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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 <br /> Roseville, CA 95678 <br /> Phone#- (916) 773-3664 Fax#- (916) 773-4784 <br /> 0A/ C REPORT <br /> Attention Mr Matthew Taylor MBTEX Analyzed 05-13-96 <br /> WALLACE-KUHL& ASSOCIATES Matrix Water <br /> 3050 Industrial Blvd <br /> West Sacramento, CA 95691 <br /> Project 2938 031 P 0 1283 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes MTBE <br /> PPB PPB PPB PPB PPB <br /> Reporting Llmit 0 5 0 5 0 5 05 0 5 <br /> QA/QC PARAMETER <br /> Matrix Blank ND ND ND ND ND <br /> PERCENT RECOVERIES <br /> Matnx Spike 97% 9611/6 97% 97% 105% <br /> Matrix Spike <br /> 101% 1000/0 101% 102% 118% <br /> Duphcate <br /> ppb=parts per billion=ugn-=nnanga-per lrta <br /> ND —Not detected Compo-d(s)may be Pr-cm at"Owlrauons below the reportmg lumt. <br /> Ail surrogate reeoverres were whim 30%of target vahw& <br /> Spdm&Spr7te Duplicates were each spiked with 250 ng BTEX standard <br /> ANALYTICAL PROCEDURES <br /> BTEX—Baruria,toluene tdwlbav=and total xylaw loam(13M are nxasured by axt[ad�on usu►g EPA Method 5030 follor4ed by analvsrs usuw EP 4 <br /> Method 602 whrch utdr=a gas civonratog"aph(GC)equipped wnh a photoiammuon ddector(PID) <br /> MTBE(Methy Tort-Butyl Ether)—MTBE is anatgz by EPA Method 602 which uttives a gas clanntatogaQh(GC)e+qu ffed-th a photo,--dlon detexxor <br /> (Pm) <br /> 05-14-96 <br /> tLabatory Repr .tative Date Reported <br />