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PUBIC HEALTH SLICES <br /> Iy <br /> Pp_U l <br /> �O.`��.COG <br /> SAN JOAQUIN COUNTY <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> P.O. Box 2009 (1601 East Hazelton Avenue) Stockton,California 95201 01 oR�' <br /> (209) 468-3400 <br /> April 20, 1990 <br /> Jerry Moore <br /> Moore Petroleum <br /> P.O. Box 67 <br /> Banta, CA 95304 <br /> RE: Frank's Exxon #2 IN REPLY REFER TO SITE CODE: 1464 <br /> 1399 E. Yosemite Ave. <br /> We have reviewed the July 25, 1989 "PRELIMINARY HYDROGEOLOGIC <br /> ASSESSMENT REPORT" prepared by Delta Environmental Consultants, <br /> Inc. , for this site. Two additional monitoring wells were <br /> installed during this phase of investigation. The report <br /> summarizes information from a past investigation, and includes <br /> analytical results for one complete round of sampling. Based on <br /> the low levels of contaminants detected, the consultant has <br /> proposed quarterly sampling of the ground water monitoring wells <br /> for a period of one year. <br /> The proposal to conduct quarterly ground water monitoring may be <br /> acceptable. However, we request that an additional round of <br /> samples be obtained and analyzed to verify the initial results <br /> prior to implementing the quarterly monitoring program. We also <br /> request that after purging the wells, the samples be taken with a <br /> bailer, rather than by pumping, to assure that the samples are not <br /> being affected by the polyethylene tubing used in the pump. <br /> As an addendum to the "PROBLEM ASSESSMENT REPORT" include your work <br /> plan for the replacement of MW#1 and submit to us by May 10, 1990. <br /> If you have any questions, contact Mr. Greg Lyon, EHS, of my staff <br /> at (209) 468-3450. <br /> Jogi Khanna, M.D. , M.P.H. <br /> Health Officer <br /> on ali oti, QHS, Director <br /> Environmental Health Division <br /> RV/GL:nr <br /> cc: CRWQCB - Gordon Boggs/Tom Peltier <br /> 3443 Routier Rd. , Sacramento, CA 95827-3098 <br /> cc: Triad Groundwater Assoc.-Darrell Nations <br /> P.O. Box 1805, Cameron Park, CA 95682 <br /> A Division of San Joaquin County Health Care Services <br />