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WASTE DISCHARGE REQUIREMENTS -6- DEFENSE DISTRIBUTION REGION WEST TRACY SAN JOAQUIN COUNTY ( iv) All equipment, instrumentation, and alarm/notification systems shall be inspected throughout the duration of the "Prove-out" , and certified operational . (v) The Discharger shall operate the extraction wells to produce the most effective hydraulic barrier to off-Depot contaminant migration. (vi) The Discharger shall evaluate the ability of the air stripper system to meet nondetectable limits (per EPA Method 8010) for TCE and PCE (0. 12 and 0.03, respectively). (vii ) The operation of the interim ground water cleanup system shall cease at the end of the 96-hour Prove-out period. The Discharger shall not resume operation of this system until the Board has reviewed the "Prove-out of System Report" (Provision D.4) and authorizes operation in writing. 4. FULL SCALE OPERATIONS: The Discharger shall not initiate the full scale operation of the interim ground water cleanup system until the Board and the Department of Health Services have reviewed the "Prove-out of System Report" (Provision D.4. ) , and have both approved the full scale operation of the system. The following requirements apply to this "Full Scale Operations" phase. ( i ) All extracted ground water shall be treated by the air stripper facility and discharged to the storm drain holding pond and/or to the injection well field. (ii ) The discharge of treated ground water to the three injection wells shall not exceed the steady state reinjection capacity of the wells as determined during the "Potable Water Start-up" phase (Discharge Specification C.1. ) . ( iii) Discharges of treated ground water to the storm drain holding pond shall be prohibited between 1 November and 30 April , unless the Discharger submits documentation to the Board that demonstrates that a discharge is necessary to maintain the ecological systems present in the pond, and that the discharge would not significantly reduce the storm water retention capacity of the pond. (iv) The Discharger shall operate the extraction wells to produce the most effective hydraulic barrier to off-Depot contaminant migration. (v) The Discharger shall operate the air stripper to maximal VOC removal efficiencies.