshwater Habitat, and 49 of the 278 samples exceeded the water quality objectives for Drinking Water and Recreation. None of these 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. |
|
|||||
LOE ID: | 49036 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 10 of 24 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 17558 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 232 | ||||
Number of Exceedances: | 39 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 39 of 232 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11219 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11201 | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13880 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49038 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 6 of 24 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 11216 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11236 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13882 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
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: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 17573 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Warm Freshwater Habitat | ||||
Aquatic Life Use: | Warm Freshwater Habitat | ||||
Number of Samples: | 232 | ||||
Number of Exceedances: | 14 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 14 of 232 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 17572 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 232 | ||||
Number of Exceedances: | 39 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 39 of 232 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49037 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 10 of 24 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 13881 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11235 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11215 | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11218 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13879 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49035 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 10 of 24 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 17557 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 232 | ||||
Number of Exceedances: | 39 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 39 of 232 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11200 | ||||
Pollutant: | pH | ||||
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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 49034 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 6 of 24 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 3 monitoring sites [ 305SJA - San Juan Creek (San Benito County), 305MVR - San Juan Creek, 305PRR - San Juan Creek at Prescott Rd] | ||||
Temporal Representation: | Data was collected over the time period 2/13/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 17556 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 232 | ||||
Number of Exceedances: | 14 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Monterey Area Research Consortium (R3_MARC) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 14 of 232 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Marc Los Huertos Water Quality Data, file A | ||||
Final Data File used for assessment: Marc Los Huertos Water Quality Data, file B | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 4 monitoring sites [ Anzar Rd., SJ-101 - San Juan Creek at Highway 101, highway 156, SJ-PA - San Juan Creek at Pajaro River junction] | ||||
Temporal Representation: | Data was collected over the time period 11/12/2002-2/11/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11217 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 8/30/2005-8/31/2005. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13864 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Northern Area Ag-Waiver Monitoring (R3_CMPNorth) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJA - San Juan Creek at Anzar Road] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2006-9/26/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11199 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 0 of 15 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
81412 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | Escherichia coli (E. coli) |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | No new data were assessed.
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. Escherichia coli (E. coli) is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is supported and a minimum of five exceedances is needed to determine if beneficial uses are not supported using Table 3.2. Therefore, the use support rating is set to 'insufficient information'. Two lines of evidence are available in the administrative record to assess this pollutant. Nine of 15 samples exceed the evaluation standard (Ambient Water Quality Criteria for Bacteria, USEPA, 1986) set to protect for water contact recreation (i.e. swimming, wading etc.) and 1 of 15 samples exceed the water quality objective for non-contact recreation. 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. Nine of 15 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and 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: | 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. |
|
|||||
LOE ID: | 11197 | ||||
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: | 9 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 9 of 15 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. | ||||
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11198 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 1 of 15 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. E. coli is a fecal coliform. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
100343 |
Region 3 |
San Juan Creek (San Benito County) |
||
Pollutant: | Fecal Coliform |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Collection System Failure | Domestic Animals/Livestock | Urban Runoff/Storm Sewers |
TMDL Name: | Pajaro River Fecal Coliform (including San Benito R., Llagas Cr., and Tequesquita Slough) |
TMDL Project Code: | 669 |
Date TMDL Approved by USEPA: | 08/03/2010 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | No new data were assessed. However, a TMDL has been approved by US EPA since the 2010 assessment cycle.
This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.2 and 3.3 of the Listing Policy. Under 3.3 of the Policy, a minimum of one line of evidence is needed to assess listing status. The sample size for the evaluation guideline for non-contact recreation for fecal coliform is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is supported and a minimum of five exceedances is needed to determine if beneficial uses are not supported using Table 3.2. Therefore, the use support rating is set to 'insufficient information'. Two lines of evidence are available in the administrative record to assess this pollutant. Ten of 15 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and 3 of 15 samples exceed the water quality objective for non-contact recreation. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. 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. Ten of 15 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. The Pajaro River Fecal Coliform TMDL has been approved by USEPA on 08/03/2010. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | 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. |
|
|||||
LOE ID: | 11181 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 10 of 15 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11182 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Pajaro (Pajaro) data for San Juan Creek (San Benito County) to determine beneficial use support and results are as follows: 3 of 15 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for San Juan Creek (San Benito County) was collected at 1 monitoring site [ 305SJN-San Juan Creek at Anzar] | ||||
Temporal Representation: | Data was collected over the time period 1/25/2005-3/14/2006. Pajaro watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
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