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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 /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> qlr 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 2575 Country Club Blvd Sampled 10/06/98 <br /> 1680 Rogers Avenue Sample Descript Caltrans Received 10/08/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method _8015Mod/8020 Analyzed 10%14/98-- <br /> Attention Fran Thie Lab Number 9810742-17 Reported 1 OJ27198 <br /> QC Batch Number GC101498BTEX17A <br /> Instrument ID GCHP17 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX and MTBE <br /> Analyte Detection Lima 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 050 N D <br /> Xylenes (Total) 050 N D <br /> Chromatogram Pattern <br /> Surrogates Control Limits % % Recovery <br /> Trifluorotoluene 70 130 92 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP #1210 <br /> Peggy Pen r <br /> Project Manager Page 1 <br />