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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 # 4BA1301 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID ID <br /> Ng/L 4BA1301 4BA1302 4BA1303 4BA1304 4BA1305 4SA1306 <br /> MW 1 MW 2 MW 3 MW 4 MW 5 MWIS <br /> Purgeable <br /> Hydrocarbons 50 N D 59 000 N D 18,000 N D N D <br /> Benzene 050 N D 210 N D 370 N D N D <br /> Toluene 0 50 N D 200 N D 280 N D N D <br />• Ethyl Benzene 050 N D 270 N D 370 N D N D <br /> Total Xylenes 050 N D 6,900 N D 2,300 N D N D <br /> Chromatogram Pattern C4 C12 C4-C12 - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 200 1 0 200 1 0 10 <br /> Date Analyzed 2/17/94 2/17/94 2/17/94 2/17/94 2/18/94 2/17/94 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-3 GCHP-2 <br /> Surrogate Recovery, % 106 97 91 97 96 95 <br /> (OC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> . SEQUOIA ANALYTICAL <br /> C <br /> Suzanne Chin <br /> Project Manager 4BA1301 BlA <1> <br />