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DECISION ID |
12737 |
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Pollutant: |
Unknown Toxicity |
Final Listing Decision: |
List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: |
New Decision |
Revision Status |
Revised |
Sources: |
Source Unknown |
Expected TMDL Completion Date: |
2021 |
Impairment from Pollutant or Pollution: |
Pollutant |
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Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant.
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 section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Four of 8 water samples exhibited a statistically significant decrease in Ceriodaphnia dubia (an invertebrate species) survival compared to control, and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy.
4. Zero of 6 water samples exhibited a statistically significant decrease in Pimephales promelas (Fathead Minnow, a vertebrate species) survival compared to control, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
5. One of 4 water samples exhibited a statistically significant decrease in Selenastrum capricornutum (a plant species) growth (total cell counts) compared to control, and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy.
6. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
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RWQCB Board Decision / Staff 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. |
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SWRCB Board Decision / Staff Recommendation: |
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USEPA Decision: |
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LOE ID: |
21666 |
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Pollutant: |
Vertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
Total |
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Beneficial Use: |
Warm Freshwater Habitat |
Aquatic Life Use: |
Warm Freshwater Habitat |
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Number of Samples: |
6 |
Number of Exceedances: |
0 |
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Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Zero of six samples tested with Pimephales promelas were toxic. |
Data Reference: |
Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program |
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Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region |
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Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances (CVRWQCB, 2007). |
Objective/Criterion Reference: |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
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Evaluation Guideline: |
Statistically significant difference in acute toxicity, using Pimephales promelas (Fathead Minnow, a vertebrate species), from control using a t-test with 4-day acute-style toxicity tests. |
Guideline Reference: |
Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-012 |
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Spatial Representation: |
Samples were collected from Burch Creek at Woodson Ave Bridge and west of Rawson Road. |
Temporal Representation: |
Samples were collected from January 2005 to May 2005 and May 2006 |
Environmental Conditions: |
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QAPP Information: |
Data quality: Excellent. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements. |
QAPP Information Reference(s): |
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LOE ID: |
21668 |
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Pollutant: |
Plant Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
Total |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
4 |
Number of Exceedances: |
1 |
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Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
One of four samples tested with Selenastrum capricornutum (an algal plant species) were toxic and violated the narrative toxicity objective. The sample collected 2 May 2005 exhibited a statistically significant decrease in growth compared to the control (70% of control). |
Data Reference: |
Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program |
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Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region |
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Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances (CVRWQCB, 2007). |
Objective/Criterion Reference: |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
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Evaluation Guideline: |
Statistically significant difference in acute toxicity, using Selenastrum capricornutum as a test species, from control using a t-test with 4-day chronic-style toxicity tests. |
Guideline Reference: |
Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fourth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-013 |
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Spatial Representation: |
Samples were collected from Burch Creek at Woodson Ave Bridge |
Temporal Representation: |
Samples were collected from January 2005 to May 2005 |
Environmental Conditions: |
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QAPP Information: |
Data quality: Excellent. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements. |
QAPP Information Reference(s): |
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LOE ID: |
21697 |
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Pollutant: |
Invertebrate Toxicity |
LOE Subgroup: |
Toxicity |
Matrix: |
Water |
Fraction: |
Total |
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Beneficial Use: |
Warm Freshwater Habitat |
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Number of Samples: |
8 |
Number of Exceedances: |
4 |
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Data and Information Type: |
TOXICITY TESTING |
Data Used to Assess Water Quality: |
Four of seven and zero of one (4/8 total) samples, respectively, tested with Ceriodaphnia dubia (an invertebrate species) were toxic and violated the narrative toxicity objective. The sample collection dates and percent survival in parentheses are listed below:26 January 2005 (20)27 January 2005 (0)28 February 2006 (0)17 March 2006 (60). |
Data Reference: |
Revised Draft of the 2007 Review of the Monitoring Data for the Irrigated Lands Regulatory Conditional Waiver Program |
|
Monitoring and Reporting Program, Order Nos. R5-2003-0826, R5-2005-0833, and R5-2008-0005 for Coalition Groups Under Resolution No. R5-2003-0105, Conditional Waiver of Waste Discharge Requirements for Discharges From Irrigated Lands Within the Central Valley Region |
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Water Quality Objective/Criterion: |
All waters shall be maintained free of toxic substances in concentrations that produce detrimental physiological responses in human, plant, animal, or aquatic life. This objective applies regardless of whether the toxicity is caused by a single substance or the interactive effect of multiple substances. (CVRWQCB, 2007) |
Objective/Criterion Reference: |
Central Valley Regional Water Quality Control Board. Water Quality Control Plan (Basin Plan) for the California Regional Water Quality Control Board - Central Valley Region |
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Evaluation Guideline: |
Statistically significant difference in acute toxicity, using Ceriodaphnia dubia (an invertebrate species) as a test species, from control using a t-test with 4-day acute-style toxicity tests. |
Guideline Reference: |
Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-012 |
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Spatial Representation: |
Samples were collected from Burch Creek at Woodson Ave Bridge and west of Rawson Road. |
Temporal Representation: |
Samples were collected from January 2005 to May 2005 and May 2006. |
Environmental Conditions: |
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QAPP Information: |
Data quality: Excellent. Monitoring was conducted in accordance with Central Valley Water Board Monitoring and Reporting Program (order number R5-2003-0826) requirements. |
QAPP Information Reference(s): |