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Water Quality Criteria and Standards <br /> Under federal law,the EPA has published water quality regulations under Volume 40 of the Code of Federal <br /> Regulations (40 CFR). Section 303 of the CWA requires states to adopt water quality standards for all surface <br /> waters of the United States. As defined by the CWA,water quality standards consist of two elements: (1) <br /> designated beneficial uses of the water body in question and(2) criteria that protect the designated uses. Section <br /> 304(a)requires the EPA to publish advisory water quality criteria that accurately reflect the latest scientific <br /> knowledge on the kind and extent of all effects on health and welfare that may be expected from the presence of <br /> pollutants in water. Where multiple uses exist,water quality standards must protect the most sensitive use. In <br /> California,the EPA has designated the SWRCB and its nine RWQCBs with authority to identify beneficial uses <br /> and adopt applicable water quality objectives.Beneficial uses for applicable water bodies in the assessment area <br /> are shown in Table 4.9-4. The applicable water quality criteria are shown in Table 4.9-5. <br /> Table 4.9-4 <br /> Beneficial Uses Designated for the Sacramento—San Joaquin River Delta <br /> Municipal and Domestic Supply(MUN) <br /> Agricultural Supply: Irrigation(AGR) <br /> Agricultural Supply: Stock Watering(AGR) <br /> Industrial Process Supply(PROC) <br /> Industrial Service Supply(IND) <br /> Water Contact Recreation: <br /> Contact Recreation(REC 1) <br /> Noncontact Water Recreation(REC 2) <br /> Warm Freshwater Habitat(WARM) <br /> Cold Freshwater Habitat(COLD) <br /> Migration of Aquatic Organisms:Warm Water(MIGR) <br /> Migration of Aquatic Organisms: Cold Water(MIGR) <br /> Fish Spawning,Warm Water(SPWN) <br /> Wildlife Habitat(WILD) <br /> Navigation(NAV) <br /> Source:CVRWQCB 2006a <br /> Table 4.9-5 <br /> Applicable Water Quality Objectives and/or Criteria for the San Joaquin River and Sacramento—San <br /> Joaquin Delta <br /> Most Stringent Water Quality <br /> Classification Constituent Objective or Criteria Reference <br /> Value Unit <br /> Bacteriological Fecal Coliform 200/100 mL MPN Basin Plan <br /> BOD N/A N/A N/A <br /> Conventional Chlorine Residual 0.011 mg/1 Draft TRC Policy of CAS <br /> Dissolved Oxygen 5 mg/I Basin Plan <br /> DER EDAW <br /> City of Manteca 4.9-11 Hydrology and Water Quality <br />