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rlEntech 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# WM5000731 Date analyzed 07/31/00 <br /> Matrix Liquid Spiked Sample Blank Spike <br />' Units µg/- <br /> PARAMETER Method,* SA SR SP SP SPD SPD RPD QC LIMITS <br />' will, ug/L ue/L %R ug/L %R RPD %R <br /> 1 8240/8260 40 1 ND 465 1 116 1 43 7 109 62 25 50-150 it <br /> ,1,1-Dic3iloroethe�e , <br /> ;Methyl-tent-butyl ether 118240/8260 40 ND 39 1 98 429 107 93 25 50-150 ; <br />' ;Benzene 8240/8260 40 ND 44S 112 44 -3 111 1 1 15 � 50-150 1 <br /> !Tnchloroethene 8240/8260 40 1 ND 43 5 109 436 109 02 25 50-150 <br /> Foluene 1 8240/8260 40 ND 451 I 113 1 416 1 104 81 1 25 50-150 <br /> :Chiorobenzene 8240/8260 40 1 ND 1 441 ; 110 41 1 1 103 70 25 50-150 <br /> 1 , <br /> !Surrogates <br /> ;Toluene-d8 8240/8260 ; 93% ; 96% 94% 1 65-135 <br /> , <br /> 1Dihromofluoromethane 8240/8260 1 95% 1 97% i 102% 1 65-135 <br />' 14-Bromofluorobenzene 1 8240/8260 1 1 94°% 1 93% 1 1 101% 1 ; 65-135 { <br /> :MTBE-d3 ii8240/8260 '1 ; 74% 79% 91% 65-135 <br /> ODefinition of Terms <br /> na Not Analyzed to 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 />