| Water Body Name: | Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
| Water Body ID: | CAR5192200020120323141359 |
| Water Body Type: | River & Stream |
DECISION ID |
145482 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Imidacloprid |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2020) |
| Revision Status | Revised |
| Reason for Delisting: | Flaws in original listing |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Original listing was made in error, as there were duplicate LOEs in the 2020 cycle. Removing of the duplicate LOE changed this decision from a List to a Delist. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because the original basis for listing was flawed. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
|||||
| LOE ID: | 190752 | ||||
| Pollutant: | Imidacloprid | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Imidacloprid. Although a total of 4 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of Imidacloprid does not exceed 0.016 ug/L. (UC Davis Water Quality Criteria) | ||||
| Guideline Reference: | Water Quality Criteria Report for Imidacloprid Phase III: Application of the pesticide water quality criteria methodology. Department of Environmental Toxicology. University of California, Davis | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2011-06-27 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145481 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Permethrin |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2020) |
| Revision Status | Revised |
| Reason for Delisting: | Flaws in original listing |
| TMDL Name: | Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs |
| TMDL Project Code: | 872 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Original listing was made in error, as there were duplicate LOEs in the 2020 cycle. Removing of the duplicate LOE changed this decision from a List to a Delist. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because the original basis for listing was flawed. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
|||||
| LOE ID: | 59041 | ||||
| Pollutant: | Permethrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 1 sample was below both the reporting limit (1.0 ug/kg dry weight) and the organic carbon normalized evaluation guideline (0.89 ug/g OC) and could not be quantified with the level of certainty required by the listing policy. 0 of 2 samples exceeded the evaluation guideline. | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for permethrin, 0.89 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 8.9 ug/g OC). The LC50 (8.9 ug/g OC) is the geometric mean of OC normalized LC50 values for permethrin from Amweg et al. (2005). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 192849 | ||||
| Pollutant: | Permethrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 1 of the 1 samples exceeded the water quality threshold for Permethrin. Although a total of 4 samples were collected, 3 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Permethrin is 1 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Permethrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Permethrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2011-08-01 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
150806 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Toxicity |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2018) |
| Revision Status | Revised |
| Reason for Delisting: | Flaws in original listing |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This water body was incorrectly added to the 2018 303(d) list of impaired water bodies in 2018. Data presented in LOE 234549 were incorrectly assessed as toxicity data during the earlier Integrated Report cycle. These data have now been correctly assessed as pyrethroids in sediment. In the absence of new toxicity data for this water body the decision will be retired during a future Integrated Report cycle. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because the original basis for listing was flawed. |
| 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: | 234549 | ||||
| Pollutant: | Pyrethroids | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | One-tenth the organic carbon normalized LC50 values for sediment-bound pyrethroids were used as toxicity thresholds in a toxicity unit (TU) analysis. Samples containing at least 2 pyrethroids with concentrations above the reporting limit were assessed for additive toxicity. 3 of 3 sediment samples indicated a calculated TU > 1, suggesting that samples had pyrethroid pesticides at levels expected to exert additive, chronic toxicity. A combination of 2 or more of the pyrethroids, bifenthrin, lambda-cyhalothrin, permethrin, cyfluthrin, cypermethrin and deltamethrin were present in the assessed samples. | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | "The narrative toxicity objective states, ""All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for the TU analysis is based on the following: "The concentration of each toxic substance is divided by its toxicologic limit. The resulting ratios are added for substances having similar toxicologic effects and, separately, for carcinogens. The additive toxicity criterion has been violated if the sum of the ratios is >1 (CV Basin Plan, 2011)." | ||||
| Guideline Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
DECISION ID |
145491 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Bifenthrin |
| Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2020) |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| TMDL Name: | Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs |
| TMDL Project Code: | 872 |
| Date TMDL Approved by USEPA: | 04/22/2019 |
| 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. Sediment toxicity LOE 59086 is an additive assessment of pyrethroids based on sediment chemistry that does not apply to this decision and so has been removed from the decision. There are no sediment toxicity data to support sediment chemistry exceedances and so this information no longer contributes to the listing recommendation. Two lines of evidence are available in the administrative record to assess pollutant for Cold Freshwater Habitat (COLD). Eight of the eight water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD. Three of the three sediment samples exceeded the evaluation guideline for COLD. 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. 8 of the 8 water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD, and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. Three of the three sediment samples exceeded the evaluation guideline for COLD. Though sediment chemistry is in exceedance with three of three samples, sediment toxicity is not associated with this decision, thus it cannot be listed based on sediment chemistry alone. This pollutant is being listed for the exceedance of water samples. 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: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
|
|||||
| LOE ID: | 186621 | ||||
