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cbCurtis &Tompkins,ltd. <br /> Batch QC Re ort <br /> Volatile Organics <br /> La 218617 Location: Fran s One Stop <br /> Client: URS Corporation Prep: EPA 5030B <br /> Pro'ect#: 17325996 Anal sis: EPA 8260B <br /> Matrix: Water Batc 160666 <br /> Units: ug/L Analyzed: 03/05/10 <br /> Diln Fac: 1.000 <br /> Type: BS Lab ID: QC535020 <br /> Ana to Spiked Result %REC Limits <br /> tert-Butyl A co o TBA 125. 0 108 .9 87 36-156 <br /> Isopropyl Ether (DIPS) 25.00 20.90 84 54-139 <br /> Ethyl tert-Butyl Ether (ETBE) 25.00 21.32 85 64-133 <br /> Methyl tert-Amyl Ether (TAME) 25.00 20.68 83 73-124 <br /> 1,1-Dichloroethene 25.00 28.03 112 71-136 <br /> Benzene 25.00 26.10 104 81-122 <br /> Trichloroethene 25.00 24.78 99 80-124 <br /> Toluene 25.00 25.68 103 82-122 <br /> Chlorobenzene 25.00 26.45 106 84-118 <br /> Surro ate REC Limits <br /> Dibromofluoromethane 94 81-124 <br /> 1,2-Dichloroethane-d4 91 73-140 <br /> Toluene-d8 102 88-113 <br /> Bromofluorobenzene 100 80-127 <br /> Type: BSD Lab ID: QC535021 <br /> Ana to 5 i e Result <br /> REC Limits RPD Lim <br /> tert-Buty Alcohol (TBA 125.0 99.68 80 36-156 9 23 <br /> Isopropyl Ether (DIPE) 25.00 19.96 80 54-139 5 11 <br /> Ethyl tert-Butyl Ether (ETBE) 25.00 20.12 80 64-133 6 11 <br /> Methyl tert-Amyl Ether (TAME) 25.00 20.15 81 73-124 3 11 <br /> 1,1-Dichloroethene 25.00 26.63 107 71-136 5 15 <br /> Benzene 25.00 23 .93 96 81-122 9 12 <br /> Trichloroethene 25.00 24.01 96 80-124 3 13 <br /> Toluene 25.00 26.05 104 82-122 1 12 <br /> Chlorobenzene 25.00 25.87 103 84-118 2 11 <br /> 1 Surro ate REC Limits <br /> Di romo uoromet ane 93 81-124 <br /> 1,2-Dichloroethane-d4 89 73-140 <br /> Toluene-d8 103 88-113 <br /> Bromofluorobenzene 97 80-127 <br /> RPD= Relative Percent Difference <br /> 40.0 <br /> Page 1 of 1 <br /> 107 of 116 <br /> 1 <br />