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Excerpts on Ground Waters anlee Cleanup Page 3 from the Water Quality Control Plan • The water source does not provide sufficient water to supply a single well capable of producing an average, sustained yield of 200 gallons per day, or • The aquifer is regulated as a geothermal energy producing source or has been exempted administratively pursuant to 40 CFR, Section 146.4 for the purpose of underground injection of fluids associated with the production of hydrocarbon or geothermal energy, provided that these fluids do not constitutee-a hazardous waste under 40 CFR Section 261.3. In making any exceptions to the beneficial use designation of industrial supply (IND or PRO), the Regional Water Board will consider the following criteria: • There is pollution,either by natural processes or by human activity (unrelated to a specific pollution incident), that cannot reasonably be treated for industrial use using either Best Management Practices or best economically achievable treatment practices,or • The water source does not provide sufficient water to supply a single well capable of producing an average, sustained yield of 200 gallons per day. CHAPTER III. WATER QUALITY OBJECTIVES WATER QUALITY OBJECTIVES FOR GROUND WATERS The following objectives apply to all ground waters of the Sacramento and San Joaquin River Basins, as the objectives are relevant to the protection of designated beneficial uses. These objectives do not require improvement over naturally occurring background concentrations. The ground water objectives contained in this plan are not required by the federal Clean Water Act. Bacteria In ground waters used for domestic or municipal supply (MUN) the most probable number of coliform organisms over any seven-day period shall be less than 2.21100 ml. Chemical Constituents Ground waters shall not contain chemical constituents in concentrations that adversely affect beneficial uses. At a minimum, ground waters designated for use as domestic or municipal supply (MUN) shall not contain concentrations of chemical constituents in excess of the maximum contaminant levels (MCLS) specified in the following provisions of Title 22 of the California Code of Regulations, which are incorporated by reference into this plan: Tables 64431-A(Inorganic Chemicals) and 64431-B (Fluoride) of Section 64431,Table 64444-A(Organic Chemicals) of Section 64444, and Tables 64449-A (Secondary Maximum Contaminant Levels-Consumer Acceptance Limits) and 64449-B (Secondary Maximum Contaminant Levels-Ranges)of Section 64449. This