SITE INFORMATION AND CORRESPONDENCE_1992

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SUBSTANTIVE REQUIREMENTS -2- • May 21, 1992 FOR DDRW, SHARPE 3. Additional effluent limitations may be required based upon analysis results obtained after commencement of Full Scale Operation, to satisfy State Board Resolution 68-16 (Anti-Degradation Policy). C. Discharge Specifications Prior to beginning full scale operation of the SHARPE's ground water treatment system (GWTS), consisting of ground water extraction from the water bearing zones of the aquifer in the North and South Balloon and Central Areas, and treatment with air stripping column(s) and injection into the same water bearing zones from where the water was extracted, the Discharger shall perform and report on the following: 1. SYSTEM CHECK (SC) Prior to operating the ground water treatment system with contaminated ground water, a system check shall be conducted to confirm the proper construction and operation of the treatment system. The following minimum requirements apply to this system check phase: (a) A conformance inspection shall be conducted to confirm that all equipment, piping, instrumentation, and control system of the ground water treatment system have been installed according to the approved design. Any deficiencies shall be corrected. (b) To confirm piping integrity,piping of the collection system, treatment system, and injection well shall be pressure tested at 150 percent of the design pressure with potable water. Any leaks shall be repaired. (c) All instrumentation, control systems, and equipment shall be inspected for malfunctions. Instrumentation shall be calibrated and operational. All automatic controls, such as shutdown or alarm switches, shall be certified operational. Mechanical equipment such as the wet well pump(s), air blower(s), and valving will be cycled or operated. Any functional deficiencies shall be corrected. 2. POTABLE WATER START-UP PHASE (PWSP) Prior to operating the ground water treatment system potable water shall be injected into each injection well to establish injection well capacity. The following minimum requirements apply to this potable water start-up phase. (a) A step test of injection capacity shall be conducted at a minimum of 3 different injection rates; one above, one below and one at design capacity for each injection well. The test shall last a minimum of one hour at each of these flow rates, or until the water level at the injection well stabilizes. (b) The injection capacity of each injection well shall be determined. The observation wells shall be monitored per the PWSP monitoring plan in the attached Monitoring and Reporting Program.