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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 #2130 Stockton Sampled Dec 16, 1991 <br /> 3164 Gold Camp Drive, Suite 200 Sample Descnpt Soil, S-31-63 Received Dec 18, 1991 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015/8020 Analyzed Dec 20, 1991 <br /> Attention Eloise Frick Lab Number 112-0443 Reported Dec 26 1991 <br /> TOTAL PETROLEUM FUEL HYDROCARBONS WITH BTEX DISTINCTION (EPA 8015/8020) <br /> Analyte Detection Limit Sample Results <br /> mg/kg (ppm) mg/kg (ppm) <br /> Low to Medium Boiling Point Hydrocarbons .. ..... 250 <br /> 3,000 <br /> Benzene . 1 3 1.4 <br /> Toluene—, 1 3 37 <br /> Ethyl Benzene,. . 1 3 22 <br /> X lenes �., 13 130 <br /> r' <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> Maires reported as N D were not present above the stated limit of cietect�an Because matrix effects ane/or other factors <br /> required additional sample dilution,detection limits for mis sample have been raised <br /> SEQUOIA ANALYTICAL <br /> /�� C <br /> Michael R Giles <br /> Laboratory Director 1120436 RES <2> <br />