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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)968-9673 <br /> frIII� Analytical 819 Sinker 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)792-034Z <br /> • <br /> ' Gettler Ryan/Geostrategies Client ProI�ID Unocal 5886,-180137 85 -� - Samples! 06/17/98 <br /> 16747 Sierra Court Suite J Sample Descrlpt TB-LB 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 9806C26-01 _ _ Reported 07109/98 <br /> QC Batch Number GCO62798802002A <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 25 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 112 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - E=LAP #1271 <br /> _-71,1 ._ <br /> *Granicher <br /> ct Manager Page 1 <br />