Laserfiche WebLink
C40th Anniversary 1947-1987 <br /> BROWN AND CALDWELL Service ll • E* Excellence c¢en <br /> CONSULTING ENGINEERS f c' <br /> October 1, 1987 - <br /> ccT S1987 <br /> Mr . Doug Wilson, R.S. CNVIROMENTAL HEALTH <br /> San Joaquin County Local Health District <br /> FERfJll7/SERVICES. <br /> 1601 East Hazelton Avenue <br /> Post Office Box 2009 <br /> Stockton, California 95201 017-3308-01/3 <br /> Subject: Soil Sampling Results--ARCO Service Station 6100 , <br /> 25775 South Patterson Pass Road, Tracy, California <br /> Dear Mr . Wilson: <br /> Enclosed are the analytical results for August 7 and 25, 1987 , soil <br /> samples taken at the subject site . Sampling locations are shown on <br /> Figure 1. The analytical results are summarized in Table 1. <br /> On August 7 , 1987 , Graphic Contractors excavated additional soil at <br /> the site of the waste oil spill. Approximately 3 cubic yards of <br /> soil were removed and stockpiled on site . The excavated soil was <br /> separated into two stockpiles. One stockpile was used for visibly <br /> clean soil. The other stockpile was used for waste oil-stained <br /> soil. <br /> On August 7 , 1987 , Brown and Caldwell personnel collected three <br /> soil samples (TEA-2, TEA-3, and TEA-4) from the bottom of the <br /> excavation at a depth of approximately 2 to 3 feet. These samples <br /> were submitted to Brown and Caldwell' s (BC) state-certified <br /> laboratory in Emeryville , California. <br /> After sample collection, the excavation was backfilled with the <br /> April 17 and 21 and May 1, 1987 , stockpiled soil. The stockpiled <br /> soil was determined to be free of hydrocarbon product, based on the <br /> June 23 , 1987 , soil sampling results . <br /> On August 25 , 1987 , BC personnel collected soil samples TSP-4 and <br /> TSP-5, one from each of the two stockpiles. These samples were <br /> submitted to state-certified Eureka Laboratories, Inc. , in <br /> Sacramento, California. <br /> The soil samples were analyzed for total petroleum fuel hydrocarbons <br /> (U.S. Environmental Protection Agency (EPA) Method 8015 , modified) , <br /> solvents (EPA 8010) , benzene , toluene , and xylene (BTX) (EPA 8020) , <br /> and pesticides and polychlorinated biphenyls (PCBs) (EPA 8080) . <br /> Soil samples TEA-2 and TEA-4 had detectable EPA 8015 , modified <br /> constituents in the motor oil range, and the EPA 8010, constituent <br /> Freon 113 . No desiganted levels have been established for EPA 8015 , <br /> modified total petroleum fuel hydrocarbon constituents. The Freon <br /> 723 S STREET SACRAMENTO,CA 95814 • (916)4440123 <br />