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� SEQUOIA ANALYTICAL <br /> 819 Striker Avenue Suite 8 • Sacramento CA 95834 <br /> (916) 921 9600 • FAX (916) 921-0100 <br /> Brown & Caldwell Client Project I Arco 2133-94-5 Stockton Sampled Feb 23 1994 <br /> P 0 Box 13449 Sample Matrix Water Received Feb 24 1994 <br /> Sacramento CA 95813-3449 Analysis Method EPA 5030/8015/602 Reported Mar 10 1994 <br /> Attention Mindy Wright First Sample # 402-1242 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Anaiyte Limit I D <br /> pg/L 402-1242 <br /> Tank <br /> Hurgeable <br /> Hydrocarbons 50 880 <br /> Benzene 050 40 <br /> Toluene 050 11 <br /> Ethyl Benzene 050 12 <br /> Total Xylenes 050 86 <br /> Chromatogram Pattern Gasoline <br /> C&C 12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 3/9/94 <br /> Instrument Identification HP-1 <br /> Surrogate Recovery, % 98 <br /> (DC 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 /> Craig C l= e <br /> Project Manager <br /> 4021242 gas <1> <br />