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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 ID Arco 2133-93-5, Stockton Sampled Oct 12, 1993 <br /> P 0 Box 13449 Sample Matrix Soil Received Oct 19, 1993 <br /> Sacramento, CA 95813-3449 Analysis Method EPA 5030/8015/8020 Reported Nov 8, 1993 <br /> Attention Steve Misner First Sample # 310-0720 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample <br /> Analyte Limit I D I D <br /> mg/kg 310-0720 310-0721 <br /> S-1910 5-11' S-19155-16 <br /> Purgeable <br /> Hydrocarbons 1 0 44 20 <br /> Benzene 0 005 0 020 012 <br /> Toluene 0 005 N D 0 026 <br /> Ethyl Benzene 0 005 00078 022 <br /> Total Xylenes 0 005 0 012 052 <br /> Chromatogram Pattern Gasoline Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 10 <br /> Date Analyzed 10/22/93 10/22/93 <br /> Instrument Identification HP-1 HP-1 <br /> Surrogate Recovery, % 92 91 <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 staled reporting limit <br /> SEQUOIA ANALYTICAL <br /> ���� ez <br /> Linda C Schneider <br /> Project Manager 3100713 SRS <3> <br />