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i <br /> Sequoia 404 N .CA Lane <br /> Walnut Geek,t= 94598 <br /> (925)988-9600 <br /> 5�� Analytical FAX(925)488'9673 <br /> Wer-Ryan -Dublin'- nn , Client Project 10 Unocal 45886, Stockton Sampled Aug 16-17, 1999 <br /> 6747 Sierra Court, Suite J Sample Matrix Water Received Aug 18, 1999 <br /> Dublln, CA 94568 Analysis Method EPA 5030/8015 Mod/8020 Reported Sep 14, 1999 <br /> Attention Deanna Harding First Sample # W908373 <br /> CIC Batch Number <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Lund LD LD I.D. I.D. l.D I.D <br /> pg/L W908373--07 908373-08 908373-09 908373-10 908373-11 908373-12 <br /> MW-5D MW-5S MW-6D MW-6S MW-7D MW-7S <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D N D N D N D <br /> Benzene 050 N D N D N D N D N D N D <br /> Toluene 050 N D N D N D N D N D N D <br /> Ethyl Benzene 050 N D N D N D N D N D N D <br /> Dotal Xylenes 050 N D N D N D N D N D N D <br /> MTBE 25 ND 69 93 30 ND ND <br /> Chromatogram Pattern - -- - - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 1 0 1 0 10 10 t 0 <br /> Date Analyzed 8/27/99 8/27/99 8/27/99 8/27/99 8/27/99 8/27/99 <br /> Instrument Identification HP-2 HP-2 HP-2 HP-2 HP-2 HP-5 <br /> Surrogate Recovery, % 91 98 93 95 98 88 <br /> (OC 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, #1271 <br /> Wwt, � L <br /> *Jtn4ne Fegley <br /> Project Manager <br /> W908373 GET <2> <br />