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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (650) 364 9600 FAX(650)364-9233 <br /> (X� 404 K Wiget lane Walnut Creek CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Iwo Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> i <br /> Geller Ryan/Geostrategies " Client Prod"ID Unocal"SSS# 5886 Sampled 03/25/98 �= <br /> 6747 Sierra Court Suite J Sample Descript MW-41D Received 03/25/98 " <br /> Dublin, CA 94568 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 04/03/98 <br /> Attention Deanna Harding _ _ Lab Number 9803G82-05 Reported 04J08198 <br /> QC Batch Number GC040398802009A - <br /> Instrument ID GCHP09 <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 <br /> 50 N D <br /> Methyl t-Butyl Ether - 25 21 <br /> Benzene 050 091 <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 /> Trifluorotoluene 70 130 141 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A ALYTICAL - ELAP 01271 <br /> pegory :: <br /> Pro ct Manager Page 13 <br /> m <br />