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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9133 <br /> 404 N Wlget Lane Walnut Creel.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> AkAO Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-D100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Gettler Ryan1Geostrategies "-~-µClient Prol-ID —UNOCAL 0123, 280047 85 Sampled 06/22/98 <br /> 6747 Sierra 6ourt Suite J Sample Descnpt U-2 Recenred 06/22/98 <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 07/02/98 <br /> Attention Deanna Harding Lab Number 9806E65-03 _ _ Reported 07/17/98—_= <br />)C Batch Number GC070298802004A <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 N D <br /> Methyl t-Butyl Ether . . . 25 . ..... ... 13 <br /> Benzene 0 50 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control limits % % Recovery <br /> Trifluorotoluene 70 130 113 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 01271 <br /> Tc '11 <br /> Tod Granicher <br /> Project Manager Page 9 <br />