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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 /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> i <br /> 35 Gettler Ryan jGeostrategles Client Prod ID -Unocal SS#- 5417, 180179 85 Sampled 11/23%98- <br /> 6747 Sierra ourt Sude J Sample Descnpt MW-1 Received 11/23/98 - <br /> Dublin, CA 94568 Matrix LIQUIDIt <br /> = <br /> Analysis Method 8015Mod/8020 Analyzed 12/02/98 <br />`Attention Deanna Harding _ _ Lab Number 9811A00-02-- _ _ - Reported 12J17f98_15C Batch Number GC120298802005A <br /> Instrument 1D 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) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 95 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> zo� -- <br /> r <br /> ra "her <br /> ect Manager Page 3 <br />