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680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988 9673 <br /> a- -N819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100'" <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services - Client Prod ID Shell 620 W Charter Way Sampled 08/11/98 ; <br /> - 1680 Rogers Avenue Sample Descript MW-10 Received 08/14/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/27/98 <br /> .' Attention Fran Thie _ Lab Number 9808909-10 Reported 09125198 <br />=QC Batch Number GC082798BTEX05A <br /> Instrument ID GCHP5 <br /> Total Purgeable 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 0 50 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 75 <br /> J <br /> H <br /> Analytes reported as N D were not esent above the stated limit of detection <br /> SEQUOI N LYTICAL - ELAP #1271 <br /> Peggy Pener <br /> Project Ma r Page 10 <br />