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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates AvenueSuite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> q1W Analytical 819 sr-k-Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 06ndwater'rechnology Client Project 6 Chevron #9-1918, Stockton, CA' Sampled ' Jun I" 1995 <br /> 1401 Halyard Drive, Suite 140 Sample Matrix Sod Received Jun 2, 1995 <br /> West Sacramento, CA 95691 Analysis Method EPA 5030/8015/8020 Reported Jun 6, 1995- <br /> Attention Jason Fedota First Sample # 506-0120 <br /> n ntiYry r tvr v } .+yt.+yn n �w { fµ } • • .. v h 4 n i 4 r f,r qt <br /> M1 JY <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I.D. I D l D. I.D I D <br /> mg/kg 506-0120 506-0121 5006-0122 506-0123 508-0124 506-0125 <br /> SB10-16 5 SB10-21 5 SB 10-26 5 SB10-31 0 SB10-36 0 1 SB10-41 5 <br /> Purgeable <br /> Hydrocarbons 10 ND NO 2,400 NO 10 NO <br /> Benzene 00050 ND ND NO NO ND ND <br /> Toluene 00050 ND ND 1 1 ND NO ND <br /> Ethyl Benzene 00050 N D N D 54 N D N D N D <br /> 110 Total Xylenes 00050 N D N D 71 N D 0 023 N D <br /> Chromatogram Pattern - - Weathered -- weathered <br /> Gasoline Gasoline <br /> C6-C12 C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 50 1 0 1 0 1 0 <br /> Date Analyzed 6/2/95 6/2/95 6/2/95 6/2/95 6/5/95 6/2/95 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 90 86 90 79 78 88 <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 /> Linda C Schneider <br /> Project Manager <br /> 5060120 GRW <1> <br />