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r <br /> � Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650) 364-9233 <br /> 4 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> ! <br /> $19 Striker Avenue Surte 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> �II — Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 792-1865 FAX(707) 792 0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> _ Blaine Tech Services Client Prol ID Shell 620 W Charter Way Sampled 02/17/99 <br /> 1680 Rogers Avenue Sample Descript MW-8 Received 02/17/99 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 02/25/99 <br /> Attention Fran Thie Lab Number 9902875-08 Reported 03103J99 <br /> QC Batch Number GCO22599BTEX03A µ <br /> Instrument ID GCHP03 <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 45 <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 70 130 101 <br /> 0 <br /> Analytes reported as N 0 were not present above the stated limit of detection <br /> SEQUOIA ANALYTICAL - ELAP 41210 <br /> Z/""/- "`7 <br /> ffry <br /> ager Page 8 <br />