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cbCurtis &Tompkins,ltd. <br /> Batch QC Report <br /> Volatile Organics <br /> La 218617 Location: Franks One Stop ' <br /> Client: URS Corporation Prep: EPA 5030B <br /> Pro'ect#: 17325996 Anal sis: EPA 8260B <br /> Matrix: Water Batc 160655 <br /> Units: ug/L Analyzed: 03/05/10 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC534993 <br /> Analyte S i e Result %REC Lamlts <br /> tert-Buty A co o TBA 125.0 127.3 102 36-156 <br /> Isopropyl Ether (DIPS) 25.00 25.97 104 54-139 <br /> Ethyl tert-Butyl Ether (ETBE) 25.00 24.42 98 64-133 <br /> Methyl tert-Amyl Ether (TAME) 25.00 23.29 93 73-124 <br /> 1,1-Dichloroethene 25.00 31.41 126 71-136 <br /> Benzene 25.00 27.26 109 81-122 <br /> Trichloroethene 25.00 26.83 107 80-124 <br /> Toluene 25.00 25.55 102 82-122 <br /> Chlorobenzene 25. 00 25.51 102 84-118 <br /> Surro ate REC Limits <br /> Dibromofluoromethane 104 81-124 <br /> 1,2-Dichloroethane-d4 91 73-140 <br /> Toluene-d8 94 88-113 <br /> Bromofluorobenzene 98 80-127 <br /> Type: BSD Lab ID: QC534994 <br /> Ana to S i e Result REC Limits RPD Lim <br /> tert-Buty A co o TBA 125.0 129.8 104 36-156 2 23 ' <br /> Isopropyl Ether (DIPE) 25.00 26.45 106 54-139 2 11 <br /> Ethyl tert-Butyl Ether (ETBE) 25.00 25.12 100 64-133 3 11 <br /> Methyl tert-Amyl Ether (TAME) 25.00 23.53 94 73-124 1 11 <br /> 1,1-Dichloroethene 25.00 32.13 129 71-136 2 15 <br /> Benzene 25.00 27.45 110 81-122 1 12 <br /> Trichloroethene 25.00 27.42 110 80-124 2 13 <br /> Toluene 25.00 25.30 101 82-122 1 12 <br /> Chlorobenzene 25.00 25.16 101 84-118 1 11 <br /> Surro ate REC Limits <br /> D1 romo uoromet ane 106 87124 <br /> 1,2-Dichloroethane-d4 92 73-140 <br /> Toluene-d8 93 88-113 <br /> Bromofluorobenzene 98 80-127 <br /> r <br /> r <br /> RPD= Relative Percent Difference <br /> Page 1 of 1 <br /> 38.0 <br /> 104 of 116 , <br />