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Sequoia680 Chesapeake Onve Redwood City,CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988 9673 <br /> Analytical 819 Sinker Avenue,Suite 8 Sacramento, CA 95834 (916) 921-96W FAX(916)921-0100 <br /> Gettler Ryan/Geostrategles Client Prol�ID Unocal SS#5886 Sampled 03/25/98 <br /> :In 6747 Sierra Court Suite J Sample Descript MW-5S 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 _9803G82-08 _ Reported 04J08J98 <br /> QC Batch-Number Gt040398802009A <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 /> SQ N D <br /> Methyl t-Butyl Ether 25 N D <br /> Benzene 050 N D <br /> Toluene 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) <br /> Q 50 <br /> ND <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 102 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> gory <br /> Pro ct Manager <br /> Page 22 <br />