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1 Sequoia .i0 Chesapeake Onve Redwood City,CA 94063 650) 364-9600 FAX(650)364-9233 <br /> a_ � 404 N Wiget Lane Walnut Creek,CA 94598 (510) 988 96W FAX(510)988-9673 <br /> Analytical 819 Sinker Avenue,Suite a Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrategies _ -Client Prol ID Unocal SS#0187 " -Sampled 02/13/98 J <br /> 6747 Sierra Court Suite J Sample Descript U-5 Received 02/17/98 <br /> Dublin, CA 94568 Matrix LIQUID - <br /> Analysis Method 8015Mod/8020 Analyzed 02/25/98 - <br /> Attention Deanna Harding Lab Number 9802A45-06 _ _ Reported 03102198 - <br /> QC Batch Number GCO22598802005A <br /> Instrument ID GCHP05 <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 0 50 N D <br /> Ethyl Benzene 0 50 N D <br /> Xylenes (Total) 0 50 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 96 <br /> 0 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANA 7YTICAL - ELAP #1271 <br /> gory <br /> Iiect Manager Page 6 <br /> A7�, <br />