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�e <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> IWO 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1665 FAX(707)792-0342 . <br /> Blaine Tech Services Client Prod 1D Shell 141 N EI Dorado Sampled 10/05/98 <br /> 1680 Rogers Avenue Sample Descnpt VEW-4 Received 10/08/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis-Method=8015Mod/8020 Analyzed=10/14/98=1 <br /> Attention Fran Thie Lab Number 9810725-11 Reported 10/21/98 <br /> QC Batch Number GC1 01 498BTEX21 A <br /> Instrument ID GCHP21 <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 73 <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 96 <br /> i <br /> Analytes reported a D were not present above the stated limit of detection <br /> SEQUOI NA ICAL - ELAP #1210 <br /> PeggyllZejer <br /> Project Manager Page 12 <br />