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5.15 WATER RESOURCES those requirements, and taking appropriate enforcement actions. The RWQCB adopts water quality control plans, or Basin Plans,which establish water quality objectives to ensure the reasonable protection of beneficial uses and a program of implementation for achieving water quality objectives within the Basin Plans. For those waters not attaining water quality standards, the RWQCB establishes total maximum daily loads (TMDLs) and a program of implementation to meet the TMDL1. The San Francisco Bay Basin Water Quality Control Plan(Basin Plan) designates beneficial uses for the Delta. Beneficial uses include agricultural supply;municipal and domestic supply; groundwater recharge;industrial service supply;industrial process supply; ocean, commercial,and sport fishing; estuarine habitat;fish migration;preservation of rare and endangered species;fish spawning;wildlife habitat;contact and non-contact water recreation;and navigation(San Francisco Bay RWQCB,2007a). Water quality objectives for the Delta are contained in the Water Quality Control Plan for the San Francisco Bay/Sacramento-San Joaquin Delta Estuary prepared by the State Water Resources Control Board (SWRCB;SWRCB, 1995). The Delta is considered an impaired water body. In response to growing concerns related to protection of beneficial uses in the Delta, staff from the SWRCB,San Francisco Bay RWQCB, and Central Valley RWQCB formed the Bay-Delta Team to develop a coordinated and comprehensive plan to address protection of beneficial uses in the San Francisco Bay and the Delta. Table 5.15-1 lists the pollutants for which the Delta does not meet water quality objectives and proposed TMDL completion dates. TABLE 5.15-1 Clean Water Act Section 303(d)List of Water Quality Impairments in the Sacramento-San Joaquin River Delta Pollutant/Stressor Potential Sources Proposed TMDL Completion Chlordane Nonpoint 2008 DDT Nonpoint 2008 Dieldrin Nonpoint 2008 Dioxin Compounds Atmospheric Deposition 2019 Exotic Species Ballast Water 2019 Furan Compounds Atmospheric Deposition 2019 Mercury Multiple 2006 Nickel Unknown 2019 PCBs(Polychlorinated biphenyls) Unknown Nonpoint 2006 PCBs(dioxin-like) Unknown Nonpoint 2019 Selenium Multiple 2019 Source: San Francisco Bay RWQCB, 2007b 1 Section 303(d)of the Clean Water Act requires that the states make a list of waters that are not attaining water quality standards. For waters on this list,the states are to develop total maximum daily loads or TMDLs.A TMDL must account for all sources of the pollutants that caused the water to be listed.Federal regulations require that the TMDL,at a minimum,account for contributions from point sources(federally permitted discharges)and contributions from nonpoint sources.TMDLs are established at the level necessary to implement the applicable water quality standards.In California,the SWRCB has interpreted state law (Porter-Cologne Water Quality Control Act,California Water Code Section 13000 et.seq.)to require that implementation be addressed when TMDLs are incorporated into Basin Plans.The Porter-Cologne Act requires each RWQCB to formulate and adopt Basin Plans for all areas within its region. It also requires that a program of implementation be developed that describes how water quality standards will be attained.TMDLs can be developed as a component of the program of implementation,thus triggering the need to describe the implementation features,or alternatively as a water quality standard.When the TMDL is established as a standard,the program of implementation must be designed to implement the TMDL(SWRCB,n.d.). 5.15-2 SAC/371322/082340005(LEC_5.15_WATER_RESOURCES.DOC)