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a SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 6 • Sacramento CA 95834 <br /> NO1 9161 9219600 • SAX (916) 921 0100 <br /> :gown & Caldweii Client Project ID Arco 434-94-5 Loot Sampled Apr 12 1994 <br /> P 0 Box 13449 Sample Matrix Air Received Apr 13 1994 <br /> Sacramento CA 95813-3449 Analvsis Method EPA 5030/8015,8020 Reported Apr 14 1994 <br /> -%ttention Mindv Wright First Sample gr 404-0378 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit 10 1 D <br /> ppmv 404-0378 4040379 <br /> CAT OX CAT OX <br /> Influent Effluent <br /> urgeao e <br /> Hydrocarbons 1 4 280 N D <br /> Benzene 0 016 N D N D <br /> Toluene 0 013 1 9 N D <br /> Ethyl Benzene 0 012 35 N D <br /> • Total Xylenes 0 012 45 N D <br /> Chromatogram Pattern Gasoline <br /> C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 10 <br /> Date Analyzed 4/13/94 4/13/94 <br /> Instrument Ident4ication HP-2 HP-2 <br /> Surrogate Recovery, % 100 98 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL <br /> if1 <br /> Craig C Lt'Re <br /> Project Manager <br /> 4040378 SRS <1> <br />