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` Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364-9133 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> ,!D— Analytical 819 Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> � <br /> gro West, Inc Client Project 10 Shell, 141 N El Dorado, Stockton,CA Samp)ed "� ~Oct 4, 1894 <br /> 50 Melody Lane, Ste 160 Sample Matra Air Received Oct 5, 1994 <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/8020 Reported Oct 11, 1994 <br /> Attention Sudhakar Talanki First Sample # 410-0155 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with STEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limrt 1 D. I D I D. <br /> mg/m3 410-0155 410-0156 410-0157 <br /> IMF Cay C-1 EFF C-2 EFF <br /> 1540 HRS 1530 HRS 1520 HRS <br /> Purgeable <br /> Hydrocarbons 50 120 57 N D <br /> Benzene 0 050 N D N D N D <br /> Toluene 0 050 0 054 014 N D <br /> Ethyl Benzene 0 050 055 091 N D <br /> .Total Xylenes 0 050 40 83 N D <br /> Chromatogram Pattern C6-C12 06-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 <br /> Date Analyzed 10/5/94 10/5/94 10/5/94 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 <br /> Swrogate Recovery, % 92 90 82 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected at or above the reporting limit <br /> SEQUOIA ANALYTICAL, ELAP #1624 <br /> Linda C Schneider <br /> Project Manager <br /> 4100155 FUG <1> <br />