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Mr. Mike Infurna <br /> January 13 , 1992 <br /> Page 2 <br /> and MW9) suffered various amounts of wellhead damage. The <br /> boundaries of the excavation are shown on the attached Site Plan, <br /> Figure 7. <br /> A survey of all existing ground water wells within a one-mile <br /> radius of the site was performed in March of 1989. The locations <br /> of the wells located during this survey are shown on the attached <br /> Well Location Map, Figure 3 . <br /> In late February of 1991, a meeting was held at the office of the <br /> San Joaquin County Department of Public Health Services (SJCPHS) in <br /> Stockton, California. The purpose of the meeting was to discuss <br /> the past work that had been performed at the subject site, and to <br /> develop a plan to continue the ground water investigation at and in <br /> the vicinity of the site. Attending the meeting were Ms. Diane <br /> Hinson of the SJCPHS and representatives of both Unocal and KEI. <br /> It was agreed in the meeting that the soil contamination at the <br /> site had been adequately addressed and remediated (as stated in a <br /> letter from the Regional Water Quality Control Board [RWQCB] , <br /> Central Valley Region, dated August 25, 1989) . It was also agreed <br /> that Unocal would institute a phased approach in defining, <br /> evaluating, and then remediating (if necessary) the ground water <br /> contamination at the site. In Phase I of the approach, Unocal <br /> agreed to perform the following tasks: <br /> 1. Perform a survey of all existing monitoring wells at the <br /> subject site. Collect water level readings and sample all <br /> wells which were not dry. <br /> 2 . Make necessary repairs to all ground water monitoring <br /> wells which were salvageable. All vadose zone wells <br /> originally installed by Kleinfelder, and all monitoring <br /> wells found to be unsalvageable, were to be properly <br /> destroyed after the applicable permits are obtained. <br /> 3 . Conduct a detailed review of available records concerning <br /> other environmental investigations (past or present) in <br /> the general area. This information will help determine <br /> the placement of additional monitoring wells (if <br /> necessary) . <br /> 4 . Prepare a technical report summarizing the activities <br /> mentioned above. <br />