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— d <br /> i' <br /> I <br /> INC. <br /> July 14, 1997 <br /> Mr. Ron Roe <br /> San Joaquin County Public Health Services,. <br /> Environmental Health Division <br /> 304 East Weber Street,Third Floor <br /> P.O. Box 388 i <br /> Stockton, California 95201-0388 !{ <br /> Subject: Letter Workplan and Permit Application for Additional Soil Borings for <br /> the Friendly Chevrolet Property Project Located at 2996 South McHenry 1 <br /> Avenue, Escalon, California(Site). <br /> Versar Project No. 3375-054 <br /> Dear Mr. Roe: <br /> Versar, Inc. (Versar)on behalf of Heller First Capital-Corporation(Heller) is conducting <br /> environmental consulting services at the above-referenced Site. Versar has prepared this letter <br /> workplan and permit application as per San Joaquin County Public Health Services requirements <br /> for soil borings. The following presents the background and proposed scope of work. Figures 1 <br /> and 2 show Site location and Site layout, respectively. <br /> BACKGROUND <br /> On June 12, 1997, Versar drilled seven boreholes at the Site to assess the soils in the area <br /> of former gasoline (USTs),'the former waste oil UST, and hydraulic lifts. A groundwater sample <br /> was collected from the drinking water well at the Site. Low concentrations of total petroleum <br /> hydrocarbons as hydraulic oil (TPH-HO) detected in the soil beneath the hydraulic lifts at the <br /> Site. See Figure 2 in Attachment I for boring locations. <br /> SCOPE OF WORK <br /> The results of the soil sampling conducted at the Site on June 12, 1997, indicate that the <br /> soils beneath the hydraulic lifts are impacted with low concentrations of TPH-HO. Versar <br /> proposes conducting an additional subsurface investigation to assess the vertical extent of the <br /> hydraulic oil-impacted soil Five soil borings will be installed in the areas of borings B-3,B-4, 1 <br /> B-5, B-6, and B-7 where the presence of hydraulic oil was encountered during the June 12, 1997,. j <br /> investigation(Figure 2). The soil borings will be drilled to a maximum depth of 15 feet below <br /> ground surface (bgs)with the aid of a truck-mounted, Geoprobe'direct-push drilling rig. The <br /> soil borings will be continuously cored and the cores logged by a geologist. Two soil samples . <br /> H:\PROJECTS\HELLER\LETTER.WP <br /> • SACRAMENTO OFFICE <br /> 7844 MADISON AVENUE,SUITE 167•FAIR OAKS,CALIFORNIA 95628•TELEPHONE:(916)962-1612 FAX:(916)962-2678 <br /> 1 <br />