| Water Body Name: | San Gabriel River Estuary |
| Water Body ID: | CAR4051600020000229163853 |
| Water Body Type: | River & Stream |
DECISION ID |
68279 |
Region 4 |
San Gabriel River Estuary |
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| Pollutant: | Abnormal Fish Histology (Lesions) |
| Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Reason for Delisting: | Flaws in original listing |
| Impairment from Pollutant or Pollution: | Pollution |
| Regional Board Conclusion: | This pollutant is being considered for delisting under sections 4.8 of the Listing Policy. Under section 4.8 delisting is appropriate when documented adverse biological responses are not associated with water or sediment numeric pollutant specific evaluation guidelines.
Two lines of evidence are available in the administrative record to assess this pollutant. Based on section 4.8, adverse biological responses have been documented in fish taken from the site. Although a small portion of the fish collected exhibited impacts from toxicity, the majority of the fish samples collected from the San Gabriel River and its tributaries were victims of infectious disease. Therefore, there is insufficient information to conclude that the documented adverse biological responses are associated with specific pollutant(s). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. The majority of the fish collected showed adverse biological responses associated with infectious disease and not due to pollutant caused toxicity. 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 is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 2495 | ||||
| Pollutant: | Abnormal Fish Histology (Lesions) | ||||
| LOE Subgroup: | Adverse Biological Responses | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | San Gabriel River Tidal Prism at Confluence of Coyote Creek (LACSD, 2004):
A total of 21 tilapia (Tilapia sp.) were collected at this site. Extensive inflammation of the trigeminal ganglion was observed with cells that had characteristics of eosinophilic granular leukocytes. The cells in question were associated with a swollen feature of the nerve indicating damage to the glial cells. The frequency of this abnormality was 33%. Gill necrosis was observed in 3 of the animals studied and this involved mitochondria-rich (chloride) cells and pavement respiratory epithelium. The frequency for this lesion was 14%. Inflammation of gill arches and branchial cavity epithelium was observed in 2 of the individuals studied. The frequency of this alteration was 9%. Two of the individuals showed renal pathology. In one of these, extensive severe tubular epithelial hyalinization had occurred. This was associated with disruption of the nephron wall at that site. In another individual, interstitial inflammation was observed. Skin necrosis was found in 2 of the 21 animals observed. One gut parasite was found and appeared to be a tapeworm. San Gabriel River Tidal Prism at College Park Drive (LACSD, 2004b): A total of 30 tilapia (Tilapia sp.) and 1 white croaker (Genyonemus lineatus) were examined h m this site. Histopathologic examination revealed severe inflammation in submucosa and circular muscularis of the stomach. The inflammatory cells were eosinophilic granular leukocytes or macrophages which contained eosinophilic granules. In addition to this change, the white croaker showed mild inflammation around bile structures in the liver and inflammatory response in the wall of the heart. In addition, macrophage aggregates were present in the liver at a frequency of 3 per 10 X field. The white croaker also showed mild inflammation of the gill and two flukes (parasitic trematodes) were attached to gill structures. In the 30 tilapia, fairly consistent involvement of the eosinophilic granular leukocytes in inflammatory foci around the trigeminal ganglion and branches of the trigeminal nerve were seen. The frequency of this lesion was 30%. In addition to the changes within the 5th cranial nerve, alterations were seen in gills that indicated that 3 of the 30 individuals showed aneurysm formation in blood vessels of secondary larnellae. In addition, inflammation of gill arch and filaments and adjacent regions of the branchial cavity wall were seen. The frequency for this lesion was 17%. Inflammation of the liver in areas adjacent to arterial structures and large tributaries of the hepatic venous system were seen. The inflammatory cells were usually eosinophilic granular leukocytes. The frequency for this change was 13%. Two of the fish showed inclusion bodies within hepatocytes. These were quite frequently seen and were close in resemblance to the tubular epithelium hyaline granules of the kidney. In addition, 4 fish showed interstitial inflammation of the kidney and 5 showed extensive degeneration with tubular epithelium showing hyaline change. The frequency for the latter was 17%. Some of the tubular degenerative changes had advanced to the formation of tubular deposits of calcium and this characterized 2 of the 30 individuals. Heart ventricular mineralization was also seen in 4 of the 30 individuals examined. Skin necrosis involved 2 of the 30 individuals and was a consistent change in the affected fish. A large skin lesion was observed on one tilapia. One fish showed a parasite within the gut lumen. |
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| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Basin Plan: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological response in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration or other appropriate methods as specified by the State or Regional Board. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | With a thorough prior knowledge of normal fish anatomy, the investigators used histological analysis to detect alterations in tissues and organs caused by exposure to toxicants. When the concentration of a toxicant is sufficient to result only in cellular injury, but not in death of the cells, sublethal (adaptive) changes may be observed in affected cells.
