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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (4t5) 364 9600 FAX(415) 364-9233 <br /> Analytical 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)931 0100 <br />*Brown & Caldwell Client Project ID Arco 2133-94-2, Stockton Sampled Dec 22, 1994 <br /> 9616 Micron Ave , Suite 600 Sample Matrix Soil Received Dec 22, 1994, <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8015/8020 Reported Jan 5, 1995 <br /> Attention Steve Misner First Sample # 412-0824 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D. <br /> mg/kg 412-0824 412-0825 412-0826 412-0827 <br /> MW-5 MW-5 MW-5 Stockpile <br /> 6-6 5 11-115 16-165 <br /> Purgeable <br /> Hydrocarbons 1 0 N D N D N D N D <br /> Benzene 00050 N D N D 0 010 N D <br /> Toluene 00050 N D N D N D N D <br /> Ethyl Benzene 00050 N D N D N D N D <br /> Total Xylenes 00050 N D N D 0 021 N D <br /> Chromatogram Pattern - - Gasoline <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 <br /> Date Analyzed 1/4/95 1/4/95 1/4/95 1/4/95 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 92 100 90 81 <br /> {OC Limits = 70-130%} <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, ELAP #1624 <br /> 0 C�" 4 <br /> Jennie Higgins <br /> Project Manager <br /> 4120818 BRS ¢2> <br />