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4D <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 ISI Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> WOAnalytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> 4puchstone Development Client Project lb Chevron #9-20 <br /> 1 33 Sampled Sep 11, 1996 <br /> P O Box 2554 <br /> Sample Matrix Soil Received Sep 12, 1996 <br /> Santa Rosa, CA 95405 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 17, 1996 <br /> Attention Jeff Monroe First Sample# 609-0608 <br /> QC Batch Number SP091396 SP091396 SP091396 SP091396 SP091396 SP091396 <br /> aI8020ExATOTAL PURGEABLE PETROLEUM HYEXA DROCAREXA BONS wlthBTX DIEXA STINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D € D I D <br /> mg/kg 609-0608 609-0609 609-0610 609-0611 609-0612 609-0613 <br /> SP-4(A-D) SP-5(A-D) SP-6(A-D) SP-7(A-D) SP-8(A-D) SP-9(A-D) <br /> Purgeable <br /> Hydrocarbons 1 0 91 250 390 340 360 330 <br /> Benzene 00050 013 1 4 019 N D 024 2 0 <br /> Toluene 00050 016 20 1 7 052 0 78 21 <br /> Ethyl Benzene 00050 029 30 3 0 1 6 1 7 48 <br /> • <br /> Total Xylenes 00050 1 8 13 17 13 13 15 <br /> Chromatogram Pattern Gasoline Gasoline Gasoline Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 20 50 25 20 20 20 <br /> Date Analyzed 9/13/96 9/13/96 9/13/96 9/13/96 9/13/96 9/13/96 <br /> Instrument Identification HP-5 HP-5 HP-5 HP-5 HP-5 HP-5 <br /> Surrogate Recovery, % 80 84 74 72 72 85 <br /> (OC Limits = 70-130°/x) <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 /> *Aa�� a &,, <br /> Melissa A Brewer <br /> Client Services Representative <br /> 6090608 TOU <1> <br />