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Sequoia 680 Chesapeake Drive Redwood City C4 94063 (415) 364 9600 FAX(415) 364 9233 <br /> Analytical 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ro West, Inc Client Project ID shell,141 N EI Dorado,Stockton CA Sampled Aug 23, 1094 <br /> 0 Melody Lane, Ste 160 Sample Matrix Air Received Aug 24, 1994 <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/8020 Reported Sep 1, 1994 <br /> Attention Sudhakar Talanki First Sample# 408-0970 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample <br /> Analyte Limit I D I D I D <br /> mg/m3 408-0970 408-0971 408-0972 <br /> INF C-1 EFF C-2 EFF <br /> 91530 @ 1520 @ 1510 <br /> Purgeable <br /> Hydrocarbons so -,60 47 N 0 <br /> Benzene 0 050 N D N D N D <br /> Toluene 0 050 0 10 021 N D <br /> Ethyl Benzene 0 050 064 1 1 N D <br /> Wotal Xylenes 0 050 62 77 N D <br /> Chromatogram Pattern CS-C12 CS-C12 - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 1 0 <br /> Date Analyzed 8/25/94 8/25/94 8/25/94 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 92 93 86 <br /> (QC Limits = 70-130%) <br /> °urgeable 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, FLAP #1624 <br /> Linda C Schneider <br /> Protect Manager <br /> 4080970 FUG <1> <br />