| Pollutant: | Bifenthrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 8 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 8 of 8 samples exceeded the water quality threshold for Bifenthrin. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Bifenthrin is 0.1 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Bifenthrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Bifenthrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59014 | ||||
| Pollutant: | Bifenthrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 3 of 3 samples exceeded the evaluation guideline (0.043 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for bifenthrin, 0.043 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.43 ug/g OC). The LC50 (0.43 ug/g OC) is the geometric mean of OC normalized LC50 values for bifenthrin from Amweg et al. (2005) and Amweg and Weston (2007). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
DECISION ID |
145490 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Cyfluthrin |
| Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2020) |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| TMDL Name: | Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs |
| TMDL Project Code: | 872 |
| Date TMDL Approved by USEPA: | 04/22/2019 |
| 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. Sediment toxicity LOE 59086 is an additive assessment of pyrethroids based on sediment chemistry that does not apply to this decision and so has been removed from the decision. There are no sediment toxicity data to support sediment chemistry exceedances and so this information no longer contributes to the listing recommendation. Two lines of evidence are available in the administrative record to assess pollutant for Cold Freshwater Habitat (COLD). Two of the two water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD. Three of the three sediment samples exceeded the evaluation guideline for COLD. 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 of the two water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD, and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. Three of the three sediment samples exceeded the evaluation guideline for COLD. Though sediment chemistry is in exceedance with three of three samples, sediment toxicity is not associated with this decision, thus it cannot be listed based on sediment chemistry alone. This pollutant is being listed for the exceedance of water samples. 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: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
|
|||||
| LOE ID: | 59050 | ||||
| Pollutant: | Cyfluthrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 3 of 3 exceeded the evaluation guideline (0.11 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for cyfluthrin, 0.11 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1.1 ug/g OC). The LC50 (1.1 ug/g OC) is the geometric mean of OC normalized LC50 values for cyfluthrin from Amweg et al. (2005). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 187812 | ||||
| Pollutant: | Cyfluthrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the water quality threshold for Cyfluthrin. Although a total of 6 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Cyfluthrin is 0.2 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Cyfluthrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Bifenthrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145488 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Cypermethrin |
| Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2020) |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| TMDL Name: | Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs |
| TMDL Project Code: | 872 |
| Date TMDL Approved by USEPA: | 04/22/2019 |
| 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. Sediment toxicity LOE 59086 is an additive assessment of pyrethroids based on sediment chemistry that does not apply to this decision and so has been removed from the decision. There are no sediment toxicity data to support sediment chemistry exceedances and so this information no longer contributes to the listing recommendation. Two lines of evidence are available in the administrative record to assess pollutant for Cold Freshwater Habitat (COLD). Two of the two water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD. Three of the three sediment samples exceeded the evaluation guideline for COLD. 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 of the two water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD, and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. Three of the three sediment samples exceeded the evaluation guideline for COLD. Though sediment chemistry is in exceedance with three of three samples, sediment toxicity is not associated with this decision, thus it cannot be listed based on sediment chemistry alone. This pollutant is being listed for the exceedance of water samples. 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: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
|
|||||
| LOE ID: | 188023 | ||||
| Pollutant: | Cypermethrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the water quality threshold for Cypermethrin. Although a total of 8 samples were collected, 6 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Cypermethrin is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Cypermethrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Cypermethrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59059 | ||||
| Pollutant: | Cypermethrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 3 of 3 samples exceeded the evaluation guideline (0.03 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for cypermethrin, 0.03 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.3 ug/g OC). The LC50 (0.3 ug/g OC) is the geometric mean of OC normalized LC50 values for cypermethrin from Maund et al. (2002). | ||||
| Guideline Reference: | Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
DECISION ID |
119934 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 188840 | ||||
| Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Dichlorophenoxyacetic Acid, 2,4-. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for 2,4-D (2,4-Dichlorophenoxy acetic acid) is the USEPA Aquatic Life Benchmark of 299.2 ug/L for a vascular plant (acute). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 188841 | ||||
| Pollutant: | 2,4-D (2,4-Dichlorophenoxy acetic acid) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Dichlorophenoxyacetic Acid, 2,4-. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Primary Maximum Contaminant Level for 2, 4-D incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 0.07 mg/L | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119944 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | 2-Methyl-4-chlorophenoxyacetic acid (MCPA):acetic acid |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 191200 | ||||
| Pollutant: | 2-Methyl-4-chlorophenoxyacetic acid (MCPA):acetic acid | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for MCPA. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for 2-Methyl-4-chlorophenoxyacetic acid (MCPA):acetic acid is the USEPA Aquatic Life Benchmark of 20 ug/L for a vascular plant (acute) for MCPA EHE. | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
