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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# SMS2000929 Date analyzed 09/29/00 <br /> Matrix Solid Spiked Sample Blank Spike <br /> Units 49/kg <br /> PARAMETER Method# SA SR SP SP SPD SPD RPD <br /> QC LIMITS <br /> µg/kg 4g/kg ug/kg %R Mg/kg %R RPD ; %R <br /> 1,1-Dichloroethene 8240/8260 i 25 I ND 23 93 1 ' <br /> 22 90 3 9 25 50-150 <br /> ;Benzene 8240/8260 ; 25 1 ND 27 108 27 106 15 25 50-150 <br /> ;Trichloroethene ; 8240/8260 ;1 25 ; ND ; 24 97 25 98 0 8 25 50-150 ' <br /> i <br /> Toluene 8240/8260 25 ND 25 101 ; 26 1 104 27 25 50-150 <br /> :Chlorobenzene 8240/8260 25 s' ND 24 so 97 25 1 99 20 1 25 1 50-150 <br /> 1 , <br /> ; <br /> ;Surrogates <br /> 1 <br /> ;Toluene d8 8240/8260 1 108% ; 104% 106% ; 65-I35 <br /> �Dibromofluoromethane 8240/8260 ; 91% 100% ; 99% ; 65-135 <br /> 14-Bmtnofluorobenzene 8240/8260 1 93% � 103% � � 97% 1 � � 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 />