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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 Orgaruc Compounds <br /> Laboratory Control Sample <br /> QC Batch# SMS2000922A Date analyzed 09122 -09/23/00 <br /> Matrix Solid Spiked Sample Blank Spike <br /> Units gg/kg <br /> PARAMETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> 4g/kg µg/kg Ag/kg %R ug/kg %R RPD ; %R <br /> 11,1-Dichloroethene 8240/8260 25 ND 24 94 26 103 89 25 50-150 <br /> ,Benzene 8240/8260 25 ND 24 96 24 , 94 2 1 25 50450 ; <br /> ,Trichloroethene 8240/8260 25 , ND , 24 95 23 92 34 , 25 , 50-150 , <br /> ;Toluene 8240/8260 1 25 ND 25 100 1 24 97 1 32 25 50-150 1 <br /> ,Chlorobenzene' 8240/8260 25 ND 1 26 103 1 25 101 24 1 25 50-150 <br /> ,SldJ,ogates <br /> 8240/8260 109% 97% i 100% ; i i 65-135 <br /> ,Toluene-d8 , , <br /> 'Dibromofluoromethane 8240/8260 1 44% 109% ; 102% 65-135 <br /> �4-Bromofluorobenzene 8240/8260 + 91% 98% 1 107% 1 65435 <br /> 1,2-Dichloroedwe-d4* 8240/8260 102% 1 111% i 110% 65-135 <br /> Calculated Recoveries Outside of Recovery Limits <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 />