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• SITE A <br /> SSESSMENT SUMMARY REPORT , <br /> March 1996 <br /> Calkins Trucking <br /> ' 19501 North Highway 99 <br /> Acampo, California <br /> 1.0. INTRODUCTION/SCOPE OF WORK <br /> In accordance with the request of Mr. Les Calkins, A&,anced GeoEnvironmental, Inc. (AGE) has <br /> prepared this Site Assessment Summary Report for 19501 North Highway 99, Acampo, California <br /> (the site). The report summarizes excavation and soil sampling procedures performed at the site from . <br /> ' 1993 to 1995 and presents the available,results of laboratory analyses. The location of the site is <br /> illustrated in Figure I -Location Map. A plan of the site is illustrated in Figure 2 - Site Plan. <br /> ' This report is prepared in accordance with a,directive from the San Joaquin County Public Health <br /> Services -Environmental Health Division(PHS-EHD)presented in a letter dated 14 November 1995. <br /> 2.0. BACKGROUND <br /> lie -2.1. SITE LOCATIONBACKGROUND <br /> ' The site area is located in an agricultural area of low topographic relief south of Acampo, California, <br /> near the intersection of Highway 99 and Woodbridge Road. In 1957,three underground storage tanks <br /> (USTs) were installed at the site; two I0,000-gallon diesel USTs and a 550-gallon gasoline UST. <br /> 2.2. UNDERGROUND STORAGE TANK REMOVALS <br /> ' On 20 December 1991, the three USTs were removed from the site b <br /> . y Claude C. Wood, Co. of c. Lodi, <br /> California:Underground Tank Closure/Abandonment Inspection reports on file with the PHS-END <br /> ' indicate that all tanks and piping were in poor conditions upon removal. Ground water was <br /> encountered in the excavation. <br /> After removal of the USTs, FGL Environmental of Stockton, California, collected soil and e�etmd <br /> water samples from the site: four soil samples were collected from stockpiled soil; one grab gfeei4 <br /> water sample was collected from the excavation. Total petroleum hydrocarbons quantified as diesel ' <br /> (TPH-d) and volatile aromatics(benzene, toluene, ethyl benzene and xylenes: BTE&X) were detected <br /> in the stockpile soil samples at concentrations as high as 1,460 mg/kg (milligrams per.kilogram; <br /> equivalent to' parts per million: ppm). TPH-d and xylenes were detected in the grab�d•water sample at concentrations of 10,300 and 0.63 ppm, respectively. Analytical results are summarized on <br /> • Table 1. Copies of the laboratory report are included in Appendix A. <br /> 1 <br />