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Z4 SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 * Sacramento, CA 95834 <br /> NOW (916) 921-9600 • FAX (916) 921-0100 <br /> Aegis Environmental Consultants Client Project ID Shell, 141 N El Dorado, Stockton Sampled Jun 28, 1993 <br /> 1050 Melody Lane, Ste 160 Sample Matrix Air Received Jun 29, 1993 <br /> Roseville, CA 95678 Analysts Method EPA 5030/8015/8020 Reported Jul 1, 1993 <br /> Attention Paul Graff First Sample# 306-1231 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit l D <br /> PPMV 306-1231 <br /> INF 11 55 AM <br /> Purgeable <br /> Hydrocarbons 14 220 <br /> Benzene 0 016 N D <br /> Toluene 1 <br /> 00 3 fig <br /> Ethyl Benzene 0 012 46 <br /> • Total Xylenes 0 012 24 <br /> Chromatogram Pattern Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 <br /> Date Analyzed 6/30/93 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % 128 <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 /> I I �-2 I ivl i ') <br /> Wendy Amundsen <br /> Laboratory Director 3061231 AEG <2> <br />