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%Vtech 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#: WMS2000713 Date analyzed: 07/13/00 <br /> Matrix: Liquid Spiked Sample: Blank Spike <br /> Units: 49/L <br /> PARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> 99/L µ/L p9/L %R ILg/L %R RPD ; °,%R <br /> 1,1-Dichloroethene 1 8240/8260 40 1 ND 39.1 1 98 449 112 1 13.8 25 1 50-150 <br /> , <br /> ' <br /> ,Methyl-ter[-buryiether 8240/8260 ; 40 ; ND ; 37.1 ; 43 ; 42.4 ; 106 ; 13.3 ; 25 50-150 ; <br /> I 1 I I k 1 1 1 1 1 I 1 <br /> ;Benzene 8240/8260 40 ND 39.5 99 42.3 106 6.8 25 50-150 <br /> Trichloroethene 8240/8260 1 40 ND 1 51.4 129 47.4 l 119 1 8.1 1 25 1 50-150 <br /> 1 1 1 1 1 1 1 1 1 1 <br /> (Toluene , 8240/8260 , 40 , ND 1 37.9 1 95 1 39.3 1 98 1 3.6 1 25 1 50-150 t <br /> 1 <br /> 1Chlorobenzene 1 8240/8260 1 40 ND 1 38.2 1 96 1 41.0 1 103 1 7.1 1 25 1 50-150 <br /> 1 1 1 1 1 I 1 , I 1 1 1 <br /> i i 1 i i <br /> 1 1 1 1 i 1 1 1 1 1 1 1 <br /> , lllTOgQtPS 1 1 1 1 1 t I I 1 1 1 <br /> 1 1 1 1 1 1 t 1 I 1 1 1 <br /> 1MTBE-d3 1 8240/8260 1 i 114% 97% 1 1050,% i i 1 65-135 1 <br /> 1Dibromofluoromethane 1 8240/8260 1 1 112% 1 104% 1 110% 1 1 1 1 65-135 1 <br /> 1 1 1 I I 1 1 1 t I I 1 <br /> Toluene-d8 1 8240/8260 1 102% 1 100% 1 1 97% 1 1 1 1 65-135 1 <br /> I 1 1 , , 1 1 1 1 1 1 1 <br /> .4 Bromofluorobenzene 1 8240/8260 1 1 93% 1 94% 1 1101% ; 1 1 1 65-135 1 <br /> ' Definition oITerms: <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 /> 1 <br /> r <br />