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SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 8 • Sacramento CA 95834 <br /> (916) 921 9600 • FAX (916) 921 0100 <br /> EMCON Associates Oient Project ID Shell, 6131 Pacsf'ic Ave , Stockton Sampled Oct 15, 1992 <br /> 1433 N Market Blvd Sample Matrix Water Received Oct 15, 1992 <br /> Sacramento, CA 95834 Analysis Method EPA 5030/8015/8020 Reported Oct 28, 1992 <br /> Attention Jim Ptttilla First Sample # 210-0415 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Umd I.D I D. I.D I.D. <br /> yg/L 210-0415 210-0416 210-0417 210-0418 <br /> MW-1 MW-2 Field Blank TV Blank <br /> Purgeable <br /> Hydrocarbons 50 76 2500 N D N D <br /> Benzene 0 50 56 94 N D N D <br /> Toluene 0 50 0 68 30 N D N D <br /> Ethyl Benzene 0 50 N D 42 N D N D <br /> Total Xylenes 050 N D 9 4 N D N D <br /> Chromatogram Pattem Gas Gas .. <br /> Ouality Control Data <br /> Report tlmlt Multiplication Factor 10 10 10 10 <br /> Date Analyzed 10/23/92 10/23/92 10/23/92 10/23/92 <br /> Instrument Identlficatlon HP-2 HP-2 HP-2 HP-2 <br /> Surrogate Recovery, % - - - - <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting lima <br /> SEQUOIA ANAL AL <br /> Michael R Gres <br /> Laboratory Director <br /> 2100415 EMC <t <br />