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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 N Pershing Ave Stock-to Sampled Jan 11 1993 <br /> 985 Timothy Drive Sample Matrix Water Received Jan 12 1993 <br /> San Jose CA 95133 Analysis Method FPA 5030/8015/8020 Reported Jan 15 1993 <br /> Attention Glen Bennett First Sample # 301-1267 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with STEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID ID ID <br /> Ng/L 301-1267 301-1268 301-1269 301-1270 301-1271 <br /> MW-1 MW-2 MW-4 MW-5 Trip Blank <br /> Purgeable <br /> Hydrocarbons 50 N D N D 230 N D N D <br /> Benzene 050 N D N D 57 N D N D <br /> Toluene 050 N D N D 12 N D N D <br /> Ethyl Benzene 050 N D N D 1 3 N D N D <br /> Total Xylenes 050 N D N D 8 7 N D N D <br /> Chromatogram Pattern - - Gas <br /> Quality Control Data <br /> Report Limit <br /> Multiplication Factor 1 0 1 0 1 0 1 0 1 0 <br /> Date Analyzed 1/13/93 1/13/93 1/13/93 1/13/93 1/13/93 <br /> Instrument Identification GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-3 <br /> Surrogate Recovery, % 84 86 83 83 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 /> 0 SEQUOIA ANALYTICAL <br /> 16Mi <br /> Gr <br /> �ria Lee <br /> roject Manager 3011267 SLA ;1- <br />