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j SEQUOIA ANALYTICAL <br /> 819 Striker Avenue, Suite 8 • Sacramento, CA 95834 <br /> k916) 921 9600 • FAX (916) 921-0100 <br /> Aegis Environmental Consultants Client Profect ID Shell, 141 N 81 Dorado, Stockton Sampled Apr 8, 1993 <br /> 1050 Melody Lane, Ste 160 Sample Matrix Water Received Apr 9, 1993 <br /> Roseville, CA 95678 Analysis Method EPA 5030/8015/602 Reported Apr 20, 1993 <br /> Attention Paul Graff First Sample # 304-0355 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit I D <br /> ug/L 304-0355 <br /> Eff <br /> Purgeable <br /> Hvdrocarbons 50 E60 <br /> Benzene 05 17 <br /> Toluene 05 42 <br /> Ethyl Benzene 05 48 <br /> Total Xylenes 05 180 <br /> Chromatogram Pattern Gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 20 <br /> Date Analyzed 4/16/93 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % 101 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Anaiytes reported as N D were not detected above the stated reporting limit <br /> �EQUOIA ANALYTICAL <br /> Michael R Giles <br /> Laboratory Director 3040355 AEG <1> <br />