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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 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> *roWest, Inc Client Project ID shell, 141 N EI Dorado,Stockton,Ca Sampled Jun 1, 1994 <br /> 510 Melody Lane, Ste 160 Sample Matrix Air Received Jun 2, 1994` <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/8020 Reported Jun 7, 1994 <br /> Attention Paul Graff First Sample # 406-0084 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Ltmrt I D I D l D <br /> ppmv 406-0084 406-0085 406-0086 <br /> INF C-1 EFF G2 EFF <br /> Flurgeable <br /> Hydrocarbons 1 4 51 63 24 <br /> Benzene 0 016 0 41 0 044 0 041 <br /> Toluene 0 013 067 014 014 <br /> Ethyl Benzene 0 012 0 53 042 0 025 <br /> lootal Xylenes 0 012 3 7 095 021 <br /> Chromatogram Pattern C6-C12 C6-C12 C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 5 0 1 0 10 <br /> Date Analyzed 6/3/94 6/3/94 6/2/94 <br /> Instrument Identification HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % 103 103 97 <br /> (QC Limits = 70-130%) <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.., ELAP #1624 <br /> Linda C Schneider <br /> Project Manager <br /> 4060084 FUG <2> <br />