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Sequoia 680 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 /> � Analytical <br /> 819 Striker Avenue Sonne 8 Sacramento,CA 95834 (916j 921-9600 FAX 1916;921-0100 <br /> U <br /> 5455 McDowell Blvd North,Ste D Petaluma. 94954 707 792-1865 FAX 707 792-0342 <br /> 0 <br /> Gettler Ryan/Geostrategles _ - Client Proj ID^ Unocal Former Facility#0187 Sampled 08/17/98 <br /> i 6747 Sierra Court Suite J Sample Descnpt U-6 Received 08/17/98 <br /> Dublin, CA 94568 Matra LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/28/98 <br /> ', Attention Deanna Harding Lab Number 9808A40-07 Y _— Reported_09j20198 <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 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 84 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> 1 " <br /> mew <br /> Tod Granlcher <br /> Project Manager Page 7 <br />