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Sequola- 680 Chesap<akc Dint Rtdwood Ciry CA 94063 (415) 364 96W FAX (415) 364 9233 <br /> 404 N Wigct Lanc Wa)nut Crcck CA 94598 (510) 1"-19600 FAX(510)988 %73 <br /> AliF Analytical 819 Sinker Avenue Swtc 8 Saenmenlo CA 95834 (91§P121 9600 FAX(916)921 0100 <br /> Pacific Environmental Group, Inc Client Project ID Arco 2133, Stockton - GSOmpied" Jun 18, 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 �(GG Reported Jul 1, 1996 <br /> Attention Greg Barclay First Sample # 606-0849 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limrt I D I D I D I D I D I D <br /> pg/L 606-0849 606-0850 606-0851 606-0852 606-0853 606-0854 <br /> IMW4 MW5 E-2 E-8 E-9 E-10 <br /> Purgeable <br /> Hydrocarbons 50 N D 15,000 550 2,300 1,600 400,000 <br /> Benzene 0 50 N D 170 54 41 110 390 <br /> Toluene 050 N D N D 1 2 4 7 32 3,600 <br /> Ethyl Benzene 050 N D N D 11 18 69 2,000 <br /> • Total Xylenes 0 50 N D 2,500 10 49 91 16,000 <br /> Chromatogram Pattern -- Weathered Weathered Weathered Weathered Weathered <br /> Gasoline Gasoline Gasoline Gasoline Gasoline <br /> C6-C12 C6-C12 C6-C12 C6-C12 06-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 50 1 0 2 0 5 0 250 <br /> Date Analyzed 06/24/96 06/24/96 6/24/96 06/24/96 06/25/96 06/24/96 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-1 <br /> Surrogate Recovery, % 89 96 102 130 73 78 <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 /> 4inda C Schnbider <br /> ct Manager/Sacramento Laboratory <br /> 6060849 PES <11> <br />