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(D680 Chesapeake Drrve Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek.CA 94598 (925)968-9600 FAX(925)988-9673 <br /> (11,7 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 /> Gettier Ryan/Geostrategies Client Erol ID _ Tosco SS#698 ,µ18a138 85 Sampled Q5/27/98 -' <br /> 6747 Sierra Court Suite J Sample Descript MW-9 Received 05/28/98 _ <br /> 1 Dublin, CA 94568 Matrix LIQUID _ <br /> -; Analysis Method 8015Mod/8020 Analyzed 06/04/98 <br /> ' Attention Deanna Harding _ _ Lab Number 9805H47-09 _ _ 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 N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 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 /> Trlfluorotoluene 70 130 110 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detention <br /> SEQUOIA ANALYTICAL - ELAP #1849 <br /> � <br /> Granicher <br /> ct Manager page 17 <br />