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SNrFN <br /> ENVIRONMENTAL HEALTH bimSION' <br /> 304 E. Weber Ave. Third Floor <br /> ENVIRONMEN7pl TECNNOLOGfES CORPORATION <br /> Approved <br /> Denied (] <br /> November 10, 1997 Conditions <br /> 14980 _ Date 3 � by <br /> Ms. Mary Meays <br /> San Joaquin County Public Health <br /> Services, Environmental Health Division <br /> 304 E. Weber Street, Third Floor <br /> Stockton, California 95202 <br /> ub'ect: Work lan for Subsurface Investi ation at 25411 L e Tree Road, Esca��� <br /> S p g <br /> California <br /> Dear Ms. Meays: <br /> Smith Technology Corporation (acquired by ATC Associates) has prepared this workplan, on <br /> behalf of Rossetti's Market for the performance of a subsurface investigation at the above <br /> referenced site. The purpose of the subsurface investigation is to determine the vertical and <br /> horizontal extent of soil and groundwater contamination, if any, in the vicinity of the former <br /> underground storage tanks(USTs). This work being done at the direction of San Joaquin County <br /> Public Health Services Environmental Health Division (PHS/EHD). The proposed scope of work <br /> includes obtaining permits, advancing at least three soil borings, soil and groundwater sampling, <br /> laboratory analysis of selected soil and groundwater samples, and preparing a summary report. <br /> The scope of work is described in detail in the following paragraphs. <br /> SITE LOCATION <br /> The site is located on the north side of Lone Tree Road and the west side of Escalon-Bellota <br /> Road in Escalon, California, as shown on Figure 1. The location is a commercial and agricultural <br /> area and the site is currently occupied by Rossetti's Market. <br /> BACKGROUND <br /> In September 1987, one 1,000-gallon unleaded gasoline underground storage tank (UST), two <br /> 3,000-gallon unleaded gasoline USTs, one 7,000-gallon leaded gasoline UST, and all associated <br /> piping and dispensing equipment were removed and transported off-site. Laboratory analysis of <br /> soil samples collected from beneath one of the former 3,000-gallon USTs location indicated the <br /> presence of detectable concentrations total petroleum hydrocarbons. After the tanks were <br /> removed, the areas of the former tanks were backfilled. <br /> w:\14980Veports\wkp.doc 1 <br /> 1260 Graphics Drive - Modesto,CA 95351-1502 (209)579-2221 Fax(209)579-2225 <br /> Engineering Consulting • Remediation • Construction <br />