A combination of the necropsy-based approach and the histological condition index was used in this study. Alterations from the expected normal gross anatomy and microscopic anatomy of resident fishes, fathead minnow (Pimephales promelas), goldfish (Cyprinus carpio), white croaker (Genyonemus lineatus) mosquito fish (Gambusia affinis), and tilapia (Tilapia sp.) were included in the investigation. Lesions were compared to reference populations. |
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| Guideline Reference: | Placeholder reference 2006 303(d) | ||||
| Spatial Representation: | Fish were collected from four sites in the lower San Gabriel River watershed. The sites included Coyote Creek above and below the Long Beach wastewater treatment plant outfall, the San Gabriel River at the confluence of Coyote Creek, and from the tidal prism at College Park Drive. | ||||
| Temporal Representation: | Samples were collected between 1992 and 1993. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Quality Assurance and methods well described in the report: "Toxicity study of the Santa Clara, San Gabriel River, and Calleguas Creek" (Bailey et al., 1996 in LACSD, 2004b). | ||||
| QAPP Information Reference(s): | |||||
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|||||
| LOE ID: | 2494 | ||||
| Pollutant: | Abnormal Fish Histology (Lesions) | ||||
| LOE Subgroup: | Narrative Description Data | ||||
| Matrix: | Not Specified | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | This evaluation of data came from the report: "Toxicity study of the Santa Clara, San Gabriel River, and Calleguas Creek" (Bailey et al., 1996 in LACSD, 2004b).Toxicity Identification Evaluations were completed and it was suggested that diazinon, chlorpyrifos, and ammonia were the cause of the toxicity. Studies of upstream and downstream sites in the San Gabriel River Tidal Prism revealed toxicity. Inflammatory lesions were prevalent at about 30% in fish from both sites. Gill toxicity reactions were seen at equal frequency. In the upper site, only two fish showed extensive tubular epithelial hyalinization of kidney while 5 of their counterparts from the lower site were positive for the same lesion. In addition, the lesions had advanced in the downstream affected fish to the point at which tubular deposits of calcium were prominent in two fish. Heart ventricle also showed mineralization, a likely sequel to systemic infection. Skin necrosis, likely a direct result of toxicity in the water column characterized two of the 30 fish at the lower site.
The analysis of fish collected from the San Gabriel River and its tributaries suggests that a sizeable portion of the individuals are victims of infectious disease and a smaller portion reveal signs of toxicity. These are not healthy fish and their tissue conditions do not resemble those of fishes from reference habitats previously investigated by this group. |
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| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | QA Info Missing | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
72675 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Nickel |
| Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2021 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for removal from the 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.
2 lines of evidence are available in the administrative record to assess pollutant. 13 of the 47 samples exceed the CRITERIA. 3 of the 40 samples exceed the CRITERIA. 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. 13 of 47 samples exceeded the CRITERIA and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 25285 | ||||
| Pollutant: | Nickel | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 35 | ||||
| Number of Exceedances: | 7 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Seven of 35 samples exceeded the California Toxics Rule Criterion Continuous Concentration for Nickel and 1 out of 35 samples exceeded the Criterion Maximum Concentration. Water quality samples were taken and analyzed for Nickel in accordance with the Long Beach Waste Water Reclamation Plant Permit monitoring and testing parameters. | ||||
| Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Continuous Concentration of 8.2 ug/L and a Criterion Maximum Concentration of 74 ug/L for Nickel to protect aquatic life in saltwater for the total fraction. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA2 located downstream of the confluence of the eastern and western low flow channel; station R6 located at College Park bridge; station R7 located at Westminster Avenue (Second Street); and station R8 located at Marina Avenue. | ||||
| Temporal Representation: | Grab samples were taken and analyzed on quarterly basis from July 2004 to January 2007 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
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| LOE ID: | 25287 | ||||
| Pollutant: | Nickel | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 6 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Six of six samples exceeded the California Toxics Rule Criterion Continuous Concentration for Nickel. Water quality samples were taken and analyzed for Nickel in accordance with the Haynes Generating Station Permit monitoring and testing parameters. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Continuous Concentrations of 8.2 ug/L for Nickel to protect aquatic life in saltwater. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The City of Los Angeles Department of Water and Power conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW10 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed between June 2003 and June 2004 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Haynes Generating Station NPDES Permit (NPDES No. CA0000353) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for City of Los Angeles Department of Water and Power (Haynes Generating Station) NPDES No. CA0000353. | ||||
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|||||
| LOE ID: | 25286 | ||||
| Pollutant: | Nickel | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Zero of six samples exceeded the California Toxics Rule Criterion Continuous Concentration for Nickel. Water quality samples were taken and analyzed for Nickel in accordance with the Alamitos Generating Station Permit monitoring and testing parameters. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Continuous Concentration of 8.2 ug/L for Nickel to protect aquatic life in saltwater. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | AES Alamitos L.L.C. conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW12 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed between June 2003 and August 2004 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Alamitos Generating Station NPDES Permit (NPDES No. CA0001139) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for AES Alamitos, L.L.C.(Alamitos Generating Station) NPDES No. CA0001139 | ||||
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| LOE ID: | 87820 | ||||
| Pollutant: | Nickel | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 40 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Three of the 40 samples exceeded the criteria of 8.2 ug/L. Fourteen (14) of the non-detect samples were reported above the criteria and were not used in the assessment. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in saltwater. The criterion is 8.2 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
73104 |
Region 4 |
San Gabriel River Estuary |
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| Pollutant: | Oxygen, Dissolved |
| Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2021 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
2 lines of evidence are available in the administrative record to assess this pollutant. 83 of the 500 samples exceed the OBJECTIVE. 94 of the 526 samples exceed the OBJECTIVE. 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. 83 of 500 and 94 of 526 samples exceeded the OBJECTIVE and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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| LOE ID: | 87823 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 500 | ||||
| Number of Exceedances: | 83 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Eighty-three of 500 samples exceeded the objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Dissolved Oxygen Water Quality Objective of all surface waters designated as Warm Fresh Water Aquatic Habitat shall not be depressed below 5 mg/l. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from the LC-R9W, LB-RA2, LB-R6, LB-R7, LB-R8, and SG-R5 stations. | ||||
| Temporal Representation: | Samples were collected approximately once a month from July 2005 to November 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | NPDES quality assurance. | ||||
| QAPP Information Reference(s): | |||||
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|||||
| LOE ID: | 25288 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 466 | ||||
