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j SEQUOIA ANALYTICAL <br />. 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 9 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 # 110-0131 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 /> 110-0131 S-25-89, 10/9/91 1,400 76 24 10 50 <br /> 110-0138 S-10-B11, 10/10/91 2,300 56 48 16 76 <br /> Detection Limits, 1,000 5.0 50 5.0 5.0 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> l Michael R Giles <br /> Laboratory Director 1100129 AES <2> <br />