151564 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Benthic Community Effects |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2018) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Benthic community effects are being considered for placement on the CWA section 303(d) List under section 3.9 of the Listing Policy. Under section 3.9, when data show benthic community degradation and there is at least one pollutant impairment that could impact benthic macroinvertebrates, the waterbody is placed on the 303(d) List for benthic community effects. Ten lines of evidence evaluating benthic macroinvertebrate bioassessment data are available in the administrative record to assess this indicator. Ten of ten benthic-macroinvertebrate samples exceed the California Stream Condition Index (CSCI) impairment threshold of 0.79. At least one line of evidence includes sufficient pollutant exceedances to indicate the waterbody is impaired for at least one pollutant. However, there is insufficient data and/or information to determine if at least one pollutant could be impacting benthic macroinvertebrates. Based on the readily available data and information, the evidence indicates that there is sufficient justification against placing Benthic Community Effects in this waterbody segment on the CWA section 303(d) List. Although there is insufficient data and/or information to make a beneficial use support determination, the exceedances of the benthic macroinvertebrate samples indicate beneficial uses may be potentially threatened. 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 ten benthic macroinvertebrate bioassessment samples had CSCI scores below 0.79. 4. At least one line of evidence includes sufficient pollutant exceedances to indicate the waterbody is impaired for at least one pollutant related to aquatic life; however, data and/or information are insufficient to determine if the pollutant(s) is impacting benthic macroinvertebrates. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | |
|
|||||
| LOE ID: | 189933 | ||||
| Pollutant: | Fipronil Sulfone | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 1 of 4 samples exceeded the water quality threshold for Fipronil Sulfone. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Fipronil sulfone is the USEPA Aquatic Life Benchmark of 0.037 ug/L for chronic toxicity in invertebrates (7 day average). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 189929 | ||||
| Pollutant: | Fipronil Sulfone | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 1 of the 4 samples exceeded the water quality threshold for Fipronil Sulfone. Although a total of 8 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Fipronil sulfone is the USEPA Aquatic Life Benchmark of 0.037 ug/L for chronic toxicity in invertebrates (7 day average). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 191235 | ||||
| Pollutant: | Malathion | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Malathion. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of malathion does not exceed 0.028 ug/L (UC Davis Aquatic Life Criteria). | ||||
| Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-02-16 and 2011-02-16 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 186621 | ||||
| Pollutant: | Bifenthrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 8 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 8 of 8 samples exceeded the water quality threshold for Bifenthrin. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Bifenthrin is 0.1 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Bifenthrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Bifenthrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59014 | ||||
| Pollutant: | Bifenthrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 3 of 3 samples exceeded the evaluation guideline (0.043 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for bifenthrin, 0.043 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.43 ug/g OC). The LC50 (0.43 ug/g OC) is the geometric mean of OC normalized LC50 values for bifenthrin from Amweg et al. (2005) and Amweg and Weston (2007). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 190997 | ||||
| Pollutant: | Malathion | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the water quality threshold for Malathion. Although a total of 7 samples were collected, 5 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of malathion does not exceed 0.028 ug/L (UC Davis Aquatic Life Criteria). | ||||
| Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59050 | ||||
| Pollutant: | Cyfluthrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 3 of 3 exceeded the evaluation guideline (0.11 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for cyfluthrin, 0.11 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1.1 ug/g OC). The LC50 (1.1 ug/g OC) is the geometric mean of OC normalized LC50 values for cyfluthrin from Amweg et al. (2005). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 187812 | ||||
| Pollutant: | Cyfluthrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the water quality threshold for Cyfluthrin. Although a total of 6 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Cyfluthrin is 0.2 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Cyfluthrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Bifenthrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59059 | ||||
| Pollutant: | Cypermethrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 3 of 3 samples exceeded the evaluation guideline (0.03 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for cypermethrin, 0.03 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.3 ug/g OC). The LC50 (0.3 ug/g OC) is the geometric mean of OC normalized LC50 values for cypermethrin from Maund et al. (2002). | ||||
| Guideline Reference: | Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 315463 | ||||
| Pollutant: | Fipronil | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 4 of the 4 samples exceeded the water quality threshold for Fipronil. Although a total of 8 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the four-day average concentration of fipronil does not exceed 0.0032 ug/L (3.2 ng/L) in the water column more than once every three years on average (Bower, et al. 2017). | ||||
| Guideline Reference: | Water and Sediment Quality Criteria Report for Fipronil. Phase III: Application of the pesticide water and sediment quality criteria methodologies. Department of Environmental Toxicology, University of California, Davis. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 305622 | ||||
| Pollutant: | Benthic-Macroinvertebrate Bioassessments | ||||
| LOE Subgroup: | Population/Community Degradation | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 10 | ||||
| Number of Exceedances: | 10 | ||||
| Data and Information Type: | Benthic macroinvertebrate surveys | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed data for 519PGCR09 to determine beneficial use support and the results are as follows: 10 of 10 samples exceeded the threshold. CSCI scores were from 0.202923024 to 0.447251981. | ||||