| Number of Exceedances: | 81 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | 81 of 466 samples did not meet the Basin Plan water quality objectives for dissolved oxygen. Water quality samples were taken and analyzed for dissolved oxygen in accordance with the Long Beach Waste Water Reclamation Plant Permit monitoring and testing parameters. | ||||
| Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Basin Plan states, "[a]t a minimum, the mean annual dissolved oxygen concentration of all waters shall be greater than 7 mg/L, and no single determination shall be less than 5.0 mg/L, except when natural conditions cause lesser concentrations." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA2 located downstream of the confluence of the eastern and western low flow channel; station R6 located at College Park bridge; station R7 located at Westminster Avenue (Second Street); and station R8 located at Marina Avenue. | ||||
| Temporal Representation: | Grab samples were taken and analyzed on quarterly basis from July 2004 to January 2007 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
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|||||
| LOE ID: | 25289 | ||||
| Pollutant: | Oxygen, Dissolved | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 60 | ||||
| Number of Exceedances: | 13 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | 13 of 60 samples did not meet the Basin Plan water quality objectives for dissolved oxygen. Water quality samples were taken and analyzed for dissolved oxygen in accordance with the Haynes Generating Station Permit monitoring and testing parameters. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Basin Plan states, "[a]t a minimum, the mean annual dissolved oxygen concentration of all waters shall be greater than 7 mg/L, and no single determination shall be less than 5.0 mg/L, except when natural conditions cause lesser concentrations." | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The City of Los Angeles Department of Water and Power conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW10 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed in the summer and winter from 2002 to 2006. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Haynes Generating Station NPDES Permit (NPDES No. CA0000353) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for City of Los Angeles Department of Water and Power (Haynes Generating Station) NPDES No. CA0000353. | ||||
DECISION ID |
73269 |
Region 4 |
San Gabriel River Estuary |
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| Pollutant: | Copper |
| 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)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| TMDL Name: | San Gabriel River Metals (39) |
| TMDL Project Code: | 385 |
| Date TMDL Approved by USEPA: | 03/27/2007 |
| 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.
4 lines of evidence are available in the administrative record to assess pollutant. 5 of the 40 samples exceed the CRITERIA. 0 of the 0 samples exceed the CRITERIA. 12 of the 21 samples exceed the CRITERIA. 44 of the 181 samples exceed the CRITERIA. 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. 5 of 40, 12 of 21 and 44 of 181 samples exceeded the CRITERIA and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 2496 | ||||
| Pollutant: | Copper | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 40 | ||||
| Number of Exceedances: | 5 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Available data indicate numeric CTR standards are violated for copper 5 out of 40 results (USEPA, 2007). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Basin Plan: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | CTR values for copper in saltwater: 4.8 ppb (CMC, acute) 3.1 ppb (CCC, chronic). | ||||
| Guideline Reference: | Placeholder reference 2006 303(d) | ||||
| Spatial Representation: | Four sampling locations: receiving water stations RA2, R6, R7, and R8. | ||||
| Temporal Representation: | Samples collected from June 2003 to November 2005. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data record: 2003-2006, LA RWQCB comment letter, 2006 | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 28717 | ||||
| Pollutant: | Copper | ||||
| LOE Subgroup: | Narrative Description Data | ||||
| Matrix: | Not Specified | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | A TMDL has been established for this water segment-pollutant combination. The San Gabriel River MetalsTMDL was established by USEPA on March 26, 2007. | ||||
| Data Reference: | Staff report and appendix establishing a TMDL for Metals in the San Gabriel River Watershed. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | QA information unavailable. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 25291 | ||||
| Pollutant: | Copper | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Zero of 6 samples exceeded the California Toxics Rule Criterion Continuous Concentration for Copper. Water quality samples were taken and analyzed for Copper in accordance with the Alamitos Generating Station Permit monitoring and testing parameters. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Maximum Concentration of 5.78 ug/L and a Criterion Continuous Concentration of 3.73 ug/L for Copper to protect aquatic life in saltwater for the total fraction. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | AES Alamitos L.L.C. conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW12 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed between June 2003 and August 2004 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Alamitos Generating Station NPDES Permit (NPDES No. CA0001139) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for AES Alamitos, L.L.C.(Alamitos Generating Station) NPDES No. CA0001139 | ||||
|
|||||
| LOE ID: | 25292 | ||||
| Pollutant: | Copper | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 6 | ||||
| Number of Exceedances: | 5 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Five of six samples exceeded the California Toxics Rule Criterion Continuous Concentration for Copper and five of six samples exceeded the Criterion Maximum Concentration. Water quality samples were taken and analyzed for Copper in accordance with the Haynes Generating Station Permit monitoring and testing parameters. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Maximum Concentration of 5.78 ug/L and a Criterion Continuous Concentration of 3.73 ug/L for Copper to protect aquatic life in saltwater for the total fraction. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The City of Los Angeles Department of Water and Power conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW10 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed between June 2003 and June 2004 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Haynes Generating Station NPDES Permit (NPDES No. CA0000353) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for City of Los Angeles Department of Water and Power (Haynes Generating Station) NPDES No. CA0000353. | ||||
|
|||||
| LOE ID: | 25290 | ||||
| Pollutant: | Copper | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 9 | ||||
| Number of Exceedances: | 7 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Seven of nine samples exceeded the California Toxics Rule Criterion Continuous Concentration for Copper and 1 out of 9 samples exceeded the Criterion Maximum Concentration. Water quality samples were taken and analyzed for Copper in accordance with the Long Beach Waste Water Reclamation Plant Permit monitoring and testing parameters. | ||||
| Data Reference: | NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists a Criterion Maximum Concentration of 4.8 ug/L and a Criterion Continuous Concentration of 3.1 ug/L for Copper to protect aquatic life in saltwater. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The Sanitation Districts of Los Angeles County conducted sampling in Coyote Creek in the following receiving water monitoring stations: station RA2 located downstream of the confluence of the eastern and western low flow channel; station R6 located at College Park bridge; station R7 located at Westminster Avenue (Second Street); and station R8 located at Marina Avenue. | ||||
| Temporal Representation: | Grab samples were taken and analyzed on quarterly basis from December 2005 to January 2007. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0054119) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Long Beach Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0054119 (County Sanitation Districts of Los Angeles County) | ||||
|
|||||
| LOE ID: | 87900 | ||||
| Pollutant: | Copper | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 181 | ||||
| Number of Exceedances: | 44 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Fourty-four (44) of the 181 samples exceeded the criteria of 3.1 ug/L. Five of the non-detect results were greater than the criteria and were not used in the assessment. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in saltwater. The criterion is 3.1 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
68010 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Ammonia |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | 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.
