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t <br /> ntech Analytical Labs, Inc. 525 Del Rey Avenue,Suite E <br /> Sunnyvale,CA 94086 <br /> 1 QUALITY CONTROL RESULTS SUNIA ARY <br /> Volatile Organic Compounds <br /> Laboratory Control Sample <br /> QC Batch #: WNIS000509 Date analyzed: 05/09/00 <br /> Matrix: Liquid Spiked Sample: Blank Spike <br /> Units: p;'L <br /> PARAMETER Method n SA 5R SP SP SPD SPD RPD QC LIMITS <br /> pg/L 1 lag/L %R ug/L %R RPD %R <br /> I.I-Dichloroethene 8240/8260 <br /> 40 ; ND I 40.3 ; 10i 42.7 107 ; 5.8 25 50-150 <br /> ;Methyl-tort-butyl ether 8240/8260 40 ND 36.2 91 ; 38.0 95 4.9 25 50-150 <br /> ;Benzene 8240/8260 40 ND 38.8 97 ; 40.5 101 4.3 ; 25 ; 50-I50 <br /> (Trichloroethene ; 8240/8260 I 40 I ND ; 41.7 ; 104 ; 44.0 ; I10 ; 5.4 25 50-150 ] <br /> Toluene 8240/8260 1 40 ND 37.6 9.3 3:1.-4j <br /> � 2.1 25 50-150 t <br /> �ChlorobenN <br /> zene ; 8240/8260 40 1 D 39.6 99 41.1 103 3.7 25 50-150 <br /> ;Toluene-d8 8240/8260 ; 91go./. I 89-. I 65-135 I <br /> Dibromo11uoromethane 8240/8260 108% 103% 1041!" 65-135 <br /> -1-Bromofluorobenzene 1 8240/8260 89% 96% I I 96% 1 ; 65-135 <br /> ;MTBE-0 8240/8260 113°'0 ; 100% ; 99°u 65-135 <br /> Definition of Terms: <br /> na: Not Analyzed in QC batch <br /> 1 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 /> i <br /> 1 <br /> 1 <br /> 1 <br /> • <br /> I <br /> i <br />