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i <br /> 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 /> IQC Batch# WMS991016 Date analyzed 10/16/99 <br /> MatniL Liquid Spiked Sample Blank Spike <br /> Units 11811- <br /> € � � <br /> PARAMETER ! Method# i SA i SR SP SP SPD s SPD RPD QC LIMITS <br /> µB/1- 118 - 118 - %R i !18/1 I %R ; RPD %R <br /> I 1 I-Dichlorocthcm 8240/8260 40 ; ND ; 393 I 98 ; 3811 95 3 1 ; 25 50-150 ; <br /> Methyl-tert-butyl ether 8240/8260 40 ND 518 130 451 I 113 I 13 9 25 50-150 <br /> ;Benzene 8240/8260 40 ; ND 425 106 ; 41 1 1 103 3 3 ; 25 ; 50-150 ; <br /> ' <br /> ITnchloroelhene 8240/8260 1 40 1 ND 416 t 109 422 1 105 1 14 25 1 0-150 <br /> I <br /> ;Toluene 8240/8260 I 40 1 ND 429 107 418 1 104 1 2 6 25 50-150 <br /> 1Chlorobcnzcnc ; 8240/8260 ; 40 , ND ; 411 ; 103 ; 403 ; 101 ; 2 0 ; 25 ; 50-150 ; <br /> Surrogates <br /> ;Di6romofi , <br /> thuoromeane ; 8240/8260 ; ; 109% ; 94% ; ; 920/. ; ; ; ; 65-135 ; <br /> ,Ivl'1'BL'-d3 8240/8260 ; , 75% , 138% ; ; 121% , <br /> 65-135 <br /> 65-135 <br /> Toluene-d8 8240/8260 80% 102% 100% , <br /> ;4-Bromofluorobenzene 8240/8260 71% ; 104% ; 1034/)o ; ; 65-135 <br /> tDefinition 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 /> 1 <br /> 1 <br />