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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, 4445 Pershing, Stockton Sampled Aug 26, 1993 <br /> 985 Timothy Drive Sample Matrix Water Received Aug 27 1993 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015/8020 Reported Sep 7, 1993 <br /> Attention Jim Keller First Sample # 3HE1001 <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 /> ug/L 3HE1001 3HE1002 3HE1003 3HE1004 3HE1005 3HE1006 <br /> MW-1 MW-2 MW-3 MW-4 TB DUP <br /> Purgeable <br /> Hydrocarbons 50 84 51 72 130 N D 74 <br /> Benzene 050 48 34 33 47 N D 32 <br /> Toluene 050 0 89 069 0 95 0 86 N D 0 76 <br /> Ethyl Benzene 050 32 29 2 9 35 N D 2 9 <br /> Total Xylenes 050 66 61 63 6 6 N D 62 <br /> Chromatogram Pattern Gas Gas Gas Gas Gas <br /> I <br /> Quality Control Data j <br /> Report Limit Multiplication Factor 1 0 10 1 0 1 0 1 0 1 0 <br /> Date Analyzed 9/11/93 9/1/93 9/1/93 9/11/93 9/1/93 9/1/93 <br /> Instrument Identification GCHP-4 GCHP-4 GCHP-4 GCHP-4 GCHP-4 GCHP4 <br /> Surrogate Recovery, % 92 93 94 94 96 93 <br /> (CC Limits = 70-130%) <br /> Purgeable Hydrocarbons are auantitated against a fresh gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> EQUOrtsA ANALYTICAL-) <br /> -Peggy A 1P6nnerl`--/ <br /> Project Manager/ 3HE1001 BE_A <1> <br />