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(D Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(4t5) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> IQF Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)931 0100 <br /> lchstone Development Client Project Ib Chevron #9-2033 Sampled Se <br /> P O Box 2554 � p p 9, 1996 <br /> 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# 609-0425 <br /> QC Batch Number SP091096 SP091096 SP091096 SP091096 SP091096 SP091096 <br /> TOTAL PURGEABLE PETROLEUM HYEXA DROCAREXA BONS withBBT X DIEXA STINCTION <br /> CTION EXA e020ExA <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 609-0425 609-0426 609-0430 609-0432 609-0435 609-0436 <br /> T3-15' T4-15' P1-1 5 P3-3 5 P6-3 5 P7-4 <br /> Purgeable <br /> Hydrocarbons 1 0 1,300 N D 190 N D 3,000 97 <br /> Benzene 00050 069 0 029 027 N D 26 032 <br /> Toluene 00050 36 N D 062 N D 20 Oil <br /> Ethyl Benzene 00050 15 N D 3 4 N D 47 014 <br /> Total Xylenes 00050 83 010 13 0 016 240 0 78 <br /> MTBE 0 050 26 24 N D 030 N D 0 49 <br /> Chromatogram Pattern Gasoline - Gasoline Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 50 50 25 1 0 100 50 <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, % 92 101 98 92 86 93 <br /> (QC 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 /> S QUOIA ANALYTICAL, #1271 <br /> Melissa A Brewer <br /> Client Services Representative <br /> 6090425 TOU a 1> <br />