| Data Reference: | California Stream Condition Index (CSCI) Scores for the 2024 Integrated Report for Region 5, Sacramento River sub-region. | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. Region 5 Basin Plan | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The California Stream Condition Index (CSCI) is a biological scoring tool that helps aquatic resource managers translate complex data about benthic macroinvertebrates found living in a stream into an overall measure of stream health. The CSCI score is calculated by comparing the expected condition with actual (observed) results (Rehn, A.C. et al., 2015). CSCI scores range from 0 (highly degraded) to greater than 1 (equivalent to reference). CSCI scoring of biological condition are as follows (per the scientific paper supporting the development of the CSCI scoring tool): greater than or equal to 0.92 = likely intact condition, 0.91 to 0.80 = possibly altered condition, 0.79 to 0.63 = likely altered condition, less than or equal to 0.62 = very likely altered condition. Sites with scores below 0.79 are considered to have exceeded the water quality objective for the aquatic life beneficial use. | ||||
| Guideline Reference: | Bioassessment in complex environments: designing an index for consistent meaning in different settings | ||||
| Spatial Representation: | Samples were collected from station 519PGCR09. | ||||
| Temporal Representation: | Samples were collected from 5/17/2006 to 4/18/2019. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data were collected using Surface Water Ambient Monitoring Program protocols | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 193089 | ||||
| Pollutant: | Pyrethroids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 8 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 8 of 8 samples exceeded the water quality threshold for Pyrethroids. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The summed ratios of the pyrethroid pesticides bifenthrin, cyfluthrin, cypermethrin, esfenvalerate, lambda-cyhalothrin, permethrin and their respective chronic concentration goals are not to exceed 1. If the freely dissolved concentrations of these pesticides were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 234549 | ||||
| Pollutant: | Pyrethroids | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | One-tenth the organic carbon normalized LC50 values for sediment-bound pyrethroids were used as toxicity thresholds in a toxicity unit (TU) analysis. Samples containing at least 2 pyrethroids with concentrations above the reporting limit were assessed for additive toxicity. 3 of 3 sediment samples indicated a calculated TU > 1, suggesting that samples had pyrethroid pesticides at levels expected to exert additive, chronic toxicity. A combination of 2 or more of the pyrethroids, bifenthrin, lambda-cyhalothrin, permethrin, cyfluthrin, cypermethrin and deltamethrin were present in the assessed samples. | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | "The narrative toxicity objective states, ""All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for the TU analysis is based on the following: "The concentration of each toxic substance is divided by its toxicologic limit. The resulting ratios are added for substances having similar toxicologic effects and, separately, for carcinogens. The additive toxicity criterion has been violated if the sum of the ratios is >1 (CV Basin Plan, 2011)." | ||||
| Guideline Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 188023 | ||||
| Pollutant: | Cypermethrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the water quality threshold for Cypermethrin. Although a total of 8 samples were collected, 6 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Cypermethrin is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Cypermethrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Cypermethrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119941 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Bromacil |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 186630 | ||||
| Pollutant: | Bromacil | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Bromacil. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Bromacil is the USEPA Aquatic Life Benchmark of 6.8 ug/L for a nonvascular plant (acute). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119929 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Carbaryl |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 187175 | ||||
| Pollutant: | Carbaryl | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Carbaryl. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The USEPA recommended water quality criteria for freshwater aquatic life for carbaryl is 2.1 µg/L. | ||||
| Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Current as of 08/03/2016. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145489 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Cyhalothrin, Lambda |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2020) |
| Revision Status | Revised |
| TMDL Name: | Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs |
| TMDL Project Code: | 872 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 190705 | ||||
| Pollutant: | Cyhalothrin, Lambda | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Lambda-cyhalothrin. Although a total of 8 samples were collected, 8 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Lambda-cyhalothrin is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Lambda-cyhalothrin were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Lambda-cyhalothrin | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Date for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59032 | ||||
| Pollutant: | Cyhalothrin, Lambda | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 1 sample was below both the reporting limit (0.1 ug/kg dry weight) and the organic carbon normalized evaluation guideline (0.044 ug/g OC) and could not be quantified with the level of certainty required by the listing policy. 0 of 2 samples exceeded the evaluation guideline. | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for lambda-cyhalothrin, 0.044 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.44 ug/g OC). The LC50 (0.44 ug/g OC) is the geometric mean of OC normalized LC50 values for lambda-cyhalothrin from Amweg et al. (2005). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
DECISION ID |
145487 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Deltamethrin |
| 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)(2020) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 315524 | ||||
| Pollutant: | Deltamethrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Deltamethrin. Although a total of 5 samples were collected, 5 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for deltamethrin is the USEPA Aquatic Life Benchmark of 0.000026 ug/L for an invertebrate (chronic). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site: PGC015 (Dr. Paul J. Dugan Park, 1432 Diamond Woods Circle near influx to Pleasant Grove Creek). | ||||
| Temporal Representation: | Data for this waterbody were collected over the date range 2010-10-24 to 2011-08-01 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 59077 | ||||
