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SEQUOIA ANALYTICAL <br /> 680 Chesapeake Drive a Redwood City, CA 94063 <br /> 14WO (415) 364-9600 • FAX (415) 364-9233 <br /> Blaine Tech Services, Inc Client Project ID Shell, 141 N EI Dorado, Stockton Sampled Nov 22, 1993 <br /> 985 Timothy Drive Sample Matrix Water Received Nov 23, 1993 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015/8020 Reported Dec 3, 1993 <br /> Attention Jim Keller First Sample # 3KE5507 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limrt 1 D 10 1 D 1 D <br /> ug/L 3KE5507 3KE5508 3KE5509 3KE5510 <br /> MW-5 DUP E B T B <br /> Purgeable <br /> Hydrocarbons 50 N D 1,500 N D N D <br /> Benzene 050 N D 15 N D N D <br /> Toluene 050 N D 19 N D N D <br /> Ethyl Benzene 050 N D 79 N D N D <br /> Total Xylenes 050 091 270 N D N D <br /> Chromatogram Pattern -- Gas - <br /> Quality Control Data <br /> Report Limit Multiplication Factor 10 50 10 10 <br /> Date Analyzed 11/29/93 11/24/93 11/29/93 11/24/93 <br /> Instrument Identification GCHP-17 GCHP-17 GCHP-17 GCHP-17 <br /> Surrogate Recovery, % 101 92 98 99 <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 reporting limit <br /> ECUOIA ANALYTICAL <br /> � Y <br /> PeggyA./Penner 3KE55018LA <2> <br /> Prolect Manager <br />