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PUBLIC HtALTH SERVICTS <br /> PQU�N <br /> SAN JOAQUIN COUNTY 2.' .51 <br /> ENVIRONMENTAL HEALTH DIVISION ":. { <br /> Karen Furst, M.D., M.P.H., Health Officer <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 95202 `'FORS <br /> 209/468-3420 <br /> JUN 12 2000 <br /> DOUG STIDHAM KULJIT MANGAT <br /> CITY OF ESCALON P O BOX 35 <br /> P O BOX 248 ESCALON CA 95320 <br /> ESCALON CA 95320 <br /> RE: South County Food & Fuel SITE CODE: 1487 <br /> 1305 Escalon Ave. <br /> Escalon CA 95320 <br /> San Joaquin County Public Health Services, Environmental Health Division (PHS/EHD) <br /> has reviewed the REPORT, Groundwater Monitoring 1St Quarter 2000, dated May 11, <br /> 2000, that was submitted by Geological Technics Inc. (GTI) on behalf of the above <br /> referenced site and has the following comments. <br /> The report presents the analytical results from the groundwater monitoring and sampling <br /> event that took place at this site on April 18, 2000. Water samples from three monitoring <br /> wells were collected and analyzed for total petroleum hydrocarbons as gas (TPHg), <br /> benzene, toluene, ethylbenzene and xylene (BTEX), five oxygenates including MtBE, <br /> and EDB and 1,2-DCA. Results indicate petroleum hydrocarbon impact to groundwater <br /> only in the area of MW-1. Groundwater flow direction from this monitoring event was <br /> reported as being towards the west/north-west. This indicates that lateral definition of <br /> the shallow groundwater contaminant plume has not been made in the down-gradient <br /> direction. Vertical definition also has not been made. <br /> Please prepare a work plan to further define the vertical and lateral extent of the <br /> groundwater contaminant plume and submit it to PHS/EHD by July 21, 2000. If you <br /> have any questions or comments call Lori Duncan at (209) 468-0337. <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Lori Duncan, Senior REHS Margaret t'agorio, RE rS <br /> LOP/Site Mitigation Unit IV Supervisor, Unit IV <br /> cc: Marty Hartzell, CVRWQCB <br /> Ray Kablanow, GTI <br /> A Division of San Joaquin County Health Care Services <br />