| Pollutant: | Deltamethrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 0 of 3 samples exceeded the evaluation guideline (0.079 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for deltamethrin, 0.079 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 0.79 ug/g OC). The LC50 (0.79 ug/g OC) is the geometric mean of OC normalized LC50 values for deltamethrin from Amweg et al. (2005). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
DECISION ID |
119931 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Diazinon |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollution |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 188578 | ||||
| Pollutant: | Diazinon | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 7 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 7 samples exceeded the water quality threshold for Diazinon. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The freshwater chronic value for diazinon is 0.1 ug/L (4 day average)(Finlayson, 2004). | ||||
| Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119942 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Dicamba |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollution |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 188743 | ||||
| Pollutant: | Dicamba | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Dicamba. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Dicamba is the USEPA Aquatic Life Benchmark of 61 ug/L for a nonvascular plant (acute) for Dicamba acid. | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119951 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Dimethoate |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 188943 | ||||
| Pollutant: | Dimethoate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Dimethoate. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Dimethoate is the USEPA Aquatic Life Benchmark of 0.5 ug/L for a invertebrate (acute). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119932 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Diuron |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 189013 | ||||
| Pollutant: | Diuron | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Diuron. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of diuron does not exceed 1.3 ug/L (UC Davis Aquatic Life Criteria). | ||||
| Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: III. Diuron. Reviews of Environmental Contamination and Toxicology 216:105-141. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145486 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Esfenvalerate/Fenvalerate |
| 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)(2020) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 59068 | ||||
| Pollutant: | Esfenvalerate/Fenvalerate | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 0 of 3 exceeded the evaluation guideline (0.15 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for esfenvalerate/fenvalerate, 0.15 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1.5 ug/g OC). The LC50 (1.5 ug/g OC) is the geometric mean of OC normalized LC50 values for esfenvalerate/fenvalerate from Amweg et al. (2005). | ||||
| Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 189656 | ||||
| Pollutant: | Esfenvalerate/Fenvalerate | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Esfenvalerate. Although a total of 8 samples were collected, 8 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The chronic concentration goal for Esfenvalerate is 0.3 ng/L (expressed as a 4-day average). If the freely dissolved concentrations of Esfenvalerate were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Water Quality Criteria Report for Esfenvalerate | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Date for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145485 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Fenpropathrin |
| 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)(2020) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 59023 | ||||
| Pollutant: | Fenpropathrin | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | A total of 3 individual sediment samples were collected; 0 of 3 exceeded the evaluation guideline (0.12 ug/g OC). | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | |||||
| Water Quality Objective/Criterion: | The narrative objective for pesticides states, "No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. Discharges shall not result in pesticide concentrations in bottom sediments or aquatic life that adversely affect beneficial uses." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for fenpropathrin, 0.1 ug/g OC, is one-tenth of the median lethal concentration for H. azteca (LC50; 1 ug/g OC). The LC50 (1 ug/g OC) is the geometric mean of OC normalized LC50 values for fenpropathrin from Ding et al. (2011). | ||||
| Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||
|
|||||
| LOE ID: | 315601 | ||||
| Pollutant: | Fenpropathrin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support, and the results are as follows: 0 of the 0 samples exceeded the evaluation guideline for Fenpropathrin. Although a total of 5 samples were collected, 5 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Fenpropathrin is the USEPA Aquatic Life Benchmark of 0.0015 ug/L for an invertebrate (chronic). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site: PGC015 (Dr. Paul J. Dugan Park, 1432 Diamond Woods Circle near influx to Pleasant Grove Creek). | ||||
| Temporal Representation: | Data for this waterbody were collected over the date range 2010-10-24 to 2011-08-01 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145483 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Fipronil Desulfinyl |
| 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)(2020) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollution |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 189814 | ||||
| Pollutant: | Fipronil Desulfinyl | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Fipronil Desulfinyl. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Fipronil degradate Fipronil desulfinyl is the USEPA Aquatic Life Benchmark of 0.54 ug/L for a fish (chronic). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119962 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Hexazinone |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 190563 | ||||
| Pollutant: | Hexazinone | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Hexazinone. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Hexazinone is the USEPA Aquatic Life Benchmark of 7 ug/L for a nonvascular plant (acute). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119950 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Methidathion |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 190988 | ||||
| Pollutant: | Methidathion | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Methidathion. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Methidathion is the USEPA Aquatic Life Benchmark of 0.66 ug/L for a invertebrate (acute). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
