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CONtRUCTION TESTING IENGINEEMNG, INC. <br /> Gl SAN DIEGO,CA RIVERSIDE,CA VENTURA,CA TRACY,CA LANCASTER,CA • SACRAMENTO,CA <br /> 4V 2414 Vineyard Ave. 490 E.Princeland Ct. 1645 Pacific Ave. 242 W.Larch 4215610th St.W. 3628 Madison Ave. <br /> G° Suite G Suite 7 Suite 105 Suite F Unit K Suite 22 <br /> Escondido,CA 92029 Corona,CA 91719 Oxnard,CA 93033 Tracy,CA 95304 Lancaster,CA 93534 N.Highlands CA 95660 <br /> (760)746.4955 (909)371-1890 (805)486.6475 (209)839-2890 (661)726.9676 (916)331-6030 <br /> ENGINEERING,INC. (760)746-9806 FAx (909)371.2168 FAx (805)486-9016 FAx (209)839-2895 FAx (661)726-9676 FAx (916)331.6037 FAx <br /> April 18, 2002 CTE Job Number: 20-0445B <br /> Mr. Michael J. Infurna, Jr., Senior REHS <br /> San Joaquin County = <br /> Site Mitigation Unit IV/LOP �'• <br /> 304 E. Weber Avenue, Third Floor <br /> Stockton, California 95201-0388 <br /> Subject: Workplan For Soil Investigation <br /> Proposed El Dorado Apartments Development <br /> Stockton, California <br /> Dear Mr. Infurna: <br /> This workplan outlines procedures for the proposed assessment of potentially hydrocarbon- <br /> contaminated soil encountered during recent geotechnical explorations by another firm at the <br /> referenced site. Figures 1 and 2 are maps showing the location and layout of the site. This work <br /> plan was prepared based on regulatory agency requirements and anticipated site subsurface <br /> conditions. As our client is interested in beginning this work as soon as possible we would <br /> appreciate your prompt review. <br /> SITE BACKGROUND <br /> The potentially hydrocarbon-contaminated soil was encountered in the southern portion of the site at <br /> the approximate locations shown on Figure 2. According to information relayed by our client the <br /> potentially hydrocarbon-contaminated soil was observed at depths of between 8 and 15 feet below <br /> grade (Ibg) in the indicated borings. <br /> The San Joaquin Assessor's Parcel Numbers for the site are 167-070-02 and—03. Currently,the site <br /> is undeveloped. Recent site photos are appended to this document. The site is in an area of generally <br /> mixed properties. Nearby businesses include the Heinz processing plant, a retail gasoline service <br /> station, warehouses (used for flea markets). However, land in the area is also used for parks, <br /> schools, and trailer parks. The site is bounded on its east and north sides by McKinley Park (a <br /> municipal park),on its west side by El Dorado Street,and on the south by a developed parcel. The <br /> developed parcel to the south is surfaced with asphalt pavements and there are three structures on it. <br /> These structures include a vacant gasoline service station(at the extreme southwestern corner of that <br /> parcel and some distance from the study site),a single-story,wood-frame structure,and a warehouse <br /> structure (used for flea markets). <br /> GEOTECHNICAL • ENVIRONMENTAL 9 CONSTRUCTION INSPECTION AND TESTING 0 CIVIL ENGINEERING 0 SURVEYING <br />