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Sequoia 680 Chesapeake Drive Redwood Gty CA 94063 (650) 364-9600 FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988-96W FAX(5110) 988%73 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921 0100 <br /> S <br /> Gettler Ryan/Geostrategles - -- ---Client Prot 1D -Unocal SS#5886 Sampled 03/25/98 <br /> 6747 Sierra Court Suite J Sample Descnpt TB-LB 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 9803G82-01 Reported 041O8198 <br /> QC ffatch Number 6C040398802009A — --- - - - - - -- -- - - ----- - <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 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) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 102 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> gory <br /> Project Manager Pae t <br /> 9 <br />