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Sequoia 404 Chesapeake Drive Redwood City (650)364-9600 FAX(650) 364-9233 <br /> a) <br /> 404 N Wiget lane Walnut Creek CAA 945984598 (925)4$8-9640 FAX(92 5)488-9673 <br /> 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 µ_ Client Prol ID Shell 2575 Country Club Blvd _ Sampled 07/29/98 <br /> - 1680 Rogers Avenue Sample Descript 2454 CC Received 07/30/98 „ <br /> San Jose, CA 95112 Matrix LIQUID <br /> Analysis Method EPA 8260 Analyzed 08/06/98 _ <br /> Attention Fran Thie __ Lab Number 98071-189-20 _ Reported 08119198 <br /> QC Batch-Number-MS080698MTBEH6B <br /> Instrument ID H6 <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) 20 N D <br /> DI-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETBE) 20 N D <br /> t-Amy! Methyl Ether (TAME) 20 N D <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dichloroethane-d4 76 114 97 <br /> i <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANA CAL - El_AP #1210 <br /> Peggy Pen er • <br /> Project Manager Page <br />