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Sequoia 680 Chesapeake Drtvc Redwood Gey CA 94063 (415) 3451 9600 FAX(415) 364 9233 <br /> 404 N Wigcc Lane Walnuc Crock CA 94598 (510) 988 9600 FAX <br /> VW Analytical 819 Scnker Avcnue Suice 8 Saerame (9 t 6) 921 9600 FA <br /> nco, CA 95834 (916)`188 9673 <br /> FAX{915)921 0100 <br /> Pacific Environmental Group, Inc Client Project ID Arco 2133, Stockton Sampled Mar 18 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix Water Received Mar 21, 1996 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8015/8020 Reported Apr 3, 1996 <br /> Attention Greg Barclay First Sample # 603-1010 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D I D <br /> pg/L 603-1010 603-1012 603-1013 <br /> MW1 MW3 MW4 <br /> Purgeable <br /> Hydrocarbons 50 720 N D 58 <br /> Benzene 050 12 N D N D <br /> Toluene 050 53 N D N D <br /> Ethyl Benzene 050 24 N D N D <br /> i <br /> i Total Xylenes 050 160 N D N D <br /> Chromatogram Pattern Weathered -- Weathered <br /> Gasoline Gasoline <br /> G6-C12 C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 10 <br /> Date Analyzed 03/27/96 03/28/96 03/27/96 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 90 80 76 <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, FLAP #1624 <br /> Linda C Schneider <br /> Project Manager/Sacramento Laboratory <br /> 603101OPES ¢1n <br />