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Sequoia 680 Chesapeake Dnve 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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> vChstone Development Client Project ID Chevron #9-2033 Sampled Se 1 <br /> p p 1 1996 <br /> P O Box 2554 Sample Matrix Soil 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# 609-0640 <br /> QC Batch Number SP091996 SP091996 SP092096 SP092096 SP092096 SP092096 <br /> !EXA 8020FATOTAL PURGEABLE PETROLEUM HYEXA DROCARBONS AREXA BONwith BTEX 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 609-0640 609-0641 609-0642 609-0643 609-0644 609-0645 <br /> TXS4-15' TXS5-15' TXS6-16' PXB1-6' PXB2-6' PXB3-6' <br /> Purgeable <br /> Hydrocarbons 1 0 1 2 N D N D N D 1,700 2 7 <br /> Benzene 00050 00052 0 031 00093 0 010 32 0 40 <br /> Toluene 00050 00065 N D N D N D 0 89 0 011 <br /> Ethyl Benzene 00050 N D N D N D N D 12 0 12 <br /> i <br /> Total Xylenes 00050 0 024 00084 00083 00067 17 0 071 <br /> Chromatogram Pattern Gasoline - Gasoline& Gasoline <br /> Unidentified <br /> Hydrocarbons <br /> Quality Control Data >C8 <br /> Report Limit Multiplication Factor 1 0 10 1 0 1 0 100 2 0 <br /> Date Analyzed 9/19/96 9/19/96 9/23/96 9/23/96 9/20/96 9/23/96 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-5 <br /> Surrogate Recovery, % 100 99 99 101 92 103 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL, #'1271 <br /> ev)-"�� Q <br /> Melissa A Brewer <br /> Client Services Representative <br /> 6090634 TOU <2> <br />