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CbCurfis&Tompkins.Lid. <br /> Batch QC Report <br /> Dissolved Metals Analytical Report 1 <br /> Lab #: 253472 Location: DVI-Burn Pit ' <br /> Client: URS Corporation Prep: METHOD <br /> Project#: 17327022 Analysis: EPA 6010B <br /> Matrix: Filtrate Batch#: 208194 ' <br /> Units: ug/L Prepared: 02/20/14 <br /> Diln Fac: 1.000 Analyzed: 02/20/14 <br /> 1 <br /> Type: BS Lab ID: QC728543 <br /> Analyte Spiked Result %REC Limits ' <br /> Arsenic 100.0 103.2 103 80-120 <br /> Barium 2, 000 1,905 95 80-120 ' <br /> Cadmium 50.00 52.57 105 80-120 <br /> Chromium 200.0 198.6 99 80-120 <br /> Copper 250.0 234.3 94 79-120 <br /> Iron 1,000 972.0 97 79-120 ' <br /> Lead 100.0 90.22 90 80-120 <br /> Magnesium 20,000 19,730 99 80-120 <br /> Manganese 50.00 50.93 102 80-120 ' <br /> Molybdenum 400.0 380.1 95 80-120 <br /> Nickel 500.0 499.7 100 80-120 <br /> Selenium 100.0 105.1 105 80-120 <br /> Type: BSD Lab ID: QC728544 ' <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> Arsenic 100.0 103.2 103 80-120 0 20 <br /> Barium 2,000 1,924 96 80-120 1 20 <br /> Cadmium 50.00 53.61 107 80-120 2 20 <br /> Chromium 200.0 198.6 99 80-120 0 <br /> 2 <br /> Copper 250.0 232.4 93 79-120 1 20 <br /> Iron 1, 000 932.1 93 79-120 4 21 <br /> Lead 100.0 92.27 92 80-120 2 20 <br /> Magnesium 20,000 19,070 95 80-120 3 20 <br /> Manganese 50.00 51.15 102 80-120 0 20 <br /> Molybdenum 400.0 390.0 98 80-120 3 20 <br /> Nickel 500.0 501.0 100 80-120 0 20 <br /> Selenium 100.0 104.9 105 80-120 0 20 <br /> RPD= Relative Percent Difference ' <br /> Page 1 of 1 22.0 <br /> Rd of J <br />