123660 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Oxygen, Dissolved |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the Clean Water Act (CWA) section 303(d) List under section 3.2 of the Listing Policy. A total of two lines of evidence are available in the administrative record to assess this pollutant. A total of 4 of 8 samples exceed the water quality objective for the cold freshwater habitat beneficial use and 4 of 8 samples exceed the water quality objective for the fish spawning beneficial use. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification for 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. A total of 4 of 8 samples exceed the water quality objective for the cold freshwater habitat beneficial use and 4 of 8 samples exceed the water quality objective for the fish spawning beneficial use. 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 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 the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
|
|||||
| LOE ID: | 207725 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 4 of 8 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as COLD is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 207759 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 4 of 8 samples exceeded the water quality threshold for Oxygen, Dissolved. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The minimum dissolved oxygen concentration for waters designated as SPWN is 7.0 mg/L. (Water Quality Control Plan, Central Valley Region, Sacramento River Basin and San Joaquin Basin) | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119937 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Simazine |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 193561 | ||||
| Pollutant: | Simazine | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Simazine. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Primary Maximum Contaminant Level for Simazine incorporated by reference in the Water Quality Control Plan for the Sacramento and San Joaquin River Basins is 0.004 mg/L. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 193640 | ||||
| Pollutant: | Simazine | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Simazine. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Simazine is the USEPA Aquatic Life Benchmark of 6 ug/L for a nonvascular plant (acute). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
153783 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Specific Conductivity |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 312262 | ||||
| Pollutant: | Specific Conductivity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 3 samples exceeded the upper limit of the range for SpecificConductivity. Additionally, 0 of the 3 samples fall within the range, and 3 of 3 samples fall below the threshold. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary MCL that is incorporated by reference into the Water Quality Control Plan for the Sacramento and San Joaquin River Basins specifies a range for specific conductance of 900 - 1600 uS/cm assessed as an annual average. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site: PGC015 (Dr. Paul J. Dugan Park, 1432 Diamond Woods Circle near influx to Pleasant Grove Creek). | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
|
|||||
| LOE ID: | 313742 | ||||
| Pollutant: | Specific Conductivity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed SWAMP BDAT data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 1 samples exceeded the upper limit of the range for SpecificConductivity. Additionally, 0 of the 1 samples fall within the range, and 1 of 1 samples fall below the threshold. | ||||
| Data Reference: | SWAMP data entered by SWRCB into BDAT database | ||||
| SWAMP Data: | SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary MCL that is incorporated by reference into the Water Quality Control Plan for the Sacramento and San Joaquin River Basins specifies a range for specific conductance of 900 - 1600 uS/cm assessed as an annual average. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site: 519LSAC35 (PG Ck (Crocker-Ranch East)). | ||||
| Temporal Representation: | The samples were collected between the dates of 2004-10-24 and 2004-10-24 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Monitoring was conducted in accordance with the State Water Resources Control Board's Quality Assurance Program Plan for the State of California's Surface Water Ambient Monitoring Program. | ||||
| QAPP Information Reference(s): | This is a placeholder for previously assessed data that does not have quality assurance information but would require it under newly developed policies. These LOEs were previously assessed and approved at the Regional, State and Federal level in past cycles. The LOEs needed to be moved and/or reassessed but required this reference code for movement within the decision making database. | ||||
DECISION ID |
131164 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Pursuant to section 6.1.5.9 of the Listing Policy, this assessment utilized the upper limit of the optimal temperature range for rainbow trout for growth and completion of most life stages to interpret the narrative water quality objective for temperature. 0 of 24 samples exceeded the evaluation guideline for COLD, Fish Migration and Fish Spawning. However, the available data are insufficient to satisfy the Listing Policy requirements for spatial and temporal representation (sections 6.1.5.2 and 6.1.5.3). The surface water grab samples collected did not provide sufficient temporal and spatial representation to determine if temperature conditions experienced by aquatic life were within the optimal temperature range throughout the entire water column or the length of time temperature conditions may have exceeded the optimal temperature range. Available information for this waterbody-pollutant combination is insufficient to determine whether the aquatic beneficial use is supported. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available for this Integrated Report cycle indicating that standards are not met. This decision will be reevaluated in the next Integrated Report cycle as more data and information become available. Additional data and information may include information demonstrating that sample location(s) are representative of conditions throughout the waterbody, data from additional sampling locations, continuous monitoring data collected in the waterbody, waterbody-specific information on sensitive resident species, their life stage time frames, and the appropriate temperature thresholds necessary to support each life stage. |
| Regional Board Decision Recommendation: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
|
|||||
| LOE ID: | 230967 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Fish Spawning | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 230965 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 230966 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Fish Migration | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for Temperature. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Water Board that such alteration in temperature does not adversely affect beneficial uses (Sacramento-San Joaquin River Basin Plans. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
