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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> l 404 N Wiget lane Walnut Creek,CA 94598 (925)988-9600 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 /> • <br /> Gettler Ryan[Geostrategles --- Client Proj ID Unocal-5886, 180137 85 _ - - Sampled 06/17/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-4S Received 06/17/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/27/98 , <br /> Attention Deanna Harding _ Lab Number 9806026-06 _ Reported 07JO9198 <br /> QC batch Number GC062798802002A -- - - - - - - - - - _ - -- - <br /> Instrument ID HP-2 <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 12 <br /> Benzene 0 50 N D <br /> Toluene 0.50 079 <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) . <br /> Chromatogram Pattern <br /> 0.50 0 67 <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 108 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> 1 ► . <br /> Tod Granicher <br /> Pot <br /> Manager Page 16 <br />