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Sequoia 680 Chesapeake Dnvt Redwood Cary CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 404 '� Wiget Lane Walnut CretK Ca 94599 (510) 983 9600 FAX(5 10)988 9673 <br /> Analytical 3 t 9 StnkcrAvcnLC Suitt 9 Sacramento CA 95334 (916) 921 9606 FAA (916)921 Otoo <br /> 1 <br /> EA Engineering Science &Tech Client Proj ID Exxon 7-3942/8373942 1307 Sampled 10/19/95 <br /> 3468 Mt Diablo Blvd Ste 8100 Sample Descript MWS Received 10/20/95 <br /> Lafayette CA 94549 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/24/95 <br /> Attention Tracy Faulkner Lab Number 951OF27-14 Reported 10127195 <br /> QC Batch Number GC1024956TEX21A <br /> Instrument ID GCHP21 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 50 85 <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 1 1 <br /> Xylenes (Total) 050 1 1 <br /> Chromatogram Pattern Gas <br /> Unidentified HC <C8 <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 87 <br /> 1 <br /> Analytes reported as N D were not present above the stated lima of detection <br />' SEQUOI N I AL - ELAP #1210 <br /> eg enner <br /> Project Manager Page 14 <br /> i <br /> 1 <br />