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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION ORDER NO. 92-150 NPDES NO. CA0082929 WASTE DISCHARGE REQUIREMENTS GENERAL ORDER FOR DISCHARGE OF GROUND WATER FROM CLEANUP OF PETROLEUM FUEL POLLUTION TO SURFACE WATERS The California Regional Water Quality Control Board, Central Valley Region, (hereafter Board) finds that: 1 The presence of fuel constituents in the ground water at various sites throughout the region poses a threat to existing and potential beneficial uses of the ground water. As responsible parties investigate and remediate these sites, the number of ground water cleanups of fuel constituents is increasing. Remediation at many of these site includes ground water treatment, with discharge of the treated ground water. This permit covers the discharge of treated ground water, from cleanups of fuel constituents, to waters of the United States. 2. The discharge of wastewater from a ground water treatment system to navigable water, other than through a community wastewater collection and treatment system, is a discharge of waste that could affect the quality of the waters of the United States. 3. Wastewater from a ground water cleanup can include the following: Treated ground water which had been polluted with fuel constituents, Unpolluted ground water pumped from beneath a layer of free product in order to establish a cone of depression to aid in the containment and extraction of the free product, Potentially polluted ground water extracted during short- and long- term pump tests, Potentially polluted well development water, Potentially polluted purge water prior to well sampling. These wastewaters may be produced and treated on a continuous or batch basis. 4. The Board may prescribe requirements for any discharge, in accordance with Section 13263 of the California Water Code. 5. A Notice of Intent must be filed for each discharge in order to be eligible for coverage under this Order. The Notice of Intent shall