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-f <br /> r <br /> PP __...... __ <br /> A /led Geosyslems 3191•E poN+rr Inn Road, SacramenRo,CA 95826 [91 61 AN JOSE <br /> • FREh10NT • IRVINE <br /> •Y{OUSTON •BOSTON •SACRAMENTO •CULVER CITY •5JOSE <br /> September 17, 1990 <br /> 0824KCHR <br /> AGS 38048-4 <br /> ® Mr. Kyle Christie <br /> ARCO Products Company <br /> P.O. Box 5811 <br /> San Mateo, California 94402 <br /> ® Subject: Status Leter Station Not 760,E225 South Cherokee Limited eLanental ILLodi, California.nvestigation at ARCO 5eniicc <br /> Mr. Christie: <br /> r At the request of ARCO Products Company (ARCO), Applied GeoSystem-, is submitting <br /> this letter concerning the soil investigation at the subject site. The site is on the northwest <br /> corner of the intersection of Lodi Avenue and South Cherokee Lane.as,9hown on the Site <br /> Vicinity Map (Plate P-1). <br /> Three soil borings (B-1 through B-3) were drilled gear the former waste-oil cavity between <br /> May 30 and June 1, 1990, in accordance with our Work Plan dated April 23, 1990. The <br /> approximate locations of the soil borings along with other site characteristics are shown on <br /> the Generalized Site Plan (Plate P-2). <br /> Tables 1 and 2 summarize the laboratory results of our May investigation: copies of the <br /> laboratory reports and chain of custodies are attached. Laboratory analyses indicate the <br /> concentration of total oil and grease (TOG) was below detection limits in the soil sample <br /> at 25 feet below grade in boring B-1 (S-25-131),and at 15 feet below grade in boring B-2(S- <br /> 15-132) and in boring B-3 (S-15-B3). These analyses delineate the vertical extent of waste <br /> oil in soil. Soil samples collected at 35, 45 and 55 feet below grade and submitted to the <br /> laboratory for total petroleum hydrocarbon,benzene,toluene,ethylbenzene,and total xylene <br /> isomers analyses were submitted to the laboratory after the holding time expired. <br /> Laboratory analyses indicate the lateral extent of the total oil and grease in soil was not <br /> defined south of the former waste-oil tank cavity. Results indicate concentrations of 303 <br /> parts per million (ppm) of TOG in the soil sample collected at 10 below grade (S-10-B3). <br /> �„ Laboratory analysis of a soil sample from 20 feet below grade in baring B-i (5-20-81) <br />