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Sequoia 6110 Chesapeake D,,,,! Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek.CA 94598 (92S)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (9116)921 9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792 1865 FAX(707)792-0341 <br /> Geiler Ryan[Geostrategtes Client Pr6j-IDs Unocal SS-#5886%2701 W ~March W Sampled 09/01/98 _ <br /> 6747 Sierra Court Suite J Sample Descript MW-4S Received 09/02/98 <br /> Dublin, CA 94568 Matrix LIQUID _ <br /> Analysis Method 8015Mod/8020 Analyzed 09/08/98 <br /> Attention Deanna Harding Lab Number 9809049-06 _Reported 10f01198 W <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 2 5 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tri#Iuorotoluene 70 130 $7 <br /> Is <br /> ,analytes reported as N D were not present above the stated limit at detection <br /> SEQUOIA ANALYTICAL - ELAP #1849 <br /> -0 :% " <br /> Tod Granicher <br /> Project Manager <br /> Page 1B <br />