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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive • Redwood City, CA 94063 <br />. (415) 364-9600 • FAX(415) 364-9233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 620 West Charter Way Sampled Feb 15, 1994 <br /> 985 Timothy Drive Sample Matrix Water Received Feb 16, 1994 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015 Mod /8020 Reported Feb 24, 1994 <br /> Attention Jim Keller First Sample # 4BA1313 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample <br /> Analyte Limit 10 <br /> pg/L 4BA1313 <br /> TB <br /> Purgeable <br /> Hydrocarbons 50 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Total Xylenes 050 N D <br /> Chromatogram Pattern <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 <br /> Date Analyzed 2/17/94 <br /> Instrument Identification GCHP-2 <br /> Surrogate Recovery, % 98 <br /> (OC;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 /> Suzanne Chin <br /> Project Manager 4BA1301 BLA <3> <br />