3 lines of evidence are available in the administrative record to assess this pollutant. 1 of 293 samples exceeded the CRITERIA. 0 of 0 sample exceeded the CRITERIA. 3 of 466 samples exceeded the CRITERIA. 3 of 173 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 293, 0 of 0, 3 of 466 and 3 of 173 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 2492 | ||||
| Pollutant: | Ammonia as Nitrogen | ||||
| LOE Subgroup: | Narrative Description Data | ||||
| Matrix: | Not Specified | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 0 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | An alternative enforceable program is in place that will address ammonia water quality standards exceedances for this reach. In June 1995, the seven water reclamation plants discharging in the San Gabriel River and Santa Clara River watersheds received NPDES permits containing requirements regarding compliance with the Basin Plan water quality objectives for ammonia. In accordance with these permits, the Los Angeles County Sanitation Districts have been pursuing the addition of nitrification and denitrification facilities at each of these plants to comply with the ammonia objectives. By June 2003, it is expected that these new facilities will be operational and ammonia will be drastically reduced. Research facility operation shows that the monthly average ammonia
concentration will fully comply with the chronic ammonia objective that are expected to be applicable in June 2003. It is probable that the majority of ammonia discharged to this water body was contributed by POTWs. Information in the record indicates that the majority (over 95%) of the ammonia in the Los Angeles River was contributed by POTWs. It is probable that the contribution in the San Gabriel River watershed is dominated by contributions from POTWs as well. Generally, concentrations of ammonia upstream of the treatment plants are much lower than downstream concentrations (up to an order of magnitude difference). |
||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | |||||
| Objective/Criterion Reference: | |||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | |||||
| Temporal Representation: | |||||
| Environmental Conditions: | |||||
| QAPP Information: | QA Info Missing | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 2493 | ||||
| Pollutant: | Ammonia as Nitrogen | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 466 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Three of 466 samples exceed the four-day average water quality objective and none of 466 samples exceed the one-hour average water quality objective (LACSD, 2006). | ||||
| Data Reference: | Placeholder reference 2006 303(d) | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Los Angeles RWQCB Basin Plan Amendment: The four-day average concentration of un-ionized ammonia shall not exceed 0.035 mg/L and the one-hour average concentration shall not exceed 0.233 mg/L. | ||||
| Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
| Evaluation Guideline: | USEPA Ambient Water Quality Criteria for Ammonia (Saltwater) -
1989. |
||||
| Guideline Reference: | Placeholder reference 2006 303(d) | ||||
| Spatial Representation: | Four sampling locations: receiving water stations RA2, R6, R7, and R8. | ||||
| Temporal Representation: | Samples collected from June 2003 to November 2005. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | QA Info Missing | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87821 | ||||
| Pollutant: | Ammonia (Unionized) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 293 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | One out of 293 4-day averages exceeded the objective for unionized ammonia. Data were collected as total ammonia nitrogen. The objective was converted to total ammonia nitrogen using the formula for effluent concentration allowance. This formula is dependent on total ammonia, pH, temperature and salinity. Conductivity data was converted to salinity data using a temperature dependent translator. Conductivity data for June, July, and August 2005 were abnormally low and is assumed to be data error and therefore not included in the assessment. This data was used to determine saltwater conditions for this water body. When no corresponding conductivity data were available, the lowest value for the sampling site was assumed which results in an objective more protective of water quality. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Los Angeles Regional Water Quality Control Plan ammonia objective for inland surface water salinity greater than 10 parts per thousand is a 4-day average of 0.035 mg/L of unionized ammonia. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected at monitoring stations Long Beach R6 (SG-R6), Long Beach R7 (SG-R7), and Long Beach R8 (SG-R8). | ||||
| Temporal Representation: | Samples were collected weekly from June 2005 to September 2006. Samples were collected monthly from November 2006 to October 2009. Monthly conductivity data was collected from June 2005 to October 2007. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Samples were collected as part of an NPDES permit requirement. Receiving water data collected to represent the water body as a whole. No QAPP was submitted but an unsigned field manual was. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87822 | ||||
| Pollutant: | Nitrogen, ammonia (Total Ammonia) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 173 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Three of of 173 30-day averages exceeded the objective for ammonia. A calendar month was considered as a 30-day averaging period. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Los Angeles Regional Water Quality Control Plan 30-day site specific objective for total ammonia as nitrogen is a function of pH, temperature, and the presence of early life stages. The site specific objective for San Gabriel River Reach 1 (Firestone Blvd. to Willow St. or start of estuary) has early life stages absent year round. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected at monitoring stations Los Coyotes R4 (SG-R4), Los Coyotes R9W (SG-R9W), Long Beach RA2 (SG-RA2), and Long Beach R9E (SG-R9E). | ||||
| Temporal Representation: | Samples were collected monthly from June 2005 to October 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Samples were collected as part of an NPDES permit requirement. Receiving water data collected to represent the water body as a whole. No QAPP was submitted but an unsigned field manual was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98651 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Arsenic |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 111 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 111 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87892 | ||||
| Pollutant: | Arsenic | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 111 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | None of the 111 samples exceeded the criteria of 36 ug/L. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in saltwater. The CTR for arsenic is 36 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98652 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Cadmium |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 54 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 54 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87893 | ||||
| Pollutant: | Cadmium | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 54 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | None of the 54 samples exceeded the criteria of 9.3 ug/L. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in saltwater. The criterion is 9.3 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
68246 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Chlordane |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 a single line of evidence are necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is insufficient 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. 0 of 1 sample exceeded the CRITERIA and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to SECTION 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87894 | ||||
| Pollutant: | Chlordane | ||||
| LOE Subgroup: | Pollutant-Sediment | ||||
| Matrix: | Sediment | ||||
| Fraction: | Total | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Zero of 1 samples collected exceeded the criteria for chlordane concentration (Sum of trans-Chlordane, cis-Chlordane, cis-Nonachlor, trans-Nonachlor, and Oxychlordane). | ||||
| Data Reference: | Statewide Stream Pollution Trends Study 2008 | ||||