| Guideline Reference: | Inland Fishes of California | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
153409 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Total Dissolved Solids |
| 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)(2020) |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | During the 2024 Cycle LOEs were updated due to a reassessment of data based on the Central Valley Water Board CV-SALTS Secondary MCL Policy. Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 312851 | ||||
| Pollutant: | Total Dissolved Solids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Municipal & Domestic Supply | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 2 samples exceeded the upper limit of the range for Total Dissolved Solids. Additionally, 0 of the 2 samples fall within the range, and 2 of 2 samples fall below the threshold. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Secondary MCL that is incorporated by reference into the Water Quality Control Plan for the Sacramento and San Joaquin River Basins specifies a range for total dissolved solids of 500 - 1000 mg/L assessed as an annual average. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site: PGC015 (Dr. Paul J. Dugan Park, 1432 Diamond Woods Circle near influx to Pleasant Grove Creek). | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2011-06-27 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | This is a placeholder reference for data that was collected after QAPP requirements were developed, but exempt from the requirements. | ||||
DECISION ID |
119953 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Triclopyr |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | Insufficient information is available to determine beneficial use support for this waterbody-pollutant combination with the statistical power and confidence required by the Listing Policy. Beneficial use support will be reassessed in a future cycle, if more data are available. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded. |
|
|||||
| LOE ID: | 194187 | ||||
| Pollutant: | Triclopyr | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 4 samples exceeded the water quality threshold for Triclopyr. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan for the Sacramento and San Joaquin River Basins). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Triclopyr is the USEPA Aquatic Life Benchmark of 26 ug/L for a fish (chronic) for Triclopyr Butoxyethyl Ester (BEE). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
131163 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | pH |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 24 samples exceeded the OBJECTIVE for COLD, REC-1, and REC-2. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 24 samples exceeded the OBJECTIVE for COLD, REC-1, and REC-2, and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded. |
|
|||||
| LOE ID: | 229517 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 229633 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 229455 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Non-Contact Recreation | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 0 of 8 samples exceeded the water quality threshold for pH. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Water Quality Control Plan, Central Valley Region Sacramento River Basin and San Joaquin River Basin: pH should not be lower than 6.5 or higher than 8.5. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145484 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Fipronil |
| 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)(2020) |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2035 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One line of evidence are available in the administrative record to assess this pollutant. Four of the 4 non-specified water samples exceed the guideline. 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. Four of the 4 non-specified water samples exceed the guideline and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
|||||
| LOE ID: | 315463 | ||||
| Pollutant: | Fipronil | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 4 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 4 of the 4 samples exceeded the water quality threshold for Fipronil. Although a total of 8 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the four-day average concentration of fipronil does not exceed 0.0032 ug/L (3.2 ng/L) in the water column more than once every three years on average (Bower, et al. 2017). | ||||
| Guideline Reference: | Water and Sediment Quality Criteria Report for Fipronil. Phase III: Application of the pesticide water and sediment quality criteria methodologies. Department of Environmental Toxicology, University of California, Davis. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119961 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Fipronil Sulfone |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2035 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Two of the 8 water samples, with fractions listed as total and non-recorded, exceed the water quality objective for COLD. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification 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. Two of the 8 water samples exceed the guideline and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
|||||
| LOE ID: | 189933 | ||||
| Pollutant: | Fipronil Sulfone | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 1 of 4 samples exceeded the water quality threshold for Fipronil Sulfone. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Fipronil sulfone is the USEPA Aquatic Life Benchmark of 0.037 ug/L for chronic toxicity in invertebrates (7 day average). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-08-01 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 189929 | ||||
| Pollutant: | Fipronil Sulfone | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 4 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 1 of the 4 samples exceeded the water quality threshold for Fipronil Sulfone. Although a total of 8 samples were collected, 4 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The evaluation guideline for Fipronil sulfone is the USEPA Aquatic Life Benchmark of 0.037 ug/L for chronic toxicity in invertebrates (7 day average). | ||||
| Guideline Reference: | OPP Aquatic Life Benchmarks | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
119933 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Malathion |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2035 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. 2 of the 2 water samples with non-recorded fractions and 1 of 1 water samples with total fractions exceed the evaluation guideline for the Cold Freshwater Habitat beneficial use. 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. Two of the 2 water samples with non-recorded fractions exceed the evaluation guideline for the Cold Freshwater Habitat beneficial use, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
|||||
| LOE ID: | 190997 | ||||
