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• Sequoia 680 Chesapeake Drrve Redwood City CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N W1get lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> Iwo 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792 1865 FAX(707)792-0342 <br /> Gettler Ryan/Geostrategies _ - Client Prol ID Unocal 5886, 180137 85 Sampled 06/17/98 = <br /> 6747 Sierra Court Suite J Sample Descript MW-5D Received 06/17/98 <br /> Dublin, CA 94568 Matrr< LIQUID - <br /> Analysis Method 8015Mod/8020 Analyzed 06/27/98 <br /> Attention Deanna Harding Lab Number 9806C26-07 --Reported 07/09198 <br /> 4C Batch Number GC0627988020d2A- - <br /> nstrument ID HP-2 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Limit Sample Results <br /> u9/L ug/L <br /> *TPPH as Gas 50 N D <br /> Methyl t-Butyl Ether 2 5 N D <br /> Benzene 0 50 N D <br /> Toluene 0 50 0 61 <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 055 <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 107 <br /> • <br /> • <br /> Walytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> r0ranlcher <br /> P it Manager Page 19 <br /> • <br />