| 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. Waters shall not contain substances in concentrations that result in the deposition of material that causes nuisance or adversely affects beneficial uses. (Water Quality Control Plan for the Coastal Watersheds of Los Angeles And Ventura Counties). | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | The Effects Range Medium (ER-M) for Chlordane in marine sediments is 6 ppb dry weight (6 ug/kg dry weight) (NOAA,1991). | ||||
| Guideline Reference: | The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration | ||||
| Spatial Representation: | Data were collected at the following station 405SGRA2x (San Gabriel River RA-2). | ||||
| Temporal Representation: | The samples were collected on 5/20/2008. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
| QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
98417 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Chromium |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
2 lines of evidence are available in the administrative record to assess this pollutant. 0 of 54 samples exceeded the CRITERIA. 0 of 48 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 54 and 0 of 48 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87899 | ||||
| Pollutant: | Chromium, hexavalent | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 48 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | None of the 48 samples exceeded the criteria of 11 ug/L. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for hexavalent chromium is 11 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LB also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87898 | ||||
| Pollutant: | Chromium | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 54 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | None of the 54 samples exceeded the hardness adjusted criteria. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LB also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98653 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Iron |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 39 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 39 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87912 | ||||
| Pollutant: | Iron | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 39 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | None of the 39 samples exceeded the criteria of 1,000 ug/L. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | National Recommended Water Quality Criteria Continuous Concentrations are intended protect aquatic organisms from chronic exposures (expressed as 4-day average concentration) in freshwater. The evaluation guideline for iron is 1,000 ug/L to protect warm freshwater habitat. | ||||
| Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LB also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98416 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Lead |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
2 lines of evidence are available in the administrative record to assess this pollutant. 1 of 117 samples exceeded the CRITERIA. 1 of 117 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 117 and 1 of 117 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87913 | ||||
| Pollutant: | Lead | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 117 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | One of the 117 samples exceeded the criteria of 8.1 ug/L. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in saltwater. The criterion is 8.1 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87819 | ||||
| Pollutant: | Lead | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 117 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | One of the 117 samples exceeded the hardness adjusted criteria. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The criterion in freshwater is hardness dependent for each sample and varies based on the ambient hardness during sampling. Section (b)(1) in CTR contains the hardness dependent formula for the metals criterion. If no hardness data were available, a value of 100 mg/L was used. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LB also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98709 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Selenium |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 1 of 31 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 31 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87831 | ||||
| Pollutant: | Selenium | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Warm Freshwater Habitat | ||||
| Number of Samples: | 31 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | One of the 31 samples exceeded the criteria of 5 ug/L. The reporting limits for 23 non-detect samples were greater than the criteria and could not be used for the assessment. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in freshwater. The CTR for selenium is 5.0 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LB also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98710 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Silver |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 0 of 111 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 0 of 111 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87832 | ||||
| Pollutant: | Silver | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 111 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | None of the 111 samples exceeded the hardness adjusted criteria. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion maximum concentrations for silver to protect aquatic life in saltwater (1-hour average). The silver criterion is 1.9 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
97844 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Temperature, water |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 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. 9 of 499 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 9 of 499 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87833 | ||||
| Pollutant: | Temperature, water | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 499 | ||||
| Number of Exceedances: | 9 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Nine of 499 samples exceeded the objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | At no time shall estuarine habitat-designated waters be raised above 86 degrees Fahrenheit as a result of waste discharges. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Objective/Criterion Reference: | Water Quality Control Plan for Control of Temperature in the Coastal and Interstate Waters and Enclosed Bays and Estuaries of California (Thermal Plan). State Water Resources Control Board | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from the LB-RA2, LC-R9W, LB-R6, LB-R7, LB-R8 and SG-R5 stations. | ||||
| Temporal Representation: | Samples were collected approximately once a month from July 2005 to November 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98357 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Toxicity |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 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. 1 of 134 samples exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is in 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. 1 of 134 samples exceeded the OBJECTIVE and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. However, the control data was not provided, indicating poor quality assurance. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87842 | ||||
| Pollutant: | Toxicity | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 134 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Toxicity data was not reported with a control. For acute toxicity, there shall be no acute toxicity in ambient waters, including mixing zones. The acute toxicity objective for discharges dictates that the average survival in undiluted effluent for any three consecutive 96-hour static or continuous flow bioassay tests shall be at least 90%, with no single test having less than 70% survival when using an established USEPA, State Board, or other protocol authorized by the Regional Board. For chronic toxicity, as stated in the Basin Plan, ¿there shall be no chronic toxicity in ambient waters outside mixing zones. To determine compliance with this objective, critical life stage tests for at least three species with approved testing protocols shall be used to screen for the most sensitive species. The test species used for screening shall include a vertebrate, an invertebrate, and an aquatic plant. The most sensitive species shall then be used for routine monitoring. Typical endpoints for chronic toxicity tests include hatchability, gross morphological abnormalities, survival, growth, and reproduction.¿ However, there is no specific numeric target for chronic toxicity in the Basin Plan. In light of this, it may also be that the use of the monthly median of chronic toxicity to assess the chronic toxicity is appropriate since this method is used in recently adopted Los Angeles Region NPDES permits.
