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Entech Analytical Labs,Inc. _ 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> QUALITY CONTROL RESULTS SUMMARY <br /> Volatile Orgaiuc Compounds <br /> Laboratory Control Sample <br /> QC Batch# WMS000329 Date analyzed 03/29/00 <br /> Matrix Liquid Spiked Sample Blank Spike <br /> Units µg/L <br /> ARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> µg/L µg/L pg/L %R lid %R RPD ; %R <br /> 11,1-Dichloroethene ; 8240/8260 40 1 ND ; 43 8 ; 110 1 40 5 ; 101 1 7 8 1 25 50-i50 1 <br /> r , i , r <br /> ;Methyl-tert-butyl ether 8240/8260 40 ND 41 3 103 41 8 105 1 12 1 25 ; 50-150 ; <br /> ;Benzene 8240/8260 40 ND 428 107 424 106 11 09 25 50-150 <br /> 1Tnchloraethene 8240/8260 1 40 1 ND 1 414 1 104 446 112 1 74 ; 25 50-150 <br /> Toluene 1 8240/8260 1 40 ND 425 106 1 424 1 106 1 02 25 50-150 <br /> ;Chlorobenzene 1 8240/8260 1 40 ND 421 105 427 107 1 14 25 50-150 <br /> rSumogates r r <br /> 1Towene{l8 1 8240/8260 1 100% ; 99% 98% 1 65-135 <br /> 0bromofluoromethane 8240/8260 1 1 103% 1 99% 1 110% ; 1 1 1 65-135 1 <br /> 14-Bromofluorobenzene 1 8240/8260 1 - 1 95% 1 96% 1 1 112% 1 1 1 1 65-135 <br /> 'MTBE-d3 8240/8260 1 108% 101% 1 102% 65-135 <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> SA Spike Added <br /> SR Sample Result <br /> RPD(%) Duplicate Analysts-Relative Percent Difference <br /> SP Spike Result <br /> SP(%R) Spike%Recovery <br /> SPD Spike Duplicate Result <br /> SPD(%R) Spike Duplicate%Recovery <br />