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■ ` Sequoia - 68o Chesapeake Dnvc Ped-ood C,ry C4 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek C4 94598 (510) 988 9600 FAX (510)988 9673 <br /> Analytical 819 Sinker Avenuc,Strict 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 10Paclflc Environmental Group, Inc -Client Project ID Arco 2133, Stockton Sampled Mar 19 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 # 603-1019 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID ID <br /> yg/L 603-1019 603-1020 603-1021 603-1022 603-1023 603-1024 <br /> E-6 E-7 E-8 E 9 E-10 E-1i <br /> Purgeable <br /> Hydrocarbons 50 1,200 N D 2,000 8,800 370,000 2,000 <br /> Benzene 0 50 14 N D 19 290 7,300 24 <br /> Toluene 050 N D N D N D 130 2,200 N D <br /> Ethyl Benzene 050 24 N D 93 240 9,900 43 <br /> Total Xylenes 050 27 N D 13 490 62,000 65 <br /> Chromatogram Pattern Weathered -- Weathered Weathered Gasoline Weathered <br /> Gasoline Gasoline Gasoline C6-C12 Gasoline <br /> C6-C12 C&C12 C&C12 C6-C12 <br /> Quality Control Data <br /> Report Llmlt Multiplication Factor 10 10 10 10 2,000 1 0 <br /> Date Analyzed 03/28/96 03/28/96 03/28/96 03/28/96 03/30/96 03/28/96 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 90 74 89 82 89 109 <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 /> inda C Schneer <br /> Project Manager/Sacramento Laboratory <br /> 6031010 PES <3> <br />