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Sequoia 680 Chesapeake Drive redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wtget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> X1,7 -Analytical 819 Striker Avenue,Suite 9 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> IS <br /> Brown & Caldwell Client Project ID Arco 2133, Stockton <br /> Sampled Dec 15, 1995 <br /> 9616 Micron Ave , Suite 600 Sample Matrix Water Received Dec 15, 1995 <br /> Sacramento, CA 95827 Analysis Method EPA 5030/8015/8020 Reported Jan 3, 1996 <br /> Attention Steve Misner First Sample# 512-0901 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit I D <br /> Etg/L 512-0901 <br /> EFF <br /> Purgeable <br /> Hydrocarbons 50 790 <br /> Benzene 050 24 <br /> Toluene 050 2 6 <br /> Ethyl Benzene 050 82 <br /> Total Xylenes 0 50 49 <br /> Chromatogram Pattern Gasoline <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 <br /> Date Analyzed 12/26/95 <br /> Instrument Identification GCHP-2 <br /> Surrogate Recovery, % 95 <br /> (QC 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 /> 0Z: - c <br /> Janet H an <br /> Project Manager <br /> 5120901 SRS <I> <br />