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AZURE ENVIRONMENTAL <br /> well MW-7 ILstoncal data indicate benzene has not been detected at concentrations greater than <br /> 0 5 ppb in downgradsent well MW-9 since January 1995 (0 6 ppb) and well MW-10 since October <br /> 1994 (0 6 ppb) <br />' Ground-water monitoring data continue to indicate the petroleum hydrocarbon plume is generally <br /> stable and is restricted to shallow ground water in the area adjacent to the former UST locations <br /> at the,Site <br /> 4.0 TECHNICAL STATUS REPORT <br /> Work Completed During the Fourth Quarter 1998 <br /> Work completed during the fourth quarter included performance of the quarterly ground-water <br /> monitoring program <br /> On September 10, 1998, Azure submitted to the SJCEHD a proposal for work activities to close <br /> a hydraulically actuated bulk truck emptying platform contained in a concrete-lined bunker <br /> ("platform bunker") at the Site An approval was received from the SJCEHD on September 11, <br /> 1998 A special discharge permit was obtained from the City of Stockton Department of <br /> Municipal Utilities, prior to completing the platform bunker closure activities on January 8, 1999 <br /> • The contents of the platform bunker were removed and discharged in accordance with the special <br /> discharge permit Following removal &its contents, the sides and base of the bunker were <br /> pressure washed and the rinseate removed for discharge to the sanitary sewer No additional <br /> closure activities are planned for the platform bunker <br /> Work Expected to be Completed During the First Quarter 1999 <br /> � 1} � <br /> Work expected to be completed during the first quarter includes continued performance of the <br /> quarterly ground-water monitoring program <br /> I <br />' 3 <br />