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STATE OF CALIFORNIA <br /> PETE WILSON, Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD— oiqlo <br /> CENTRAL VALLEY REGION <br /> 3443 ROUTIER ROAD, SUITE A <br /> SACRAMENTO, CA 95827-3098 <br /> PHONE: (916) 361-5600 <br /> FAX: (916) 361-5686 $p,' <br /> � m4 <br /> 27 April 1992 5ZAPR 3 0 1992 <br /> ENVIRONMENTAL HEALTH <br /> PER1v11"T/aERV)GL3) <br /> Mr. Harry Mossberger, Plant Manager <br /> Kearney-KPF <br /> 1624 E. Alpine Avenue <br /> Stockton, CA 95208 <br /> REVIEW OF TREATMENT PERFORMANCE TEST REPORT FOR INITIAL-INTERIM GROUND WATER <br /> REMEDIATION AT KEARNEY-KPF, STOCKTON, SAN JOAQUIN COUNTY <br /> I have reviewed the 14 April 1992 report entitled "Treatment Performance Test <br /> Report for Initial-Interim Ground Water Remediation" submitted for the <br /> Kearney-KPF site in Stockton by your consultant, Hargis and Associates, Inc. <br /> (Hargis) . The results of both the injection test (to satisfy the requirements <br /> of the Waste Discharge Requirements (WDRs) for the Potable Water Start-Up <br /> Phase) and the treatment performance test indicate the initial interim <br /> treatment system will operate effectively to remove the VOCs from wells KD-4 <br /> and DMW-1 and the capacity of injection well INJ-1 is adequate to receive <br /> treated water at a rate of at least 300 gpm. <br /> As I discussed with Lynda Adams, hydrogeologist for Hargis, I have only two <br /> concerns with the treatment performance test. Discharge_Specification C.3(e) <br /> of the WDRs states " . . .the system's automatic controls, including the <br /> alarm/notification and shutdown systems, shall be inspected and certified <br /> operational . " The Treatment Performance Test Report does not discuss whether <br /> or not the alarm/notification and shutdown systems were inspected during the <br /> test. Ms. Adams informed me that an electrical problem was identified in the <br /> alarm/notification system. The problem is scheduled to be corrected on 27 <br /> April 1992. <br /> Discharge Specification C.3(e) also states "All mechanical equipment shall be <br /> operated under load to assure proper performance. " Although the two <br /> extraction wells KD-4 and DMW-1 were each o erated under expected load <br /> conditions (70 gpm and 65 gpm, respectively, because they were pumped at <br /> different times the treatment system was only tested at about half of the <br /> proposed 140 gpm for full-scale operation of the initial interim treatment <br /> system. Ms. Adams informed me that because the temporary line from the <br /> treatment system to the Baker tanks had a higher pressure than is expected <br /> when the treatment system is running at 140 gpm, the treatment system has been <br /> shown to function properly under load. <br />