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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 µg/kg <br /> ARA AETER Method# SA SR SP SP SPD SPD RPD QC LIMITS <br /> gg/kg µg/kg µg/kg %R n/kg %R RPD ; %R <br /> ;1,1-Dichloroethene 1 8240/8260 125 1 ND 1 23 1 93 22 90 1 39 25 50-150 <br /> I I t I I I I , 1 , <br /> 1 1 <br /> , <br /> ;Benzene 8240/8260 25 ND 27 108 27 1 106 1 15 25 50-150 <br /> :Tnchloroetiiene 1 1: 8240/8260 : 25 : ND : 24 : 97 1 25 1 98 1 08 : 25 50-150 1 <br /> 'Toluene : : <br /> 1 , <br /> 8240/8260 1 25 1 ND 1 25 1 101 26 1 104 1 2 7 1 25 50-150 , <br /> IChlorobenzene 1 $24018260 1 25 f ND I 24 I 1 97 1 25 1 99 1 1 20 1 25 I 50-150 , <br /> I I 1 1 t 1 1 1 1 1 l 1 <br /> 'Surrogates <br /> I O 1 1 1 1 1 I 1 1 I I 1 <br /> I 1 f 1 1 f 1 1 1 1 1 <br /> :Toluene-d8 : 8240/8260 1 :1 108% ; 104% : : 106% : 1 : 1 65-135 1 <br /> ,Dibromotuoromethane 8240/8260 91% i100/ i 99/ i i <br /> 65-135 , <br /> I <br /> 4-Bmmofluorobenzene 8240/8260 93% 1 103% ; 1 97% 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 />