0 of 11 fathead minnow chronic-survival tests were less than 100% and 0 of 11 fathead minnow chronic-growth were less than 100%; these were grouped to make a total of 0 of 11 exceedances. The cerodaphnia chronic-survival and chronic reproduction tests were reported at 0 of 28 at less than 100 (0 of 28 exceedances). 3 of 9 acute tests on the fathead minnow were less than 100% survival but greater than 90% (0 of 9 exceedances). 0 of 4 menidia chronic-survival tests were less than 100% and 0 of 4 menidia chronic-growth were less than 100%; these were grouped to make a total of 0 of 4 exceedances. 6 of 6 acute tests on the fathead minnow were less than 100% survival but 5 were greater than 90% (1 of 6 exceedances). 0 of 44 topsmelt chronic-survival tests were less than 100% and 0 of 44 topsmelt minnow chronic-growth were less than 100%; these were grouped to make a total of 0 of 44 exceedances. 4 of 32 acute tests on the fathead minnow were less than 100% survival but greater than 90% (0 of 32 exceedances). |
||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Toxic pollutants shall not be present at levels that will bioaccumulate in aquatic life to levels which are harmful to aquatic life or human health. No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. There shall be no bioaccumulation of pesticide concentrations found in bottom sediments or aquatic life. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | Statistically significant difference from control using a t-test or other valid statistical tests. | ||||
| Guideline Reference: | Revised approach to toxicity test acceptability criteria using a statistical performance assessment. Environmental Toxicology and Chemistry, vol. 16, No. 6, pp 1322¿1329 | ||||
| Spatial Representation: | Samples were collected from location SG sublocation R6, R7, and R8. Sites LB-RA2 and LC-R9W were added. Mapping change request. | ||||
| Temporal Representation: | Samples were collected quarterly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
98711 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Zinc |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 1 of 87 samples exceeded the CRITERIA. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 1 of 87 samples exceeded the CRITERIA and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87843 | ||||
| Pollutant: | Zinc | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Total Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 87 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | One of the 87 samples exceeded the criteria of 81 ug/L. Thirty (30) of the non-detect results were reported above the criteria and were not used in the assessment. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | California Toxics Rule (CTR) lists criterion continuous concentrations (4-day average) to protect aquatic life in saltwater. The criterion is 81 ug/L. | ||||
| Guideline Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
| Spatial Representation: | Samples were collected from San Gabriel River Estuary from location LC also called SG at three sublocations: R6, R7, and R8. | ||||
| Temporal Representation: | Samples were collected monthly from June 2006 through May of 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
97845 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | pH |
| Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
1 line of evidence is available in the administrative record to assess this pollutant. 63 of 501 samples exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 63 of 501 samples exceeded the OBJECTIVE and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87830 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 0 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Numeric data generated from 1 sample of pH data had no exceedences. | ||||
| Data Reference: | Data for Various Pollutants in California Marinas, 2006. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The pH of bays or estuaries shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from the San Gabriel River Bridge station. | ||||
| Temporal Representation: | One sample was collected on 5/5/2007. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | NPDES quality assurance. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87829 | ||||
| Pollutant: | pH | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | Dissolved | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Number of Samples: | 500 | ||||
| Number of Exceedances: | 63 | ||||
| Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
| Data Used to Assess Water Quality: | Sixty-three of 500 samples exceeded the objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | In bays and estuaries the pH shall not be depressed below 7.0 nor raised above 9.0. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from the LB-R6, LB-R7, LB-R8 and SG-R5 stations. | ||||
| Temporal Representation: | Samples were collected approximately once a month from July 2005 to November 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The Biology Department of the San Jose Creek Water Quality Laboratory is responsible for collecting samples from receiving water stations along the San Gabriel River, Coyote Creek, San Jose Creek, Santa Clara River, and the Rio Hondo River. Data is collected for the Los Angeles Sanitation District NPDES permits. Some standard operating procedures for sampling were submitted, however no QA Project Plan was. | ||||
| QAPP Information Reference(s): | |||||
DECISION ID |
73163 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Dioxin |
| Final Listing Decision: | List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| Expected TMDL Completion Date: | 2021 |
| Impairment from Pollutant or Pollution: | Pollutant |
| Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two 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 four samples exceed the California Toxics Rule lists an organism consumption criterion for dioxin 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 met. |
| Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 25256 | ||||
| Pollutant: | Dioxin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 3 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | Three of three samples exceeded the California Toxics Rule Human Health fish consumption criterion for Dioxin. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists an organism consumption criterion of 0.000000014 ug/L for Dioxin to protect human health. The standard is based on carcinogenicity at a 1-in-a-million risk level. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The City of Los Angeles Department of Water and Power conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW10 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed between June 2003 and June 2004 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Haynes Generating Station NPDES Permit (NPDES No. CA0000353) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for AES Alamitos, L.L.C.(Alamitos Generating Station) NPDES No. CA0001139 | ||||
|
|||||
| LOE ID: | 25257 | ||||
| Pollutant: | Dioxin | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Estuarine Habitat | ||||
