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Environmental Laboratory of the f'acifrc <br /> M Qrsans MrV,-W Lok-w y <br /> s 930 Mapunapurta Street,5uire 100 Honolulu Hawaii 96619 F <br /> Telephone (8043)831-3090 Fac(306)4531-3095 E-mail E1_pacrfic&7ocean1c-1ab9com <br /> . Laboratory Report <br /> Sequoia Analytical Client Project ID Unocal, 9809909 Sampled Sep 15, 1998 <br /> 680 Chesapeake Dr Sample Matrix Water Received Sep 17, 1998 <br /> Redwood City, CA 94063 Analysis Method EPA 5030/8015 Mod 18020 Reported Sep 24, 1998 <br /> Attention Tod Granicher Work Order# 9809127 <br /> QC Batch Number GC092198802004A <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample <br /> Analyte Limit ID ID ID ID <br /> dig/L 98090439 98090440 98090441 98090442 <br /> MW-15 MW-16 MW-17 Delta College <br /> Purgeable <br /> Hydrocarbons 50 N D N D N D 130 <br /> MTBE 50 ND 77 ND ND <br /> Benzene 050 N D N D N D 28 <br /> Toluene 0 50 N D N D N D 25 <br /> r <br /> Ethyl Benzene 050 N D N D N D 44 <br /> Total Xylenes 1 0 N D N D N D 80 <br /> Chromatogram Pattern -- -- -- Gasoline <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 1 0 1 0 1 0 <br /> Date Prepared 9121198 9121/98 9/21198 9/21198 <br /> Date Analyzed 9121/98 9/21/98 9/21198 9/21198 <br /> Instrument Identification GC-4 GC-4 GC-4 GC-4 <br /> Surrogate Recovery, % 81 92 85 92 <br /> Triflii inrntnh rang 11 im,tg 71n-vim <br /> Purgeable Hydrocarbons are quantitated against a gasoline standard <br /> Analytes reported as N D were not detected above the stated reporting limit <br /> E. L P <br /> an J Scott <br /> Project Manager <br /> 9809127 seq<3> <br />