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Sequoia 680 Chesapeake Drive Redwood City, CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek, CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> �1i�► Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> Touchstone ID Project Development Client Pro <br /> P 0 Box 2554 p 1 Chevron #9-2033 Sampled Sep 13, 1996 <br /> Sample Matrix Sod Received Sep 12, 1996 <br /> Santa Rosa, CA 95405 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 24, 1996 <br /> Attention Jeff Monroe First Sample # 609-0646 <br /> QC Batch Number SP092096 SP092096 SP092096 SP092096 SP092096 SP092096 <br /> XA BIEXA 8020ExATOTAL PURGEABLE PETROLEUM HYEXA DROCARBONS AREXA BONS WithBTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D I D <br /> mg/kg 609-0646 609-0647 609-0648 609-0649 609-0650 609-0651 <br /> PX64-6' PX65-7' PXB6-7' PX67-7' PXS1-5' PXS2-5' <br /> Purgeable <br /> Hydrocarbons 1 0 11 N D 360 1,300 1 0 58 <br /> Benzene 00050 N D ND N D 14 N D N D <br /> Toluene 00050 0 028 N D 013 10 00052 N D <br /> Ethyl Benzene 00050 0 092 N D 53 23 N D 0 015 <br /> Total Xylenes 00050 034 00081 16 94 0 027 0 046 <br /> Chromatogram Pattern Gasoline Gasoline Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 5 0 1 0 20 100 1 0 1 0 <br /> Date Analyzed 9/20/96 9/20/96 9/23/96 9/20/96 9/23/96 9/23/96 <br /> Instrument Identification HP-2 HP-5 HP-5 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 96 101 75 120 102 94 <br /> (CSC Limits = 70-130%) <br /> Purgeabie Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> S UQIA ANALYTICAL, #1271 <br /> 'Watk"Ca- a &&LLP� <br /> Melissa A Brewer <br /> Client Services Representative <br /> 6090634 TOU <3> <br />