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^ D <br /> ` PUBhK HEALTH SEVICES <br /> SAN JOAQUIN COUNTY <br /> H): 1. a <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> P.O. Box 2009 . (1601 East Hazelton Avenue) Stockton,California 95201 / <br /> C4��FOR N`P <br /> (209) 468-3400 <br /> May 9, 1990 <br /> Moore Petroleum <br /> Jerry Moore <br /> P.O. Box 67 <br /> Banta, CA 95304 <br /> RE: 5491 "F" St. IN REPLY REFER TO SITE CODE: 1502 <br /> Banta, CA <br /> San Joaquin County, Public Health Services, Environmental Health <br /> Division (PHS/EHD) has reviewed the September 8, 1989, "PRELIMINARY <br /> HYDROGEOLOGIC ASSESSMENT REPORT" prepared by Delta Environmental <br /> Consultants, Inc. , for this site. Two additional ground water <br /> monitoring wells were installed during this phase of investigation. <br /> The report summarizes information from a past investigation, and <br /> includes analytical results for one complete round of sampling. <br /> Based on the levels of hydrocarbon contamination detected, three <br /> additional ground water monitoring wells are proposed. <br /> The proposed well locations appear adequate for investigating water <br /> quality in the vicinity of the underground storage tank area. We <br /> recommend that all new and existing wells be sampled to confirm <br /> analytical results. We also recommend that after purging the wells <br /> the samples be taken with a bailer, rather than by pumping, to <br /> assure that the samples are not being affected by the <br /> polyvinylchloride tubing used in the pump. <br /> A "Problem Assessment Report" should be submitted to San <br /> Joaquin County Public Health Services, Environmental Health <br /> Division (PHS/EHD) by July 15, 1990. <br /> All proposals and reports submitted must be accompanied by a Letter <br /> of Acknowledgment from the responsible party(ies) (sample <br /> enclosed) . <br /> The San Joaquin County PHS/EHD will continue to review proposals <br /> for the purpose of compliance to local ordinance requirements for <br /> permits for certain activities such as borings, monitoring <br /> wells/piezometers, vapor probe surveys, extraction systems, etc. <br /> cu �' � <br /> U <br /> A Division of San Joaquin County Health Care Services <br />