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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> (916) 921-9600 • FAX (916) 921-0100 <br /> Aegis Environmental Consultants Client Project ID Shell, 141 N EI Dorado, Stockton Sampled Nov * 1993 <br /> 1050 Melody Lane, Ste 160 Sample Matrix Air Received Nov 5, 1993 <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/8020 Reported Nov 11, 1993 <br /> Attention Paul Graff First Sample# 311-0276 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit I D. <br /> 311-0276 <br /> ppmv INF @ 510 PM <br /> Purgea5le <br /> Hydrocarbons 14 280 <br /> Benzene 0 016 N D <br /> Toluene 0 013 1 6 <br /> Ethyl Benzene 0 012 35 <br /> Total Xylenes 0 012 18 <br /> Chromatogram Pattern Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 <br /> Date Analyzed 11/5/93 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % N D <br /> (OC Limits = 70-130%) <br /> Purgeable 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 /> r � <br /> q! Linda C Schneider <br /> Project Manager 3110276 AEG <2> <br />