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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> s19 siker Avenue Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> �I,� Analytical <br /> 1455 McDowell Blvd: North.Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> Gettler RyanLGeostrategies Client Proj ID YFormer Unocal SS#0187 - Samples! 11/10/98 <br /> 6747 Sierra Court Suite J Sample Descript U-2 Received 11/10/98 € <br /> t Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 11/16/98 <br /> Attention Deanna Harding _ _ _ Lab Number 9811635-03 _ _ _ Reporter!_11 12 QN, <br /> Purgeable Total Petroleum Hydrocarbons as Gasoline/BTEX/MTBE <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas .... .. 50 .. .. .. 50 <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 /> Unidentified HC .. . . .. .... .. .. C6-C12 <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 98 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> T nicher <br /> Project Manager Page 3 <br />