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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 Organic Compounds <br /> Laboratory Control Sample <br /> QC Batch# WMS 1001013 Date analyzed 10/13/00 <br /> Matrix Liquid Spiked Sample Blank Spike <br /> Units lig/L <br /> PARAMETER Method # SA SR SP SP SPD SPD RPD QC LIMITS <br /> µg/L µg/L µ9/L %R ug/L %R RPD ; %R <br /> X1,1-Dichloroethene 8240/8260 40 ND 344 86 332 J' 83 3 6 25 50-150 <br /> ;Benzene 8240/8260 40 ND 385 96 386 97 03 25 50-150 ; <br /> ;Tnchloroethene 8240/8260 40 ND 377 94 38 496 1 8 25 50-150 ; <br /> [ 1 <br /> Toluene 1 8240/8260 40 ND 372 93 39 1 98 1 5 0 25 50-150 <br /> , <br /> lChlorobenzene 8240/8260 40 1 ND 384 1 96 392 98 2 1 25 50-150 <br /> l.SllY1'OgCI1PS <br /> ;Toluene-d8 8240/8260 99% 97% p 99% 65-135 <br /> Dibromofluoromethane 8240/8260 106% ; 99% 91% ; 65-135 ; <br /> ;4-Bromofluorobenzene ; 8240/8260 93%, 94% 3 91% 1 1 65-135 ; <br /> ;MTBE-d3 1 8240/8260 1 1 135% ; 85% 176% 1 65-135 <br /> Definition of Terms <br /> na Not Analyzed in QC batch <br /> SA Spike Added <br /> SR Sample Result <br /> RPD(%) Duplicate Analysis- Relative Percent Difference <br /> SP Spike Result <br /> SP(%R) Spike%Recovery <br /> SPD Spike Duplicate Result <br /> SPD(%R) Spike Duplicate %Recovery <br />• <br />