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Lane <br /> 4 <br /> Sequoia Walnut Creek CAe94598 <br /> 4 (975) 988-9600 <br /> qwr Analytical FAX (925) 988-9673 <br /> Oettler-Ryan - Dublin Client Project ID Tosco #6981, Stockton Sampled Aug 24, 1999 <br /> 3164 Gold Camp Drive, #240 Sample Matrix Air Received Aug 24, 1999 <br /> Rancho Cordova, CA 95670 Analysis Method EPA 5030/8015 Mod /8020 Reported Sep 8, 1999 <br /> Attention Mike Mitchener First Sample # W908467 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX/MTBE <br /> Reporting Sample Sample <br /> Analyte Limit I D I D <br /> erg/L W908467-01 908467-02 <br /> I of Eff <br /> Purgeable <br /> Hydrocarbons 10 56 53 <br /> Benzene 0 050 1 1 N D <br /> Toluene 0 050 N D N D <br /> Ethyl Benzene 0 050 N D N D <br /> iTotal Xylenes 0 050 N D N D <br /> MTBE 025 350 - <br /> Chromatogram Pattern Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 50 1 0 <br /> Date Analyzed 8/25/99 8/25/99 <br /> I <br /> Instrument Identification HP-2 HP-2 <br /> Surrogate Recovery, % 97 95 <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, #1271 <br /> Anne Fegley <br /> Project Manager <br /> W908467 GET <i> <br />