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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wlget Lane Walnut Creek.CA 94598 (925)988-%w FAX(925)988-9673 <br /> � Analytical 819 Striker Avenue Suite B Sacramento CA 95834 (916)421-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1. Gettler Ryan[Geostrategies - Client Prol ID UNOCAL 2859, Stockton Sampled 06/18/98 <br /> 15 6747 Sierra Court Suite J Sample Descript MW-5 Received 06/18/98 <br /> 3 Dublin, CA 94568 Matrix LIOUID - <br /> 5 Analysis Method 8015Mod/8020 Analyzed 06/28/98 <br />_Attention Deanna Harding_ _ ___ -Lab Number- 98r76C89-06 -__- _ --_ -- Reported 07j 0198 „" <br /> QC 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 /> Trifluorotoluene 70 130 110 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> T ranicher <br /> Prd7ct Manager Page 14 <br />