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EXCELCHEM <br /> ENVIRONMENTAL LABS <br /> 500 Giuseppe Court, Suite 9 0 <br /> Roseville, CA 95678 <br /> Phone# (916) 773-3664 :ax# (916) 773-4784 <br />' <br /> ()A/OC REPORT <br />' Attention Mr Claudio Avila Date Analyzed 03-03-97 <br /> EMCON Matrix Sod <br />' 1433 North Market Boulevard <br /> Sacramento, CA 95834 <br />' Project 22605-10101/IBC <br /> Ethyl- Total <br />' Benzene Toluene benzene Xylenes <br /> PPM PPM PPM PPM <br /> Reporting Limit 0 005 0 005 0 005 0 005 <br />' QA/QC PARAMETER <br /> Matrix Blank ND ND ND ND <br /> PERCENT RECOVERIES <br />' Matrix Spike 90% 91 / 91/ 92/ <br />' Matrix Spike 96% 96% 96% 97% <br /> Duplicate _ <br />' ppm=parts per million=mg/kg=milligram per kilogram <br /> ND =Not detected Compound(s)may be present at,-oncentratloms bi luw the porting lima <br /> All surrogate recoveries were within 30%of target values. <br /> Spikes&Spike Duplicates were each spiked with 250 ng BTEC standard. <br />' %%AL%I[(,%I PkCPC LDt,RES <br /> BTF—X--Benzene,toluene ethylbeuzene and total xylene Isomers(BTTrX)are measured by extraction using EPA Method 5030 followed by analysts <br /> usmg EPA Method 8020 which utilizes a gas chromatograph(GC)equipped wch a phototonrzauon detector(PID) <br />' 03-10-97 <br /> La oratory Representative Date Reported <br /> FXCELC HFkl FNVIRONMENTAL LAI3S IS CER"7"1£D BY THE ST ATE OF CALIFORNIA <br /> UPART41fVI()FHFAITHSFRV1CF%A1, 1 n,_._DQUS%hASTETESTING LABORATORI <br />' (C.t[hncatrc+n ti -001 <br />