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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 /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> 1 chstone Development Client Project Ib Chevron #9-2033 <br /> Sampled Sep 9, 1996 <br /> P O Box 2554 Sample Matrix Soil Received Sep 10, 1996 <br /> Santa Rosa, CA 95405 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 11, 1996 <br /> Attention Jeff Monroe First Sample# 609-0423 <br /> OC Batch Number SP091096 SP091096 SP091096 SP091096 SP091096 SP091096 <br /> BI EXA 8020ExATOTAL PURGEABLE PETROLEUM HYEXA DROCARBONwith BTX DIEXA STINCTION <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 609-0423 609-0424 609-0427 609-0428 609-0429 609-0431 <br /> T1-15' T2-15' T5-15' T6-15' UO-12' P2-3 5 <br /> Purgeable <br /> Hydrocarbons 10 1 1 N D 840 N D N D N D <br /> Benzene 00050 N D 0 027 088 N D N D N D <br /> Toluene 00050 N D N D 14 N D N D N D <br /> Ethyl Benzene 00050 N D N D 98 N D N D N D <br /> Total Xylenes 00050 00064 017 77 00095 N D N D <br /> MTBE 0 050 40 26 74 027 N D N D <br /> Chromatogram Pattern Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 5 0 100 1 0 1 0 1 0 <br /> Date Analyzed 9/10/96 9/10/96 9/10/96 9/10/96 9/10/96 9/10/96 <br /> Instrument Identification HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 103 104 90 97 96 95 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> SEQUQIA ANALYTICAL, #1271 <br /> Q <br /> Melissa A Brewer <br /> Client Services Representative <br /> 6090425 TOLD <2> <br />