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HEALTH SERVICESPUBI�IC .� <br /> SAN JOAQUIN COUNTY a y< <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> 1601 East Hazelton Avenue <br /> P.O. Box 2009 ( ) • Stockton, California 95201 <br /> (209) 468-3400 <br /> STANLEY MOORS <br /> 3737 WILSON WAYAUG 199 <br /> STOCKTON CA 95205 <br /> Re: Valley Auto Repair Site Code: 2358 <br /> 4055 North Wilson Way <br /> Stockton CA 95205 <br /> San Joaquin County Public Health Services,Environmental Health Division(PHS/EHD)has recently reviewed <br /> documents pertaining to the above mentioned site. PHS/EHD has provided comments for your consideration. <br /> Two underground storage tanks were removed on September 27, 1989,a 1,000 gallon waste oil tank, a 10,000 <br /> gallon gasoline tank and associated piping. Detectible concentrations of hydrocarbon contamination were <br /> identified in samples of the waste oil tank and gasoline piping. The detection limits used for analysis of <br /> gasoline contamination were too high for closure evaluation. While no detectible contamination was identified <br /> associated with the gasoline tank, at the time of removal it was noted that the tank had at least three holes <br /> and was leaking rinseate into the tank pit. <br /> A Leaching Potential Analysis, included in the Leaking Underground Fuel Tank (LUF1) Manual prepared <br /> by the State Water Resources Control Board,was used to evaluate the soil contamination at this site. The <br /> results of soil sampling, at the time the tanks were removed,were used to complete the Leaching Potential <br /> Analysis. The Analysis is used to evaluate if levels of contamination can be left in place without detriment <br /> to groundwater quality. The levels of residual contamination present failed the Leaching Potential Analysis. <br /> A re-sampling event was scheduled for September 17, 1990'te obtain additional data regarding the extent of <br /> documented contamination. While the results of this sampling did not detect contamination,no professional <br /> evaluation was included for PHS/EHD to consider. You have been informed, on November 26, 1990, of the <br /> requirement for a professional geologist's evaluation and recommendations. Please secure the services of <br /> either a registered geologist or a registered engineer to prepare an evaluation report. Submit this summary <br /> and evaluation report by October 25, 1992. <br /> Enclosed for your information are guidance documents which PHS/EHD utilizes to evaluate your site. If you <br /> wish to obtain a copy of the LUFt please contact our office. If you are unable to meet due dates, request <br /> in writing an extension outlining efforts made toward meeting the due date. <br /> If you have any questions, contact Mary Meays, RENS, of my staff at (209)468-0337. Ms. Meays has been <br /> assigned the oversight of your site. <br /> Jogi Khanna, M. M.P.H. <br /> Health Offi <br /> urie A. Cotulla, REHS, Program Manager <br /> Environmental Health Division <br /> LAC/MM:lb <br /> c: Elizabeth Thayer, CVRWQCB <br /> A Division of San Joaquin Counry Health tare Services <br />