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PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> N: a <br /> JOGI KHANNA M.D.,M.P.H. <br /> Health Officer <br /> • <br /> P.O. Box 2009 • (1601 East Hazelton Avenu ) • Stockton, California 95201 <br /> UC'9 L I F 64,15 <br /> (209) 468-34 <br /> LAURINO AND MARY LOU PONTES <br /> PONTES QUICKI-KLEEN CAR WASH <br /> 19441 SUTLIFF JUL 993 <br /> rt ESCALON.CA .95320 <br /> RE: Pontes Quicki-Ween Car Wash SITE CODE: 1466 <br /> 707 East Yosemite Ave <br /> Manteca CA 95336 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has completed review of the "Soil Boring Invest gation Results Report" dated June 30, . <br /> 1993 and prepared by Aegis Environmental. P S/EHD has also recently reviewed the <br /> Canonie lab report dated January 26, 1987. P S/EHD has the following comments for <br /> your considers#ion. <br /> The 1987 Canonie report included the analyti al results from samples collected on <br /> January 14, 1987 from the excavation associated with a failed tank precision test and a <br /> piping replacement. Petroleum hydrocarbon cc ntaminabon was evidence up to 1,500 <br /> ppm Total Extractable Hydrocarbon, 30 ppm Other Volatile Hydrocarbon, 2 ppm Toluene, <br /> and 26 ppm Xylene. As you indicated, during he July 13, 1993 consultation, the soil <br /> samples were collected at between 10 and 12 fee t below ground surface. Contamination <br /> which was documented poses a threat to gro indwater. According to San Joaquin <br /> County Flood Control, seasonal high (1986) dep h to groundwater is 15 feet. Additional <br /> soil and groundwater investigation will be neces ary, in order to determine the extent of <br /> "- soil-and/or-groursd►Vatdr'contamination'ii►^miniA uR1-of th�Ee monitoring`w2lls `shoutd"be""` W' <br /> installed so the site gradient can be determined. Existence of a downgradient well will <br /> be required to determine if groundwater has ben impacted. <br /> The 1993 Aegis report included the analytical res ilts, .008 ppm Xylene,from soil samples <br /> collected at 15 feet on June 23, 1993. The investigation was part of an environmental <br /> assessment, prior to a potential property sale transaction. The results of the assessment <br /> should be included in the site investigation. <br /> Enclosed is a Notice of Reimbursement (NOR) aid information regarding the placement <br /> of your site in the Local Oversight Program (LOP I. PHS/EHD will provide lead regulatory <br /> oversight of the investigation and remediation of your site. <br /> I <br /> i <br /> A Division of San Joaquin County Heat h Care Services <br />