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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive - Redwood City, CA 94063 <br /> 10 (415) 364-9600 • FAX(415) 364-9233 <br /> vrF f <br /> Blaine Tech Services, Inc Client Project ID Shell, 620 West Charter Way h Sampled Feb 15, 1994 <br /> 985 Timothy Drive Sample Matrrc 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# 4BA1307 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D. I D. I D I D I.D I D <br /> Mg/L 4BA1307 4BA1308 4BA1309 4BA1310 4BA1311 4BA1312 <br /> MW 7 MW 8 MW 9 MW 10 Dup E B <br /> Purgeable <br /> Hydrocarbons 50 49,000 4,500 51,000 N D 53,000 N D <br /> Benzene 050 710 N D 1,300 N D 1,400 N D <br /> Toluene 050 400 26 2,700 N D 3,000 N D <br /> Ethyl Benzene 050 850 N D 1,600 N D 1,600 N D <br /> Total Xylenes 050 1,500 1,000 9,300 N D 9,400 N D <br /> Chromatogram Pattern c4-012, C4-C12 C4-C12 C4-C12 <br /> >C8 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 100 20 200 1 0 500 10 <br /> Date Analyzed 2/18/94 2/17/94 2/17/94 2/19/94 2/17/94 2/17/94 <br /> Instrument Identification GCHP-17 GCHP-2 GCHP-2 GCHP-17 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 116 99 98 87 98 87 <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 report rig limit <br /> SEQUOIA ANALYTICAL <br /> Suzanne Chi <br /> Project Manager 4BA1301 BLA <2> <br />