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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM e Concord California 94520 <br /> (415) 686-9600 a 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 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 # 106-0607 Reported Jun 27, 1991 <br /> { <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) (Rpm) <br /> 106-0607 S-60-81 84 0 069 022 0 075 050 <br /> 106-0608 S-68.81 N D 0 035 0 034 00072 0 042 <br /> Detection Limits: 10 00050 00050 00050 00050 <br /> Low to Medium Boding Point Hydrocarbons are quantitated against a gasoline standard <br /> *lytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL <br /> Yl�I i <br /> 1�'Y <br /> Ju is R M�erstein <br /> Pr ject Manager 1060603 APS <3, <br />