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® SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue a Suite LM e Concord, California 94520 <br /> (415) 686-9600 • FAX (415) 686-9689 <br /> Applied GeoSystems (Sacramento) Client Project ID Arco#2130-90-1/Stockton Sampled Jun 24, 1991 <br /> 4191 E Power Inn Rd Matrix Descnpt Soil Received Jun 25, 1991 <br /> Sacramento, CA 95826 Analysis Method EPA 5030/8015/8020 Analyzed Jun 25, 1991 <br /> Attention Eloise Frick First Sample# 106-0604 Reported Jun 27, 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 /> 106-0604 S-30-81 690 17 12 89 60 <br /> 106-0605 S-45-Bt 1,400 13 75 31 170 <br /> I <br /> 106-0606 8-55-BI 520 64 35 13 66 <br /> Detection Limits- 50 0.25 025 025 025 <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 Because matrix effects and/or other factors <br /> 'uired additional sample dilution,detection limits for this sample have been raised <br /> OUOIA ANALYTICAL <br /> riaalersteln <br /> anager 1060603 APS -c2n <br />