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i <br /> 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 30, 1991 <br /> 3164 Gold Camp Drive, Suite 200 Matrix Descript Air Received Dec 31, 1991 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5430/8015/8020 Analyzed Dec 31, 1991 <br /> Attention Eloise Frick First Samole # 112-0587 Reported Jan 3, 1992 <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/m3 rig/m3 mg/m3 mg/m3 mg/m3 <br /> 112-0587 AS-1230-1NF2 69 000 2,100 1,600 67 190 <br /> I 112-0588 AS-1230-iNF3 100,000 6,600 6,000 340 930 <br /> 112-0590 AS-1230-IN1=4 52 000 1,700 1,100 67 190 <br /> Detection Limits, 2,500 25 25 25 25 <br /> Low to frtadwm Boding Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N 0 were not present above the stated hrnrt of detection Because matrix effects and/or other factors <br /> . required additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL <br /> 'f 41 <br /> Michael R. Giles <br /> Laboratory Director 1120585 RES <3> <br />