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I <br /> SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento CA 95834 <br /> I (916) 921-9600 • FAX (916) 921-0100 <br /> R>=5Ni4iricl��:�t"�� .' <br /> ustries Client Project ID #30003-8, Arco, Stockton Sampled v xxOct 12,ry 1992V <br /> 3164 Gold Camp Dr, Suite 200 Sample Matroc Air Received Oct 13, 1992 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015/8020 Reported Oct 16, 1992 <br /> Attention Matthew Taylor First Sample# 210-0314 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEC DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D. ID ID I.D. I D. I D. <br /> I mg/m3 210-0314 210-0315 210-0316 210-0317 210-0318 210-0319 <br /> A1-1012-MS-1 A1-1012-ASI At-1012-MS2 At-1012-M83 A2-1012-ASI A2-1012-MS2 <br /> Purgeable <br /> Hydrocarbons 50 4000 3400 33000 74000 6600 1800 <br />► Benzene 0 050 60 33 1200 1400 120 150 <br /> Toluene 0 050 47 38 1200 1100 89 130 <br /> Ethyl Benzene 0 050 50 56 150 36 5 6 17 <br /> Total Xylenes 0 050 16 19 670 500 49 95 <br /> Chromatogram Pattern Gas Gas Gas Gas Gas Gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 50 50 1 0 250 1 0 100 <br /> Date Analyzed 10/13/92 10/13/92 10/13/92 10/13/92 10/13/92 10/14/92 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % <br />` (QC Limits = 70-130%) <br /> Purgeabie 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 <br /> Michael R Giles <br /> F Laboratory Dlrector <br /> 2100314 RES <1> <br />