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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-96M FAX(925)988-9673 <br /> Analytical 819 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 /> __".,i»� � «»«.-»f^x t if» - »t tSi•��- --� ....»«« ».«..t it � � � �_ �- i .. ..»«» _ <br /> Gettler RyanjGeostrategies Client Pro! ID µTosco SS#6981,«180138 85 Sampled 05/27/98 <br /> 6747 Sierra ourt Suite JSample Descrlpt MW-1 <br /> Received 05/28/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> J Analysis Method 8015Mod/8020 Analyzed 06/04/98 <br /> Attention Deanna Harding <br /> a i Lab Number 9805H47-02 - Reported 07J24�98 « <br /> - --- - - --- «« <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 32 <br /> Benzene 0 50 35 <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 70 130 120 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1849 <br /> T nicher <br /> Pr ct Manager Page 9 3 <br /> .PQ <br />