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3164 Gold Camp drive "- <br /> Delta Site 200 <br /> Gold%Alk <br /> Rancho Cordova, CA 95670 <br /> ironmental <br /> Env9161638-2085 <br /> Consultants,Inc. FAX:9161638-8385 <br /> December 20, 1995 <br /> RECEIVED <br /> I <br /> Mr. Kenneth Earnest <br /> Ultramar Inc. <br /> 525 West Third Street <br /> Hanford, CA 93230 <br /> Subject: Response to San Joaquin County, Environmental Health Division's Letter of Nov 14, 1995 <br /> Beacon Station No. 502 <br /> 35 North Cherokee Lane <br /> Lodi, California <br /> Delta Project No. DO93-907 <br /> Dear Mr. Earnest: <br /> Ultramar, Inc. (Ultramar)has requested that Delta Environmental Consultants, Inc. (Delta), respond <br /> to your letter dated November 14, 1995 regarding the above-referenced site. Delta's response to each <br /> of your requests are as follows: <br /> 1) An accurate site map, including the areas, over-excavated in relationship to wells and soil <br /> borings. <br /> A Figure 6 from Delta's Site Closure Evaluation Report (Closure Report) dated <br /> June 1, 1995, has been edited to illustrate the extent of the area over-excavated <br /> to an approximate depth of 26 feet. <br /> 2) A cross section depicting residual soil contamination with mass volume calculations. <br /> • A cross-section C-C' has been.prepared and Figures A and B to show the status' <br /> of hydrocarbons in soil, <br /> • The mass volume calculations,were done in the Closure Report and are attached <br /> for your convenience. <br /> 3) An accurate account of the VES, including calculations and/or contours of the zone of <br /> influence and operation times. <br /> The attached Table 1 summarizes the VES operations. <br /> A According to the data provided in EVAX Technologies, Inc. report dated <br /> September 21, 1989 (attached), the capture radius averages 44 feet. <br /> irz ' <br /> Providing a Competitive Edge <br />