| Water Body Name: | Sanjon Barranca Creek |
| Water Body ID: | CAR4021000020120725132701 |
| Water Body Type: | River & Stream |
DECISION ID |
67429 |
Region 4 |
Sanjon Barranca Creek |
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| Pollutant: | Escherichia coli (E. coli) |
| 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: | 2027 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Staff 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.
One line of evidence is available in the administrative record to assess this pollutant. Five of the 8 samples exceed the objective. 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. Five of 8 samples exceed the objective and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Staff 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. |
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| LOE ID: | 96000 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 8 | ||||
| Number of Exceedances: | 5 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Eight samples were collected. Five of the eight samples exceeded the E. coli evaluation guideline. | ||||
| Data Reference: | Data for Various Pollutants from Wishtoyo Foundation's Ventura Coastkeeper, 2009-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The E. coli density shall not exceed 235/100 ml. (Water Quality Control Plan for the Los Angeles Region). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Spatial Representation: | Samples were collected from Sanjon Barranca (San-1). | ||||
| Temporal Representation: | Samples were collected from October 2009 to August 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Wishtoyo Foundation volunteer monitoring QAPP was provided. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan from Wishtoyo Foundation. | ||||
DECISION ID |
67428 |
Region 4 |
Sanjon Barranca Creek |
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| Pollutant: | Trash |
| Final Listing Decision: | List on 303(d) list (being addressed by action other than TMDL) |
| Last Listing Cycle's Final Listing Decision: | New Decision |
| Revision Status | Revised |
| Sources: | Source Unknown |
| Expected Attainment Date: | 2027 |
| Implementation Action Other than TMDL: | Trash related impairment is being addressed by implementation actions required under State Water Resources Control Board Resolution 2015-0019 ?Amendment to the Water Quality Control Plan for Ocean Waters of California to Control Trash and Part 1 Trash Provisions of the Water Quality Control Plan for Inland Surface Waters, Enclosed Bays, and Estuaries of California?. |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Staff Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.7 of the Listing Policy. Under section 3.7 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 6 of 6 samples exceeded the objective. 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. 6 of 6 samples exceeded the guideline and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Staff 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. |
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| LOE ID: | 96034 | ||||
| Pollutant: | Trash | ||||
| LOE Subgroup: | Pollutant-Nuisance | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 6 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Six of the 6 samples exceed the narrative objective. Trash was observed and counted as part of the sampling efforts of the Ventura Coastkeepers. | ||||
| Data Reference: | Data for Various Pollutants from Wishtoyo Foundation's Ventura Coastkeeper, 2009-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | From the Los Angeles RWQCB Basin Plan: Waters shall not contain floating materials, including solids, liquids, foams, and scum, in concentrations that cause nuisance or adversely affect beneficial uses. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | The Los Angeles River Trash TMDL derived a numeric target for trash to evaluate the narrative guidelines listed in the Basin Plan. This target was derived as 0 for trash to fully support beneficial uses and also includes a margin of safety. | ||||
| Guideline Reference: | Trash Total Maximum Daily Loads for the Los Angeles River Watershed Revised Draft Staff Report. California Regional Water Quality Control Board, Los Angeles Region. July 27, 2007. | ||||
| Spatial Representation: | Site San-1 (San Jon Barranca / Creek downstream of Harbor Blvd on San Juan Buenaventura Beach) was surveyed. | ||||
| Temporal Representation: | San-1 was surveyed during the following time periods: October, November and December of 2009; July and August 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Wishtoyo Foundation volunteer monitoring QAPP was provided. | ||||
| QAPP Information Reference(s): | Quality Assurance Project Plan from Wishtoyo Foundation. | ||||