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PACIFIC <br /> ENVIRONMENTAL <br /> GROUP INC. <br /> 0" <br /> id V s <br /> January 10, 1996 P <br /> Project 920-039.1A <br /> Mr. Brett Hunter <br /> Chevron U.S.A. Products Company <br /> 6001 Bollinger Canyon Road, Building L . <br /> San Ramon,CA 94583 <br /> Re: Former Chevron U.S.A. Service Station 9-6258 <br /> 2409 E. Main Street at F Street <br /> Stockton, California <br /> Dear Mr. Hunter: <br /> This letter, prepared by Pacific Environmental Group, Inc. (PACIFIC) for Chevron <br /> U.S.A. Products Company (Chevron), presents a work plan to confirm the presence of <br /> petroleum hydrocarbons at the site, and evaluate the lateral and vertical extent of <br /> petroleum hydrocarbons (if present) in soil and groundwater beneath the site. This work <br /> plan includes a brief discussion of site background, previous investigations, proposed <br /> scope of work, and a schedule. Field and laboratory procedures are presented as <br /> Attachment A. <br /> SITE BACKGROUND <br /> The site is located at the northeast corner of East Main Street and F Street in Stockton, <br /> California, situated in the northeastern portion of the San Joaquin Valley (Figure 1, Site <br /> Location Map). It is our understanding that the site is owned by the Hinaman Trust. <br /> The site is currently vacant. Formerly, Chevron Service Station 9-6258 operated at the <br /> site. The Former.facilities at the site included four underground storage tanks (USTs), <br /> associated underground piping and pump island, and a station building (Figure 2, Site <br /> Map). Four USTs were reportedly installed in 1955 and the gasoline USTs removed in <br /> 1976. No information was available regarding the removal of other underground <br /> facilities at the"site. <br /> The former USTs consisted of three gasoline fuel (5,000-gallon supreme, 2,000-gallon <br /> mid-grade, and 5,000-gallon regular) tanks of single wall steel construction located on <br /> the western portion of the site and one 550-gallon used oil tank of single wall steel <br /> construction located northeast of the former station building. <br /> 2025 Gateway Place, Suite 440, San Jose, California 95110 (408)441-7500 FAX(408)441-7539 <br /> 11315 Sunrise Gold Circle, Suite M, Rancho Cordova,California 95742 (916) 858-2350 FAX(916) 858-2355 <br />