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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N W1get Lane walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite B <br /> Sacramento CA 95834 {916}921-9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 re FAX(707)792-0342 <br /> i <br /> Gettler Ryan Geostrategles +-- Client Prol ID UNOCAL 0123, 280047-85 -µ� Received 062298 Sampled 06/2 /98 <br /> 6747 Sierra�ourt Suite J Sample Descript U-4 016/22/9u <br /> Dublin, CA 94568 Matrix LIQUID = <br /> Analysis Method 8015Mod/8020 Analyzed 07/02/98 <br /> Attention Deanna Harding _ Lab Number 9806E6_5-0_5 _ Reported 07/17/98 <br />�C Batch Number GC070298862004A <br /> nstrument ID HP-4 <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 .. 170 <br /> Methyl t-Butyl Ether .... 25 ...... 45 <br /> Benzene 0.50 .. .... 47 <br /> Toluene -- - -- -. 050 - ---• --- . -- 11 <br /> Ethyl Benzene .. .. 0 50 .... ... 16 <br /> Xylenes (Total) .. 0 50 42 <br /> Chromatogram Pattern- .. .. .. .. ... .. GAS <br /> Surrogates Control Limits% % Recovery <br /> Trlfluorotoluene 70 130 109 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> Tod Granicher <br /> Project Manager Page 17 <br />