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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> 404 N Wiger Lane Walnut Greek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite B Sacramento CA 95834 (916)9Z1-9600 FAX(916)921-0100 <br /> Analytical <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategles Client Proj ID UNOCAL 2859, Stockton Sampled 46/18/98 <br /> 6747 Sierra Court Suite J Sample Descnpt TB-LB Received 06/18/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> a Analysis Method 8015Mod/8020 Analyzed 06/28/98 <br /> Attention Deanna Harding _ _ _ _" _ Lab Number 9806C89-01 _ Reported 07/10198 ; <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 0 50 N D <br /> Toluene 050 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 050 <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 107 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01271 <br /> ranlcher <br /> Project Manager Page a <br />