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i • <br /> Sequoia 68o Chcsapcakc Dnvc Rcdwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wigct Lanc Walnut Crcck CA 94598 (510) 988 9600 rAX(510)988 9673 <br /> Analytical 819 Stnkcr Avenuc Sunc 8 Sacramcnto CA 95834 (916) 921 9600 rAX(916)921 0100 <br /> 0 <br /> N <br /> Pacific Pnvironmerital Group, Inc Client Project Ib Chevron #9-6258, StocktA t5�� ed Sep 23, 1996 <br /> 11315 Sunrise Gold Circle, #M Sample Matrix Sod Rece Sep 24, 1996 <br /> Rancho Cordova, CA 95742 Analysis Method EPA 5030/8015/8020 Oct 1, 1996 <br /> Attention Roger Hoffmore First Sample# 609-1009 C' <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D 11.1) 1 D I D I D. <br /> mg/kg 609-1009 609-1010 609-1011 609-1012 609-1013 609-1014 <br /> WO-1 @ 10' WO.2(LD 5' PL-1 @ 6 PL-2 Q 9 T-1 @ 15 T-2 @ 15 <br /> Purgeable <br /> Hydrocarbons 10 N D N D N D N D 4,000 02 <br /> Benzene 00050 N D N D N D N D N D N D <br /> Toluene 00050 N D N D N D N D 17 00079 <br /> Ethyl Benzene 00050 N D N D N D N D 70 0 034 <br /> Total Xylenes 00050 N D N D N D N D 430 0 092 <br /> Chromatogram Pattern - Weathered Weathered <br /> Gasoline Gasoline <br /> C7-C 12 C8-C 12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 10 10 250 10 <br /> Date Analyzed 09/26/96 09/26/96 09/26/96 09/26/96 09/27/96 09/27/96 <br /> instrument identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-7 GCHP-7 <br /> Surrogate Recovery, % 87 85 77 83 96 91 <br /> (QC limas = 60-140%) <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 /> /tnda Schne der <br /> Manager/Sacramento Laboratory <br /> 6091009 PES I <br />