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`XCE ' CHEM <br /> A19g`° �t , ENVIRONMENTAL LABS �... <br /> 500 Giuseppe Court, Suite 9 0 <br /> Roseville, CA 95678 <br /> Phone# 916 773-3664 Fax# (916) 773-4784 <br />' OA/()C REPORT <br /> Attention Mr Dale Anderson Date Analyzed 09-19-96 <br /> VERSAR Matrix Water <br /> 7844 Madison Ave, Ste 167 <br />' Fair Oaks, CA 95628 <br /> Project 3372-001/DSA Stockton Army Aviation <br />' Ethyl- Total <br /> MTBE Benzene Toluene benzene Xylenes <br /> PPB PPB PPB PPB PPB <br /> ReportmS Lmut 5 0 0 5 0 5 0 5 0 5 <br />' QA/QC PARAMETER <br /> Matrix Blank ND ND ND ND ND <br />' PERCENT RECOVERIES <br /> Matrix Spike 116% 96% 94% 96% 97% <br />' Matrix Spike 118% 98% 97% 98% 99% <br /> Duplicate <br /> ppb=parts per billion=ug/L-microg ran per titer <br /> ND =Not detected Compound(s)ma%be pre-wnt at concentrations below the reporting lural <br />' AB surrogate recoveries were within 30"/9 of target values. <br /> Spikes&Spike Duplicates were each spiked with 250 ng BTEX standard. <br /> Spikes&Spike Duplicates were each spiked with 250 ng MTBE standard <br />' ANALYTICAL PROCEDURES <br /> BTEX—Benzene,toluene,ethylbenzene,and total xylene isorners(BTEX)are measured by extraction using EPA Method 3030 followed by analysis <br /> using EPA Method 602 which utilizes a gas dn-omatogmph(GC)equipped with a phototonization detector(PID) <br /> NITBE (Methyl Tert-Butyl Ether)-MTBE is analyzed by EPA Method 602 which utilizes a gas chromatograph (GC) equipped with a <br /> photoionmation detector(PID) <br /> 3�-'Z6, 09-24-96 <br /> ab to esentative Date Reported <br /> finCELCHEM EVA IRONMENTAL LABS lSIERT*IED BY I11E 51'ATE UF 4ALlFOkNIA <br /> DEPARTMENTOF HEALTH SERVICES AS A IIAZAROOUS WASITESTINr,LABORATORY <br />' (Cat,fleutwn No 1760) <br />