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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wlget[ane 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)791-0342 <br /> rs»..41�» r» » <br /> IR Gettler Ryan%Geostrategles Client Prol� ID Unocal SSsusus# 57, i80179 85_.�,n <br /> Sampled--11/23/98 , <br /> 16747 Sierra Court Suite J Sample Descnpt MW-2 Received 11/23/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 12/02/98 =� <br /> Attention Deanna Harding _ _Lab-Number 9811A00-03-» " Reported 12�j98 <br /> QC Batch Number» 29 <br /> GC1208802005A - <br /> Instrument ID HP5 <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 100 340 <br /> Methyl t-Butyl Ether 50 N D <br /> Benzene 1 0 N D <br /> Toluene 1 0 N D <br /> Ethyl Benzene 1 0 N D <br /> Xylenes (Total) 1 0 N D <br /> Chromatogram Pattern <br /> Weathered Gas .. C8-C12 <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 84 <br /> Vnaiytes reported as N D were not present above the stated lEmd of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> f <br /> Oo <br /> r <br /> Page 5 <br />