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e <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9x33 <br /> 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> ,!DAnalytiea 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Iwo 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies - _ - Client ProlID Tosco SS#6981, 180138 85 -- ---Sampled 05/27/98„ <br /> 6747 Sierra Court Suite J Sample Descript MW-11 Received 05/28/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/04/98 _ <br /> - Attention Deanna Harding -Lab Number 9805H47-10 _ _ Reported 07124198 <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 50 230 <br /> Methyl t-Butyl Ether 25 85 <br /> Benzene 0 50 13 <br /> Toluene 0 50 - 17 <br /> Ethyl Benzene 0 50 4 4 <br /> Xylenes (Total) 0.50 16 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trlfluorotoluene 70 130 110 <br /> 0 <br /> Analytes reported as N D were not present above the stated lima of detection <br /> SEQUOIA ANALYTICAL - ELAP #1849 <br /> Wcranicher <br /> t Manager Page 19 <br />