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SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue Suite LM • Concord, California 94520 <br /> (510) 686-9600 • FAX (510) 686-9689 <br /> I*Kaprealian Engineering, Inc Client Project M Unocal 2835 Navy Drive Stockton Sampled Apr 29, 1992 <br /> 2401 Stanwell Drive Matrix Descript Soil Received Apr 30 1992 <br /> Concord, CA 94520 Analysis Method EPA 5030/8015/8020 Analyzed Apr 30, 1992 <br /> Attention Mardo Kaprealian, P E First Sample# 204-1289 Reported May 1, 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/kg mg/kg mg/kg mg/kg mg/kg <br /> (ppm) (Ppm) (Ppm) (ppm) (ppm) <br /> 204-1289 Comp D 48 N D 0 029 0 044 037 <br /> 204-1290 Comp E 79 N D 0 048 0 064 0158 <br /> 204-1291 Comp F 44 0 011 N D 0 053 018 <br /> 204-1292 Comp G 170 0 055 0 070 Oil 064 <br /> I <br /> I <br /> Method Detection Limits 10 00050 0.0050 00050 00050 <br /> Low to Medium Boding Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not present above the stated limit of detection <br /> *SEQUOIA ANALYTICAL. <br /> Scott A Chleffo <br /> 2041289 KEI <1 <br /> Project Manager <br />