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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> X1111 Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9Z1-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> i <br /> Gettler Ryan[Geostrategies--- Client Prof ID-- Unocal 5886, 180137 85 - - - -- Sampled 06/17/98 <br /> 6747 Sierra Court Suite J Sample Descrlpt MW-3 Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/27/98 <br /> Attention Deanna Harding _ Lab Number 9806C26-04 _ Reported 07j09j98 <br /> QC Batch Number GC062798802002A - <br /> Instrument ID HP-2 <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 1000 N D <br /> Methyl t-Butyl Ether 50 6200 <br /> Benzene 10 N D <br /> Toluene 10 N D <br /> Ethyl Benzene 10 N D <br /> Xylenes <br /> Chromatogram Pattern 10 N D <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 118 <br /> I <br /> I <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> IL t nicher <br /> Ma <br /> t Manager Page 10 <br />