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FILE COPYPUBLIC HEALTH SERVI&S ,oAQu �o <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 <br /> 209/468-3420 <br /> RAY BAGLIETOO & FRANK RAUZI SEP 112000 <br /> TULEBURGE WAREHOUSE <br /> 301 AURORA ST <br /> STOCKTON CA 95202 <br /> SITE: SPEEDY FOOD MART <br /> 8200 N HWY 99 <br /> STOCKTON CA 95212 <br /> In a telephone conversation on September 7, 2000, Groundzero Analysis, Inc. (Groundzero) <br /> expressed that in addition to the potential receptor wells identified in the Potential Raxptor <br /> Stauy(survey) dated June 26,2000 prepared by Groundzero, six domestic drinking water <br /> wells on the south side of Gnekow Drive were identified to be the closest wells to the above <br /> referenced site. These drinking water wells are located at 8338 Frontage Road/North Hwy <br /> 99,and 4418,4508,4540,4632, and 4644 Gnekow Drive. <br /> The highest level of Methyl tert Butyl Ether(MTBE) concentration in the analytical results <br /> of the monitoring well groundwater samples of the site was 44,000 parts per billion of <br /> MTBE. MTBE has been recognized as a potential human carcinogen. Due to the <br /> insolubility,propensity for vertical as well as lateral migration in groundwater, and volume <br /> used in gasoline in California of MTBE,MTBE plumes can be much larger than the plume <br /> fore can be a threat to nearby of other gasoline constituents, and there Y drinking water wells. <br /> San Joaquin County Public Health Services,Environmental Health Division (PHS/EHD) <br /> directed the above-mentioned domestic wells be sampled and analyzed at the next quarterly <br /> monitoring event which is scheduled during September 2000. <br /> Please feel free to direct any questions to Jeffrey Wong at (209) 468-0335. <br /> Donna Heran, RENS,Director <br /> Environmental Health Division <br /> I <br /> 4 <br /> Jeffrey Wong,REHS Margare�gorioRAEI-tlSeL�6 <br /> LOP/Site Mitigation Unit IV Supervisor <br />{ Cc: CRWQCB, Central Valley Region-Marty Hartzell <br /> Fax: Ground Zero Analysis,Inc. -John Lane <br /> k <br /> i A Division of San Joaquin County Health Care Services <br /> l <br />