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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510) 686 9689 <br /> Analytical 819 Stn ker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> gro West, Inc Client Project ID Shell,4315 Waterloo Road,Stockton CA Sampled Dec 7, 1994 <br /> 1050 Melody Lane, Ste 160 Sample Matrix Sod Received Dec 8, 1994 <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/8020 Reported 12/9,12/94 <br /> Attention David L Poulsen First Sample# 412-0216 <br />' TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br />' Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limrt I D I D I D. I D I D I D <br /> mg/kg 412-0216 412-0217 412-0218 412-0219 412-0220 412-0221 <br /> tPL 7 PL-8 TP-5/19 TP-N/18 T5000AW/16 T5000AE/16 <br /> PurgeaSie <br />' Hydrocarbons 1 0 20,000 1,400 14 N D 34 N D <br /> Benzene 00050 N D 54 N D N D 010 N D <br /> Toluene 00050 N D 44 N D N D 019 N D <br />' Ethyl Benzene 00050 014 25 N D N D 045 N D <br /> Total Xylenes 00050 087 150 N D N D 29 N D <br />' Chromatogram Pattern C6-C12 C6-C12 C6-C12 C6-C12 <br /> Duality Control Data <br /> Report Limit Multiplication Factor 20 100 10 1 0 20 1 0 <br /> Date Analyzed 12/12/94 12/9/94 12/9/94 12/9/94 12/9/94 12/9/94 <br /> Instrument Identification GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Surrogate Recovery, % 85 * 103 103 97 108 <br /> (QC Limits = 70-130%) <br />' Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL Please Note <br /> '.AP #1624 'Matrix interference <br /> Linda C Schneider <br /> Project Manager <br /> 4120210 FUG <2> <br />