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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)988-967Y <br /> a- ) <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)911-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> • <br /> - <br /> Blaine Tech Services Client Proj ID _ Shell 141 N EI Dorado Sampled 07N28/98µ <br /> 1680 Rogers Avenue Sample Descript MW-5 Received 07/30/98 = <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 08/06/98 <br /> Attention Fran Thie Lab Number 9807H79-07 Reported 08f 1498 <br /> QC Batch Number GCO80698802004A <br /> Instrument ID HP-5 <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 100 .. 740 <br /> Benzene 0 50 N D <br /> Toluene 0 50 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 75 <br /> 10 <br /> Analytes reported as ere not present above the stated limit of detection <br /> SEQU AL ICAL - ELAP #1271 <br /> Peggy lkdner <br /> Project Manager Page 10 <br />