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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(9Z5)988-9673 <br /> a- ) Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Prof ID Shell 2575 Country Club Blvd Sampled 10/06/98 <br /> 1680 Rogers Avenue Sample Descript RW-1A Received 10/08/98 <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method 8015Mod/8020 Analyzed 10/15/98 <br /> Attention Fran Thie Lab Number 9810742-14 Reported 10J27J98 <br /> QC Batch Number GC1 01 698BTEX03A <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 25000 110000 <br /> Methyl t-Butyl Ether - 5000 290000 <br /> Benzene 250 18000 <br /> Toluene 250 12000 <br /> Ethyl Benzene 250 2500 <br /> Xylenes (Total) 250 13000 <br /> Chromatogram Pattern GAS <br /> Surrogates Control Limits% % Recovery <br /> Trifluorotoluene 70 130 99 <br /> is <br /> Analytes repo ed as D were not present above the stated limit of detection <br /> SEQ AN LYTICAL - ELAP #1210 <br /> IlWy Penner <br /> Project Manager Page 8 <br />