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680 Chesapeake Dr ve Redwood City CA 94063 (650)364-9600 FAX(65o)364-9233 <br /> Sequoia Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 404 N Wiget lane <br /> Analytical Sig Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br />�GettlerRyan Geostrategies - - Client Prof ID UNOCAL 2859, Stockton- -- Sampled 06/18/98 ^N <br /> 6747 Sierra Court Suite J Sample Descnpt MW-8 Received 06/18/98 - <br /> Dublin, CA 94568 Matrix LIQUID - <br /> Analysis Method 8015Mod/8020 Analyzed 06/28/98 <br /> Attention Deanna Harding _ —__-_—Lab Number-9806C90-09 _ _ _ _ Reported 07j10198 - <br />�C Batch Number GC062898802002A-- <br /> nstrument 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 50 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 101 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> TI <br /> anicher <br /> Pro ct Manager page 8 <br />