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i 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 lD Shell, 4445 Pershing Avenue 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 # 4BA1601 <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 /> Ng/L 4BA1601 4BA1602 4BA1603 4BA1604 4BA1605 4BA1606 <br /> MW 1 MW 2 MW 3 MW 4 Dup E B <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 64 55 N D <br /> Benzene 050 N D N D N D 059 050 N D <br /> Toluene 050 ND ND ND ND ND ND <br /> Ethyl Benzene 050 N D N D N D N D N D N D <br /> Total Xylenes 050 N D N D N D N D N D N D <br /> Chromatogram Pattern C4 C12 C4 C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 10 1 0 10 1 0 <br /> Date Analyzed 2/18/94 2/18/94 2/18/94 2/18/94 2/98/94 2/18/94 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-2 <br /> Surrogate Recovery, % 100 94 106 103 103 100 <br /> PC Limits = 70-130°/x) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasonne standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> +SEOUOJA ANALYTICAL <br /> Suzanne Chin <br /> Project Manager 4BA1601 BLA <1> <br />