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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#: SMS000720 Date analyzed: 07/20/00 <br /> Matrix: Solid Spiked Sample: BIank Spike <br /> Units: µg/kg <br /> ` PARAMETER Method# SA 1 SR SP SP SPD SPD RPD QC LIMITS ' <br /> Ftg/kg ' fag/kg ': 48/kg ? %R gg/kg •' %R RPD <br /> 11,1-Dichloroethene 1 8240/8260 1 25 ND 189 76 17.0 68 10.6 25 1 65-135 <br /> I , 1 1 I I 1 <br /> 1 ,! E 1 I 1 <br /> !Benzene 8240/8260 1 25 ' ND 1 23.5 94 22.1 ' 88 1 6.1 25 65-135 1 <br /> 1 ! 1 I 1 , 1 1 1 ! 1 1 <br /> ;Trichloroethene 8240/8260 11 25 ; ND 23.3 ; 93 21.2 ; 85 ; 9.4 ; 25 ; 65-135 ; <br /> 1 , ] l 1 ] 1 ! I ! I 1 <br /> ;Toluene 8240/8260 1 25 ND ; 24.8 1 99 22.8 91 8.4 1 25 1 65-135 ; <br /> 1 1 1 1 1 <br /> IChlawbenzene 8240/5260 , 25 I ND 1 24.7 , 99 1 23.0 1 92 1 7.1 25 I 65-135 I <br /> ■ 1 e ! 1 1 f { ' ' ' <br /> L I <br /> 1 <br /> 1 1 1 <br /> 1 1 1 <br /> ;Surrogbates <br /> ;Toluene-d8 8240/8260 ! E I 11 ; 96% ; 94% 1 ; 92% ; ; ; 65-135 ; <br /> 1 ° ° 1 . 1 ° 65-135 <br /> IDibromoflaoromethane I $2401$260 1 97% I 96/° 1 , <br /> I , 1 E I I F 93/0 i 1 ; ; ' <br /> 14-Bromofluorobenzene 1 8240/8260 t 80% 1 86% 1 1 86% 1 ; <br /> 65-135 <br /> ' <br /> 1 'i ! F 1 1 1 F 1 1 —135 <br /> MTBE-d3 1 8240/9260 , 1 103% 1 98% 1 1 100% I 1 1 1 1 65-135 <br /> 1 F I 1 1 <br /> U� <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 /> II <br /> it � ' <br />