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4 <br /> EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> W <br /> 500 Giuseppe Court, Suite 9 0 <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 Fax# (916) 773-4784 <br /> ANAIGYSTS-REPORT <br /> Attention Mr Todd Brown Date Sampled 04-16-97 <br /> Secor Date Received 04-18-97 <br /> 1390 Willowpass Road, Suite 360 MTBE Analyzed 04-23-97 <br /> Concord, CA 94520 <br /> Project J0710-001-01/Time Oil -Locke Ford Matrix Water <br /> Sample ID MW-10 <br /> Lab ID W0497179 <br /> Reporting Measured <br /> Compound Limit(ppb) Value(ppb) _ <br /> Methyl tert--Butyl Ether (MTBE) 5 ND <br /> Ppb=Parts per billion=ug/1.=micrograms per liter <br /> ND=Not detected Compound(s)may be present at concentrations below the reporlmg lamit <br /> Surrog.tic A,coven - 1 2-Dichlorcx-thine d-4 =97% <br /> Dtbromofluoromethane =96% <br /> Toluene d 8 W 94% <br /> 4-Bromofluorobenzene = 90% <br /> ANALYTICAL PROCEDURES <br /> MTBE— Methyl lert-Butyl Ether is measured using EPA Method 8260 which utilizes a purge and trap interfaced to a gas chromatograph(GC) <br /> equipped with a mass ep,,ctrometer <br /> 04-29-97 <br /> 4ratory Representative Date Reported <br />