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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> 404 N Wiget lane Walnut Creek CA 94598 (510)988-9600 FAX(510)988-9673 <br /> Iwo Analytical $19 Straker Avenue Suite$ 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 Prc�� ID Shell 2575 Country Club Sampled 04/23/98 <br /> = 1680 Rogers Avenue Sample Descrlpt RW-1A Received 04/24/98 <br /> San Jose, CA 95112 Matrix LIQUID _ <br /> - Analysis Method EPA 8260 Analyzed 05/07/98 <br /> -' Attention Fran Thie Lab Number 9804H08-14 _ Reported 05J12J98 <br /> Fuel Oxygenates by EPA 8260 <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> Ethanol 5000 N D <br /> t-Butanol 1000 N D <br /> Methyl t-Butyl Ether (MTBE) 20 690000 <br /> Dl-Isopropyl Ether (DIPE) 20 N D <br /> Ethyl t-Butyl Ether (ETRE) 24 N D <br /> t-Amyl Methyl Ether (TAME) 20 5300 <br /> Surrogates Control Limits % % Recovery <br /> 1,2-Dlchloroethane-d4 76 114 93 <br /> I <br /> Analytes reported as N D were not present above the stated limit of detection <br /> SEQUOIA ANALYT L - EI AP #1271 <br /> eggy Penne <br /> Project Manager Page 13 <br />