| Pollutant: | Malathion | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Not Recorded | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 2 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed Surface Water Monitoring Project data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and the results are as follows: 2 of the 2 samples exceeded the water quality threshold for Malathion. Although a total of 7 samples were collected, 5 of these samples were not included in the assessment because the laboratory data reporting limit(s) was above the water quality threshold and therefore the results could not be quantified with the level of certainty required by the Listing Policy Section 6.1.5.5. | ||||
| Data Reference: | Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of malathion does not exceed 0.028 ug/L (UC Davis Aquatic Life Criteria). | ||||
| Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015). | ||||
| Temporal Representation: | Data for this waterbody was collected over the date range 2010-10-24 to 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 191235 | ||||
| Pollutant: | Malathion | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 1 of 1 samples exceeded the water quality threshold for Malathion. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | Aquatic life should not be affected unacceptably if the 4-day average concentration of malathion does not exceed 0.028 ug/L (UC Davis Aquatic Life Criteria). | ||||
| Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2011-02-16 and 2011-02-16 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
DECISION ID |
145480 |
Region 5 |
Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) |
||
| Pollutant: | Pyrethroids |
| 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)(2020) |
| Revision Status | Revised |
| Sources: | A Source Unknown |
| TMDL Name: | Phase 2 (Pyrethroids)Sacramento and San Joaquin Pesticides Basin Plan Amendment and TMDLs |
| TMDL Project Code: | 872 |
| Date TMDL Approved by USEPA: | 04/22/2019 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Sediment toxicity LOE 59086 is an additive assessment of pyrethroids based on sediment chemistry that does not apply to this decision and so has been removed from the decision. There are no sediment toxicity data to support sediment chemistry exceedances and so this information no longer contributes to the listing recommendation. Two lines of evidence are available in the administrative record to assess this pollutant. Eight of the eight water samples, reported in the dissolved fraction, exceeded the evaluation guideline for COLD. Three of the three sediment samples exceeded the evaluation guideline for COLD. 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. Eight of the eight water samples, reported in the dissolved fraction exceeded the evaluation guideline for COLD, and three of the three sediment samples exceeded the evaluation guideline for COLD, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. There is an associated sediment toxicity data as required by Section 3.6 of the Listing Policy. Though sediment chemistry is in exceedance with 3 of 3 samples, sediment toxicity does not exceed, thus it cannot be listed based on sediment chemistry alone. This pollutant is being listed for the exceedance of water samples. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | This decision was made by SWRCB staff. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
|
|||||
| LOE ID: | 193089 | ||||
| Pollutant: | Pyrethroids | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 8 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed DPR Pleasant Grove Creek data for Pleasant Grove Creek, unnamed northern tributary (from Greywood Circle to confluence with Pleasant Grove Creek) to determine beneficial use support and results are as follows: 8 of 8 samples exceeded the water quality threshold for Pyrethroids. | ||||
| Data Reference: | Field, Sediment, Water data for the 2020/2022 integrated report in Region 5. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins; Fifth Edition. Revised May 2018 (with approved amendments) | ||||
| Evaluation Guideline: | The summed ratios of the pyrethroid pesticides bifenthrin, cyfluthrin, cypermethrin, esfenvalerate, lambda-cyhalothrin, permethrin and their respective chronic concentration goals are not to exceed 1. If the freely dissolved concentrations of these pesticides were reported or could be calculated then these values were used for this assessment. In the absence of freely dissolved concentrations, total concentrations were used. | ||||
| Guideline Reference: | Amendment to the Water Quality Control Plan for the Sacramento River and San Joaquin River Basins for the Control of Pyrethroid Pesticide Discharges | ||||
| Spatial Representation: | The samples were collected at 1 monitoring site (PGC015) | ||||
| Temporal Representation: | The samples were collected between the dates of 2010-10-24 and 2012-06-19 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Department of Pesticide Regulation | ||||
| QAPP Information Reference(s): | Department of Pesticide Regulation (DPR) QAPP Equivalent Documentation 2020 | ||||
|
|||||
| LOE ID: | 234549 | ||||
| Pollutant: | Pyrethroids | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | None | ||||
| Beneficial Use: | Cold Freshwater Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | One-tenth the organic carbon normalized LC50 values for sediment-bound pyrethroids were used as toxicity thresholds in a toxicity unit (TU) analysis. Samples containing at least 2 pyrethroids with concentrations above the reporting limit were assessed for additive toxicity. 3 of 3 sediment samples indicated a calculated TU > 1, suggesting that samples had pyrethroid pesticides at levels expected to exert additive, chronic toxicity. A combination of 2 or more of the pyrethroids, bifenthrin, lambda-cyhalothrin, permethrin, cyfluthrin, cypermethrin and deltamethrin were present in the assessed samples. | ||||
| Data Reference: | Various Data for Pleasant Grove Creek, Del Puerto Creek and Roseville Area, 2006-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | "The narrative toxicity objective states, ""All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Evaluation Guideline: | The evaluation guideline for the TU analysis is based on the following: "The concentration of each toxic substance is divided by its toxicologic limit. The resulting ratios are added for substances having similar toxicologic effects and, separately, for carcinogens. The additive toxicity criterion has been violated if the sum of the ratios is >1 (CV Basin Plan, 2011)." | ||||
| Guideline Reference: | Water Quality Control Plan for the California Regional Water Quality Control Board Central Valley Region, Sacramento and San Joaquin River Basins. 4th ed | ||||
| Spatial Representation: | Sediment samples were collected along Pleasant Grove Creek at the following station location in 2006, 2007 and 2008: PGC 9. | ||||
| Temporal Representation: | Sediment samples were collected on 05/17/2006, 05/09/2007, and 5/03/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Submitted QA data are acceptable. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan for Pyrethroid Working Group. | ||||