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ntech Analytical Labs,Inc. <br /> 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#: WMS000331 Date analyzed: 03/31/00 <br /> Matrix: Liquid Spiked Sample: Blank Spike <br /> Units: pg/L <br /> ARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> ll 11 !1 %R !ice %R RPD ; %R <br /> !1,1-Dichloroethene 1 8240/8260 140 1 ND 40.3 101 42.6 107 5.5 25 50-150 <br /> r 1 , i r r t <br /> ' !Methyl-tert-butyl ether 8240/8260 1 40 I ND 40.3 101 42.0 105 4.1 25 50-150 ; <br /> ;Benzene 8240/8260 40 ND41.0 103 42.4 1 106 3.4 25 1 50-150 ; <br /> 13 I 1 I <br /> ,Trichloroethene 1 8240/8260 40 r ND r 41.4 r 104 47.7 r 119 r 14.1 r 25 r <br /> r i r r r r r r r 50-150 <br /> 'Toluene 1 8240/8260 1 40 I ND 1 41.1 1 103 1 42.0 105 1 2.2 25 50-150 I <br /> 1 1Chlorobenzene i <br /> 8240/8260 ! 40 ! ND ! 41.5 1 104 1 42.6 1 107 ! 2.6 25 ! 50-150 I <br /> r <br /> l s"' ales <br /> r g <br /> ;Toluene-d8 1 8240/8260 i r 1 98% 1 95% 99% 1 1 65-135 1 <br /> 0bromofluoromethane 1 8240/8260 1 1 105% 1 100% 1 1 113% 1 1 1 165-135 1 <br /> 14-Bromofluorobenzene 1 8240/8260 1 95% 1 99% 1 1 110% 1 1 65-135 1 <br /> 1 1 1 1 I I 1 <br /> !MTBE-d3 1 8240/8260 ! 97% 105% ! 1 105% 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 /> 1 <br /> 1 <br /> • <br /> i <br /> 1 - <br />