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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#: SMS000417 Date analyzed: 04/17/00 <br /> Matrix: Solid Spiked Sample: Blank Spike <br /> Units: 49/k8 <br /> PARAMETER Method# SA SR SP SP SPD SPD RPD 1 QC LIMITS <br /> Fr E µg/kg ? 1i9/k9 Pg/kg ' %R nikg %R RPD <br /> I1,1-Dichloroethene 1 8240/8260 25ND 22.3 89 21.9 88 1.8 25 + 65-135 <br /> :Benzene 8240/8260 25 ND 26.0 104 25.5 102 1.9 25 65-135 <br /> ;Trichloroethene 8240/8260 25 ND 26.6 106 27.3 109 2.6 25 65-135 ; <br /> !Toluene 8240/8260 1 25 1 NII 1 26.2 105 25.9 1 104 1 1.2 25 65-135 <br /> Chlorobenzene <br /> 8240/8260 ! 25 1 ND ! 25.8 .1 103 1 25.3 1 101 1 2.0 1 25 1 65-135 ! <br /> LSU?Oga1PS <br /> :Toluene-d8 8240/8260 1 1 103% 1 104% 1 1 101% : 1 1 1 65-135 1 <br /> IDibromofluoromethane 1 8240/8260 1 1 100% 1 110% 1. 1 107% : 1 1 1. 65-135 : <br /> 14-Bromofluorobenzene : 8240/8260 1 1 103% 1 111% 1 1 109% 1 1 1 1 65-135 1 <br /> 1,2-Dichloroethane-d4 1 8240/8260 1 1 108% 1 130% 1 1 125_% 1 1 1 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 /> NC: Not Calculated <br /> L " <br />