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Sequoia 600 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> �III� Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)9zt-9600 FAX(916)911-0100 <br /> 1455 McDowell Blvd North 5te D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> • <br /> Gettler Ryan/GeostrategIes-- _-... --Client Prod ID--UNOCAL 2859, Stockton ' - - Sampled 06/18%98-- <br /> 6747 Sierra Court Suite J Sample Descnpt MW-7 Received 06/18/98 - <br /> j Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 06/28/98 <br /> -Attention Deanna Harding_ -_ _ Lab Number 9806C90-08 - _ Reported_ 07f10198 - <br /> oC Batch Number GC062898802002A <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 050 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 109 <br /> Analytes reported as N D were not present above the stated Wit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> T0ranicher <br /> Pt Manager Page 6 <br /> r <br />