| Aquatic Life Use: | Fish Migration | Fish Spawning | Preservation of Rare & Endangered Species | Wildlife Habitat | ||||
| Number of Samples: | 1 | ||||
| Number of Exceedances: | 1 | ||||
| Data and Information Type: | Fixed station physical/chemical (conventional plus toxic pollutants) | ||||
| Data Used to Assess Water Quality: | One of one sample exceeded the California Toxics Rule Human Health fish consumption criterion for Dioxin. | ||||
| Data Reference: | Data for Water Quality Constituents for the Haynes Generating Station (NPDES No. CA0000353). | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The California Toxics Rule lists an organism consumption criterion of 0.000000014 ug/L for Dioxin to protect human health. The standard is based on carcinogenicity at a 1-in-a-million risk level. | ||||
| Objective/Criterion Reference: | Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | AES Alamitos L.L.C. conducted sampling in the San Gabriel River Estuary at the receiving water monitoring station RW12 located at the Pacific Coast Highway Bridge, at a point midway between the banks of the river. | ||||
| Temporal Representation: | Grab samples were taken and analyzed between June 2003 and August 2004 | ||||
| Environmental Conditions: | |||||
| QAPP Information: | Data was collected in compliance with the sampling and monitoring procedures detailed in Alamitos Generating Station NPDES Permit (NPDES No. CA0001139) Monitoring and Reporting Program. | ||||
| QAPP Information Reference(s): | Waste Discharge Requirements for City of Los Angeles Department of Water and Power (Haynes Generating Station) NPDES No. CA0000353. | ||||
DECISION ID |
98757 |
Region 4 |
San Gabriel River Estuary |
||
| Pollutant: | Indicator Bacteria |
| Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
| Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
| Revision Status | Original |
| Sources: | A Source Unknown |
| TMDL Name: | San Gabriel River Coliform (45) |
| TMDL Project Code: | 391 |
| Date TMDL Approved by USEPA: | 06/14/2016 |
| 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 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status.
7 lines of evidence are available in the administrative record to assess this pollutant. 18 of 132 samples exceeded the OBJECTIVE. 13 of 65 samples exceeded the OBJECTIVE. 10 of 155 samples exceeded the OBJECTIVE. 63 of 489 samples exceeded the OBJECTIVE. 39 of 128 samples exceeded the OBJECTIVE. 20 of 485 samples exceeded the OBJECTIVE. 35 of 126 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. 13 of 65, 39 of 128 and 35 of 126 samples exceeded the OBJECTIVES 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. There is sufficient justification to place this waterbody/pollutant in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The San Gabriel River Bacteria TMDL was approved by USEPA on 06/14/2016. |
| Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| State Board Review of Regional Board Conclusion and Recommendation: | |
| State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
| LOE ID: | 87901 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 132 | ||||
| Number of Exceedances: | 18 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed BW data for San Gabriel River Estuary to determine beneficial use support and results are as follows: 18 of 132 samples exceed the criterion for Enterococci. | ||||
| Data Reference: | Data for Region 4 Beach Watch. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2009) single sample maximum states that enterococcus density shall not exceed 104 per 100 mL. | ||||
| Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Gabriel River Estuary was collected at 2 monitoring sites [ SAN GABRIEL RIVER, 1ST ST PARKING LOT - SGR] | ||||
| Temporal Representation: | Data was collected over the time period 1/5/2006-1/6/2010. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
| QAPP Information: | The samples were collected for the Beach Watch program. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87841 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 62 | ||||
| Number of Exceedances: | 32 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Thirty-two of the 62 geomeans exceeded the total coliform objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean: The total coliform concentration shall not exceed 1000/100 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: | |||||
| Spatial Representation: | The samples were collected at Long Beach Station RSW-004 (R-6), Long Beach Station RSW-005 (R-7),Long Beach Station RSW-006 (R-8). Stations and Los Coyotes Station RSW-003 (R-9W and R-9E) and Long Beach Station RSW-003(RA-2) were added. Mapping change requested. | ||||
| Temporal Representation: | The samples were collected once a month from June 2005 to May 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the San Jose Creek Laboratory sample collection procedures. Dec 28, 2010. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87840 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 64 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Three of the 64 geomeans exceeded the total coliform objective. | ||||
| Data Reference: | Data for Region 4 Beach Watch. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The geometric mean standard for total coliform states that the fecal coliform density shall not exceed 1000 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. | ||||
| Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 1ST ST Parking Lot - SGR and San Gabriel River. | ||||
| Temporal Representation: | Samples were collected approximately once a week from 2006 to 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected for the Beach Watch program. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87834 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 127 | ||||
| Number of Exceedances: | 2 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed BW data for San Gabriel River Estuary to determine beneficial use support and results are as follows: 2 of 127 samples exceed the criterion for Coliform, Total. | ||||
| Data Reference: | Data for Region 4 Beach Watch. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | California Ocean Plan (2009) single sample maximum states that total coliform density shall not exceed 10,000 per 100 mL | ||||
| Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Gabriel River Estuary was collected at 2 monitoring sites [ SAN GABRIEL RIVER, 1ST ST PARKING LOT - SGR] | ||||
| Temporal Representation: | Data was collected over the time period 1/5/2006-1/6/2010. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
| QAPP Information: | The samples were collected for the Beach Watch program. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87839 | ||||
| Pollutant: | Total Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 358 | ||||
