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Quality Control Sample • <br /> Batch Report <br /> An a l ys isl I n farmati o n <br /> Workorder: 1204433 <br /> Limits: Historical/Performance Preparation: NA - Analysis: EPA TO-15 <br /> Basis: ALS Laboratory Group Batch: NA Batch: IVOA/1902(HBN:61151) <br /> Prepared By: NA Analyzed By: Lisa M.Reid <br /> MB: 259821 <br /> Analyzed: 02/15/2012 16:59 <br /> Units'. ppb <br /> AnsIyte ='< -gat_- RL --__ <br /> Methyl t-butyl ether ND 0.05 <br /> 1,1,1-Trichloroethane ND 0.05 <br /> Benzene ND 0.05 <br /> 1,1,2-Trichloroethane ND 0.05 <br /> Toluene ND 0.05 <br /> Tetrachloroethene ND 0.05 <br /> 1,2-Dibromoethane ND 0.05 <br /> Ethyl benzene ND 0.05 <br /> m,p-Xylene ND 0.05 <br /> o-Xylene ND 0.05 <br /> 1,1,2,2-Tetrachloroethane ND 0.05 <br /> Laboratory Control Sample- Laboratory Control Sample Duplicator, <br /> LCS: 259819 LCSD: 259820 <br /> Analyzed: 02/15/2012 15:44 Analyzed: 02/15/2012 16:22 <br /> ppb <br /> A c' R<F.10 Target '%RecoveryQC Limits Result '. RPD QC Limits <br /> Methyl t-butyl ether 0.389 0.5 77.7 62.1 125.1 0.405 4.11 0 25 <br /> 1,1,1-Trichloroethane 0.505 0.5 101 60.3 142.3 0.501 0.785 0 25 <br /> Benzene 0.441 0.5 88.3 60 144.6 0.408 7.95 0 25 <br /> 1,1,2-Trichloroethane 0.415 0.5 83.1 54.7 138.3 0.423 1.86 0 25 <br /> Toluene 0.379 0.5 75.7 64.2 128.8 0.397 4.69 0 25 <br /> Tetmchlomethene 0.409 1 0.5 81.8 63.6 127.9 0.489 17.9 0 25 <br /> 1,2-Dibmmoethane 0.405 0.5 81 70 130 0.425 1 4.86 10 125 <br /> Ethyl benzene 0.334 0.5 66.7 43.3 138.8 0.37 10.4 0 25 <br /> m,p-Xylene 0.775 1 77.5 40.8 139.9 0.785 1.28 0 25 <br /> o-Xylene 0.352 0.5 70.4 36.7 145.1 0.331 6.03 0 25 <br /> 1,1,2,2-Tetrachloroethane 0.394 0.5 78.8 70 130 0.395 0.32 0 25 <br /> Surrogate Recoveries <br /> ss Brcmofluorobenzene <br /> QC 48.8 151 8 <br /> iit'iC: Ppb <br /> L,,,, Result Sargct "to,.R ' <br /> 259819-LCS 0.529 0.5 106 <br /> 259820-LCSD 0.497 0.5 99.5 <br /> 259821-MB 0.449 0.5 89.8 <br /> 1204433001 0.473 0.5 94.6 <br /> Page 1 of 2 Friday,February 17, 2012 QCS V2.0 <br />