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.s <br /> SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue • Suite LM * Concord, California 94520 <br /> (415) 686-9600 0 FAX (415) 686-9689 <br /> Kaprealian Engineering, Inc Client Project ID Unocal,7303 Pacific Ave,Stockton Sampled 10/11-12/90 <br /> P O Box 996 Matrix Descript Sod Received Oct 15, 1990 <br /> Benicia, CA 94510 Analysis Method EPA 5030/8015/8020 Analyzed 10/19-22/90 <br /> Attention Mardo Kaprealian, P E First Sample# 010-0442 Reported Oct 29, 1990 <br /> v ` ti 4 r ry .. ..v ry vi{ . ....v t 1♦ v r <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 /> 010-0442 Mw2-(29 5) N D N D 0 026 N D N D <br /> 010-0443 Mw2-(35 5) N D N D 0 014 N D N D <br /> 010-0444 Mw2-(45) N D N D 0 025 N D N D <br /> 010-0445 Mw2-(55 5) N D N D 0 015 N D N D <br /> 010-0446 Mw2-(58 5) N D N D N D N D N D <br /> 010-0447 MM3-(30 5) N D 0 088 0 034 N D N D <br /> 010-0448 MW3-(35 5) N D N D N D N D N D <br /> 010-0449 Mw3-(40 5) N D N D 0 018 N D N D <br /> 010-0450 Mw3-(50) N D N D 0 051 N D N D <br /> 010-0451 Mw3-(55) N D N D 0 044 N D N D <br /> Detection Limits 1.0 00050 00050 00050 0.0050 <br /> Low to Medium Boding Point Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as H D were not present above the stated limit of detection <br /> QEGUOIA ANALYTICAL <br /> Iia R Malerstein <br /> Project Manager 100432 KEI <2> <br />