| Number of Exceedances: | 18 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Eighteen of the 358 samples exceeded the total coliform objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The total coliform concentration shall not exceed 10000/100 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: | Draft Guidance for Fresh Water Beaches. Last Update: May 8, 2006. Initial Draft: November 1997. California Department of Public Health. | ||||
| Spatial Representation: | The samples were collected at Long Beach Station RSW-004 (R-6), Long Beach Station RSW-005 (R-7),Long Beach Station RSW-006 (R-8). Stations and Los Coyotes Station RSW-003 (R-9W and R-9E) and Long Beach Station RSW-003(RA-2) were added. Mapping change requested. | ||||
| Temporal Representation: | The samples were collected once a month from June 2005 to May 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the San Jose Creek Laboratory sample collection procedures. Dec 28, 2010. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87910 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 66 | ||||
| Number of Exceedances: | 3 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Three of the 66 geomeans exceeded the fecal coliform objective. | ||||
| Data Reference: | Data for Region 4 Beach Watch. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The geometric mean standard for fecal coliform states that the fecal coliform density shall not exceed 200 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. | ||||
| Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 1ST ST Parking Lot - SGR and San Gabriel River. | ||||
| Temporal Representation: | Samples were collected approximately once a week from 2006 to 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected for the Beach Watch program. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87911 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 62 | ||||
| Number of Exceedances: | 36 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Thirty-six of the 62 geomeans exceeded the fecal coliform objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | Geomean: The fecal coliform concentration shall not exceed more than 200/100 ml. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at Long Beach Station RSW-004 (R-6), Long Beach Station RSW-005 (R-7),Long Beach Station RSW-006 (R-8). Stations Long Beach Station RSW-003(RA-2) and Los Coyotes Station RSW-003 (R-9W and R-9E) were added. Mapping change requested. | ||||
| Temporal Representation: | The samples were collected once a month from June 2005 to May 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the San Jose Creek Laboratory sample collection procedures. Dec 28, 2010. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87908 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 131 | ||||
| Number of Exceedances: | 12 | ||||
| Data and Information Type: | PATHOGEN MONITORING | ||||
| Data Used to Assess Water Quality: | Water Board staff assessed BW data for San Gabriel River Estuary to determine beneficial use support and results are as follows: 12 of 131 samples exceed the criterion for Coliform, Fecal. | ||||
| Data Reference: | Data for Region 4 Beach Watch. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2009) single sample maximum states that fecal coliform density shall not exceed 400 per 100ml | ||||
| Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Data for this line of evidence for San Gabriel River Estuary was collected at 2 monitoring sites [ SAN GABRIEL RIVER, 1ST ST PARKING LOT - SGR] | ||||
| Temporal Representation: | Data was collected over the time period 1/5/2006-1/6/2010. | ||||
| Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
| QAPP Information: | The samples were collected for the Beach Watch program. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87909 | ||||
| Pollutant: | Fecal Coliform | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 358 | ||||
| Number of Exceedances: | 51 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Fifty-one of the 358 samples exceeded the fecal coliform objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The Fecal Coliform concentration shall not exceed more than 400/100 ml. | ||||
| Objective/Criterion Reference: | Water Quality Control Plan Los Angeles Region R4 Basin Plan | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | The samples were collected at Long Beach Station RSW-004 (R-6), Long Beach Station RSW-005 (R-7),Long Beach Station RSW-006 (R-8). Stations Long Beach Station RSW-003(RA-2) and Los Coyotes Station RSW-003 (R-9W and R-9E) were added. Mapping change requested. | ||||
| Temporal Representation: | The samples were collected once a month from June 2005 to May 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the San Jose Creek Laboratory sample collection procedures. Dec 28, 2010. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87903 | ||||
| Pollutant: | Escherichia coli (E. coli) | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 155 | ||||
| Number of Exceedances: | 10 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Ten of the 155 samples exceeded the E. coli objective. | ||||
| Data Reference: | Data for Various Pollutants in Various Water Bodies in Sanitation Districts of Los Angeles County, 2005-2010. | ||||
| 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: | The E. Coli concentration shall not exceed more than 235/100 ml. | ||||
| Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
| Spatial Representation: | The samples were collected at Long Beach Station RSW-004 (R-6), Long Beach Station RSW-005 (R-7),Long Beach Station RSW-006 (R-8). Stations Long Beach Station RSW-003(RA-2) and Los Coyotes Station RSW-003 (R-9W and R-9E) were added to this assessment. mapping change requested. | ||||
| Temporal Representation: | The samples were collected once a month from June 2005 to May 2010. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected under the San Jose Creek Laboratory sample collection procedures. Dec 28, 2010. | ||||
| QAPP Information Reference(s): | |||||
|
|||||
| LOE ID: | 87902 | ||||
| Pollutant: | Enterococcus | ||||
| LOE Subgroup: | Pollutant-Water | ||||
| Matrix: | Water | ||||
| Fraction: | None | ||||
| Beneficial Use: | Water Contact Recreation | ||||
| Number of Samples: | 65 | ||||
| Number of Exceedances: | 13 | ||||
| Data and Information Type: | Not Specified | ||||
| Data Used to Assess Water Quality: | Thirteen of the 65 geomeans exceeded the entercoccus objective. | ||||
| Data Reference: | Data for Region 4 Beach Watch. | ||||
| SWAMP Data: | Non-SWAMP | ||||
| Water Quality Objective/Criterion: | The geometric mean standard for entercoccus states that the fecal coliform density shall not exceed 35 per 100 mL. Water Quality Control Plan for Ocean Waters 2009. | ||||
| Objective/Criterion Reference: | California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009 | ||||
| Evaluation Guideline: | |||||
| Guideline Reference: | |||||
| Spatial Representation: | Samples were collected from 1ST ST Parking Lot - SGR and San Gabriel River. | ||||
| Temporal Representation: | Samples were collected approximately once a week from 2006 to 2009. | ||||
| Environmental Conditions: | |||||
| QAPP Information: | The samples were collected for the Beach Watch program. | ||||
| QAPP Information Reference(s): | |||||