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STATE OF CALIFORNIA <br /> GEORGE DEUKMEJIAN,Governor <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD-- <br /> CENTRAL VALLEY REGION <br /> 3443 ROLITIER ROAD <br /> SACRAMENTO, <br /> O,CA 95827-3098KLkAD VIE D <br /> N O V 10 1989 <br /> ENVIRONMENTAL HEALTH <br /> 8 November 1989 PERMIT/SERVICES <br /> Ms. Diane Hinson , <br /> Supervising REHS <br /> San Joaquin County <br /> Department of Public Health Services <br /> Environmental Health Division <br /> P.O. Box 2009 <br /> Stockton CA 95201 ' <br /> CHEVRON, 9474 NORTH HIGHWAY 99, STOCKTON - PRELIMINARY REPORT AND REMEDIAL <br /> ACTION PLAN <br /> i <br /> We have reviewed the 31 August 1989 Preliminary Report, and the 15 ' <br /> September Proposed Remedial Action plan, both prepared by Dames & Moore <br /> for this site. The investigation included installation and sampling of <br /> three on-site ground water monitoring wells. Based on the results of this <br /> investigation the proposed remedial action is to remove contaminated soil <br /> and sample the monitoring wells on a quarterly basis for one year. <br /> No contaminants were detected in the ground water monitoring wells during <br /> the initial round of sampling. However, prior to approving the quarterly <br /> sampling program, the wells are to be resampled to confirm the results of <br /> the initial investigation. In addition to the constituents analyzed for <br /> in the initial investigation, the confirmation sampling should also <br /> include analysis for total petroleum hydrocarbons as diesel . <br /> I <br /> If you have any questions, please call me at (916) 361-5731. <br /> THOMAS D. PELTIER ' <br /> Engineering Geologist <br /> TDP/tdp <br />