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Sequoia 680 Chesapeake Dnvc Redwood City CA 94063 (415) 364 9600 FAX(415) 364-9233 <br /> 404 N Wiget Lane Walnut Crock,Ca 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> X117 <br /> Pacific Environmental Group, Inc Client Project ID Arco 2133, Stockton Sampled Jun 1 <br /> ! 8, 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix Water Received Jun 19, 1996 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8015/8020 deported Jul 1, 1996 <br /> Attention Greg Barclay First Sample # 606-0855 <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 /> pg/L 606-0855 606-0856 606-0857 606-0858 <br /> E-11 E-12 8H0-1 TB-1 <br /> Purgeable <br /> Hydrocarbons 50 620 N D 5,500 N D <br /> Benzene 050 11 N D 82 N D <br /> Toluene 050 9 0 N D N D N D <br /> Ethyl Benzene 050 3 2 N D 430 N D <br /> Total Xylenes 050 32 33 300 N D <br /> Chromatogram Pattern Weathered -- Weathered -- <br /> Gasoline Gasoline <br /> C6-C12 C6-C 12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 2 0 10 20 1 0 <br /> Date Analyzed 06/25/96 06/25/96 06/24/96 06/24/96 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 105 94 100 96 <br /> TQC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected at or above the reporting limit <br /> 0 SEQUOIA ANALYTICAL, ELAP #1624 <br /> inda C Schneider <br /> Protect Manager/Sacramento Laboratory <br /> 6060849PES <2> <br />