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® SEQUO1ADANALYTICAL • <br /> 819 Striker Avenue, Suite 8 P Sacramento, CA 95834 <br /> Iwo (916) 921-9600 • FAX (916) 921-0100 <br /> Brown &Caldwell Client Project ID Arco #2133, Stockton Sampled Nov 25, 1992 <br /> 723 S St Sample Matrix Water Received Nov 25, 1992 <br /> Sacramento, CA 95814 Analysis Method EPA 5030/8015/602 Reported Dec 3, 1992 <br /> Attention Steve Tan First Sample # 211-0554 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Ltmd l D <br /> pg/L 211-0554 <br /> Tank <br /> Purgeable <br /> Hydrocarbons 50 170 <br /> Benzene 050 0 74 <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 14 <br /> Total Xylenes 050 16 <br /> Chromatogram Pattern Gas <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 11/30/92 <br /> Instrument Identification HP-2 <br /> Surrogate Recovery, % 113 <br /> (QC 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 /> W6 <br /> A_(7 <br /> Michael R Giles <br /> Laboratory Director <br /> 2110554 BRS <1> <br />