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t <br /> Sequoia 680 Chesapeake Dnve Redwood Cty,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,Scute 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921-0100 <br /> Gettler Ryan/Geostrategies Client Prot IDµ Unocal-SS#5886 '- Sam led 0-3/25/98 <br /> 6747 Sierra Court Suite J Sample Descript MW-2 Received 03/25/98 <br /> Dublin, CA 94568 Matrix LIQUID - <br /> Analysis Method 8015Mod/8020 Analyzed 04/04/98 <br /> Attention Deanna Harding « Lab Number 9803G82-03 _ « Reported 04J08J98 <br /> QC Batch Number-GC040498802009A - <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 250 N D <br /> Methyl t-Butyl Ether 12 1700 <br /> Benzene 2 5 N D <br /> Toluene 2 5 3 1 <br /> } <br /> Ethyl Benzene 2 5 N D <br /> Xylenes (Total) <br /> 2 5 2 9 <br /> Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 103 <br /> • <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1271 <br /> I ry <br /> Prot anagen <br /> Page 7 <br />