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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9633 <br /> 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 /> IIo Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Blaine Tech Services Client Pro) 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 _EPA 8260 Analyzed 100%16/98—, <br /> Attention Fran Thie Lah Number 9810742-17 Reported 10J27798 <br /> QC Batch Number MS101498MTBEH6B <br /> Instrument ID HIS <br /> Oxygenate Compounds (EPA 8260) <br /> Analyte Detection Limit Sample Results <br /> ug/L. ug/L <br /> Ethanol 500 N D <br /> t-Butanol 100 N D <br /> Methyl t-Butyl Ether (MTBE) i 20 N D <br /> Di-Isopropyl Ether (DIPS) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 20 N D <br /> t-Amyl Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits% % Recovery <br /> 1,2-Dichloroethane-d4 76 114 96 <br /> Analytes reported were not present above the stated limit of detection <br /> SEQUOI ANA YTICAL - ELAP #1210 <br /> Project Manager Page t� <br />