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Sequoia 680 Chesapeake Drive Redwood Cuy CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Fane Walnut Creek CA 94598 (510) 988 9600 FAX(51o) 988 9673 <br /> IQF Analytical 81951nker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> ID <br /> Geraghty & Miller, Inc Client Project ID Chevron #9-4275 Sampled Jul 14, 1997 <br /> 1050 Marina Way South Sample Matrix Soil Received Jul 15, 1997 <br /> Richmond, CA 94804 Analysis Method EPA 5030/8015 Mod /8020 Reported Jul 23, 1997 <br /> Attention Aaron O'Brien First Sample # 707-0726 <br /> CC Batch Number GC071697 GC071797 GC071697 GC071697 GC071797 GC071797 <br /> 8020EXA 8020EXA 8020EXA 8020EXA 8020EXA 8020EXA <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID ID <br /> mg/kg 707-0726 707-0727 707-0728 707-0729 707-0730 707-0731 <br /> VDSB-1 @ 5 5- VDS8-1 @ 9 5 VDSB-1 @ 18' VDSB-1 a@ 21 VDS8-1 @ 26' VDSB-1 @ 31 5 <br /> Purgeable <br /> Hydrocarbons 20 N D 84 510 2 6 32 N D <br /> Benzene 00050 N D N D 20 028 010 N D <br /> Toluene 00050 N D 0 013 1 8 0 011 0 015 N D <br /> .yl Benzene 00050 N D N D 79 0 033 0 066 N D <br /> Total Xylenes 00050 N D 0 042 11 013 014 N D <br /> MTBE 0050 ND ND ND ND ND ND <br /> Chromatogram Pattern -- Gasoline Gasoline Gasoline Gasoline -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 25 100 1 0 1 0 1 0 <br /> Date Analyzed 7/16/97 7/17/97 7/16/97 7/16/97 7/17/97 7/17/97 <br /> Instrument Identification HP-4 HP-5 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, % 84 75 600 80 73 83 <br /> (QC Limits = 40-140°/x) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N❑ were not detected above the stated reporting limit <br /> 1J0IA ANALYTICAL, #1271 Please Note <br /> Sample 707-0728 Surrogate recovery was outside of the upper Control Limit due <br /> to matnx interference <br /> Melissa A Brewer <br /> Client Services Representative <br /> 7070726 GER <1> <br />