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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Ki) 404 N Wiget Lane Walnut Creek CA 94598 (915)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite B Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> qwr Analytical 1455 McDowell Blvd Narth Ste D Petaluma,CA 94954 (707)791-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies--- - - Client Proj ID Unocal SS#0123 _ - -- -- Sampled 09/28/98 = <br /> 6747 Sierra Court Suite J Sample Descript U-2 Received 09/28/98 <br /> Dublin, CA 94568 Matrix LIQUID _ <br /> Analysis Method 8015Mod/8020 Analyzed 10/06/98 <br /> Attention Deanna Harding Lab Number 9809H50-03 _ - Reported_11J10J98 _ <br /> 06batch Number GC100698BTEX2IA <br /> Instrument ID GCHP21 <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 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Tnfluorotoluene 70 130 84 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01210 <br /> Granicher <br /> Project Manager Page 7 <br />