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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 - Sacramento, CA 95834 <br /> 1916) 921-9600 • FAX (916) 921-0100 <br /> 5ro'West, Inc Client Project ID Shell 141 N EI Dorado,Stockton,CA Sampled May 3, 1994 <br /> 0 Melody Lane, Ste 160 Sample Matrix Air Received May 5, 1994 <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/8020 Reported May 9, 1994 <br /> Attention Paul Graff First Sample# 405-0231 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit ID <br /> mgt 405-0231 <br /> cubic m INF @ 11 55 <br /> Purgeable <br /> Hydrocarbons 50 240 <br /> Benzene 0 050 059 <br /> Toluene 0 050 25 <br /> Ethyl Benzene 0 050 45 <br /> ,Total Xylenes 0 050 28 <br /> Chromatogram Pattern C6-C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 20 <br /> Date Analyzed 5/5/94 <br /> instrument identification HP-2 <br /> Surrogate Recovery, % 88 <br /> (CSC Limits = 70-130°/x) <br /> Purgeable Hydrocarbons are quantitated against afresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> SEQUOIA ANALYTICAL <br /> �xj <br /> 7 <br /> i Linda C Schnelde <br /> Project Manager <br /> 4050231 FUG <1> <br />