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819 Sinker Avenue,Suite 8 <br /> Sequoia <br /> Sacramento )9 99634 <br /> O q (916)92l 9600 <br /> —'j FAX oAnalytical www sequotaiabs coin <br />' IT Corporation-Sacramento Project NIA <br /> 1326 N Market Blvd Project Number 880-0391A/01030000 Reported <br /> Sacramento CA,95834 Project Manager Tom Allan 01/28/02 14 19 <br /> Total Purgeable Hydrocarbons and BTEX in Air(ppmv) by DHS LUFT-Quality Control <br /> Sequoia Analytical-- Sacramento <br /> Reporting Spike Source %REC RFD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />' Batch 2010263-EPA 5030B(PIT) <br /> Blank(2010263-BLKI) Pre ared&Analyzed 01/18/02 <br /> Purgeable Hydrocarbons ND 2 8 ppmv <br /> Benzene ND 0 016 ;; <br /> Toluene 00238 0 013 " A-01 <br /> Ethylbenzene ND 0 012 <br /> Xylenes(total) ND 0 012 " <br /> Surrogate a a a-Trifluorotoluene 0 313 0 335 934 60-140 <br /> LC5 2010263-BSl Prepared&Analyzed 01/18/02 <br />' Surrogate aaa-Trrfluorotaluene 0322 ppmv 0 335 961 60-140 <br /> LCS Du 2010263-BSD7 Prepared&Analyzed 01/18/02 <br /> Surrogate a a a-Trrfluorotoluene 0.317 ppmv 0 333 946 60-140 <br /> i <br /> 1 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed to accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety <br /> Page Page 5 of 6 <br />