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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# WMS000628 Date analyzed 06/28/00 <br /> Matrix Liquid Spiked Sample Blank Spike <br /> Units µg/l, <br />' <br /> PARAME:E: Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> lag/L µg/L pg/L %R AS/L %R RPD %R <br /> X1,1-Dichloroethene I 8240/8260 40 ND 49 1 1 123 1 46 5 1 116 ' <br /> , 5 4 � 25 50-150 ; <br /> ,Methyl-tert-butyl ether ; 8240/8260 ; 40 ND ; 383 1 96 1 43 7 ; 109 ; 13 2 ; 25 ; 50-150 <br /> ;Benzene 8240/8260 40 ND 418 105 429 1 107 26 25 1 50-150 <br /> �Tnchloroethene 8240/8260 40 ND ; 394 1 96 472 20i 11 6 ; 25 f 50-150 <br /> ,Toluene I 8240/8260 40 ND 1 39 1 1 98 406 [ 102 1 3 $ 1 25 ' <br /> 1 ;Chlorobenzene 1 8240/8260 1 40 ; ND 1 41 2 i 103 430 108 j 4 3 ; 25 50-150 <br /> :Surrogates <br /> 1 <br /> 8240/8260 ' <br /> !Toluene d8 1 1 lOq% ; 97% 1 101% 1 1 65-135 I <br /> !D,bromolluoromethane 8240/8260 91% 89% 1 107% 1 ; ; i 65-135 <br />' 14-Bromofluorobenzene I 8240/8260 1 83% 1 83% 1 1 105% 1 i 65-135 <br /> ;MTBE-d3 8240/8260 11 94% 1 91% 1 1 106% 1 65-135 1 <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 />