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SEQUOIA ANALYTICAL <br />. 819 Striker Avenue, Suite 8 - Sacramento, CA 95834 <br /> (916) 921-9600 - FAX (916) 921-0100 <br /> RESNA Industries Client Project ID Arco #6100,Tracy, CA Sampled See below <br /> 3164 Gold Camp Drive, Suite 200 Matrix Descript Soil Received Oct 14, 1991 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015/8020 Analyzed Oct 18, 1991 <br /> Attention David Stavarek First Sample # 110-0129 Reported Oct 28, 1991 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS with BTEX DISTINCTION (EPA 8015/8020) <br /> Sample Sample Low/Medium B.P Ethyl <br /> Number Description Hydrocarbons Benzene Toluene Benzene Xylenes <br /> mg/kg mg/kg mg/kg mg/kg mg/kg <br /> (ppm) (ppm) (ppm) (ppm) (ppm) <br /> 110-0129 S-5-E37, 10/8/91 41 0 059 050 014 093 <br /> 110-0130 S-5-89, 10/9/91 42 028 0 080 047 12 <br /> 110-0133 Sa0-B9, 10/9/91 28 012 024 0 059 029 <br /> 110-0139 S-35-B11 10/10/91 22 012 028 0 063 045 <br /> i <br /> i <br /> Detection Limits. 10 0.050 0 050 0 050 0.050 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> i Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> Michael R Giles <br /> Laboratory Director 1100129 RES <1> <br />