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Sequoia 680 Chesapeake Drive RcdwoOd Gty,CA 94063 (650) 364-%W FAX(650)364 9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 96W FAX(5 10)988 9673 <br /> 11WO Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921-96W FAX(916)911 0100 <br /> Gettler Ryan%Geostrategies --�� Client Prol 1D Unocal SS#5886 T ' '--"- -Sampled 03/25/98 3 <br /> 6747 Sierra Court Suite J Sample Descnpt MW-413 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 _ _ _ Reponed_04/08198 <br /> oC Batch Number GC040398862609A ------- - - — --- ------ - ___ <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 21 <br /> Benzene 0 50 091 <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 70 130 101 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA A ALYTICAL - ELAP #1271 <br /> 1 egory <br /> :2rolect Manager Page 13 <br />