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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue a Suite LM • Concord California 94520 <br /> (415) 686-9600 0 FAX (415) 686-9689 <br /> Applied GeoSystems(Sacramento) Client Project ID Arca#2130-90-1/Stockton Sampled Jun 24, 1991 <br /> 4191 E Power Inn Rd Matrix Descnpt Sod Received Jun 25, 1991 <br /> Sacramento, CA 95826 Analysis Method EPA 5030/8015/8020 Analyzed Jun 25, 1991 <br /> Attention Eloise Frick First Sample# 106-0609 A-D 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 /> 1060609 A-D S,624-SP1(A-0) 190 0 069 066 12 75 <br /> Detection Limits 20 0 010 0 010 0 010 0 010 <br /> Low to Medium Boiling Point Hydrocarbons are quantitated against a gasoline standard <br /> W <br /> ytes reported as N D were not present above the stated limit of detection Because matrix effects and/or other factors <br /> tred additional sample dilution,detection limits for this sample have been raised <br /> SEQUOIA ANALYTICAL <br /> Y <br /> `Ju is R M erstem <br /> Pr ject Manager 10606M APS <4> <br />