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. <br /> , —C -Environmental Laboratory of the Pacific <br /> M Qrsanlr Artrrly[+t�l l.�btlr tory <br /> 930 Mapunapuna 5treer 6wre 100 Honolulu,Hawad 96819 <br /> Telephone (808)831-3090 Fax (608)831-3098 E-mail ELPacifrc0oceanlc-labacom <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/GC092298802004A <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample <br /> Analyte Limit I D I D I D I D I D <br /> pg/L 98090434 98090435 98090436 98090437 98090438 <br /> MW-10 MW-11 MW-12 MW-13 MW-14 <br /> Purgeable <br /> Hydrocarbons 50 N D 24,000 120 N D N D <br /> MTBE 50 ND ND ND ND ND <br /> Benzene 050 N D 6,900 069 N D N D <br /> Toluene 050 N D 430 1 5 N D N D <br /> Ethyl Benzene 050 N D 360 N D N D N D <br /> Total Xylenes 1 0 N D 2,500 1 4 N D N D <br /> Chromatogram Pattern -- Gasoline Unidentified -- -- <br /> Hydrocarbons <br /> Quality Control Data <br /> Report Limit Multiplication Factor 1 0 100 a 10 1 0 1 0 <br /> Date Prepared 9121198 9122198 9122198 9/21198 9/21/98 <br /> Date Analyzed 9121/98 9122198 9/22/98 9/21/98 9121198 <br /> Instrument Identification GC-4 GC-4 GC-4 GC-4 GC-4 <br /> Surrogate Recovery, % 84 97 95 85 85 <br /> Triflu-rotoluene fl .mi*c 7r1-11(11 <br /> �ww,.-u v.. 1�nruw r v r.rvf .... ...... ,,.. <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 C <br /> 4Ai an Scott <br /> Pro <br /> ject Manager <br /> 9809127seq �2> <br />