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KEI-P88-1013 .R2 <br /> July 15, 1992 <br /> Page 4 <br /> Unocal site. The results of KEI ' s well survey are summarized in <br /> Table 4 , and the locations of the wells are shown on the attached <br /> Well Location Map, Figure 4 . <br /> In late February of 1991, a meeting was held at the office of the <br /> SJCPHS in Stockton, California. The purpose of the meeting was to <br /> discuss the past work that has been performed at the subject site, <br /> and to develop a plan to continue the ground water investigation at <br /> and in the vicinity of the site. Attending the meeting were Ms. <br /> Diane Hinson of the SJCPHS and representatives of both Unocal and <br /> 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 are not presently dry. <br /> 2 . Make necessary repairs to all ground water monitoring wells <br /> which are salvageable. All vadose zone wells originally <br /> installed by Kleinfelder, and all monitoring wells found to be <br /> unsalvageable, are to be properly destroyed after applicable <br /> permits are obtained. <br /> 3 . Conduct a detailed review of available records concerning <br /> other environmental (past or present) investigations in the <br /> general area. This information will help determine the <br /> placement of additional monitoring wells (if necessary) . <br /> 4 . Prepare a technical report summarizing the activities men- <br /> tioned above. <br /> KEI completed the tasks listed above. The results of KEI ' s site <br /> inspection and file review were as follows: <br /> 1. On May 18 , 1991, a representative of KEI inspected the subject <br /> site to determine the present condition of all monitoring <br /> wells. Wells RW1, MW2 , MW8 and off-site well MW6 were <br /> monitored and found to be dry. The total depths of these <br /> wells ranged between 47 . 72 and 58 . 50 feet below ground <br /> surface. Wells MW2 and MW8 have suffered wellhead damage <br />