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' cb Curtis&Tompkins.Ltd. <br /> ' Batch QC Report <br /> Dissolved Metals Analytical Report <br /> Lab #: 260200 Location: DVI-Burn Pit <br /> Client: URS Corporation Prep: METHOD <br /> ' Project#: 17327022 Analysis: EPA 6020 <br /> Matrix: Filtrate Batch#: 215027 <br /> Units: ug/L Prepared: 09/03/14 <br /> Diln Fac: 5.000 Analyzed: 09/03/14 <br /> Type: BS Lab ID: QC756046 <br /> Analyte Spiked Result %REC Limits <br /> Arsenic 100.0 101.8 102 78-120 <br /> ' Barium 100.0 103.2 103 77-120 <br /> Cadmium 100.0 105.6 106 76-120 <br /> Chromium 100.0 101.6 102 77-120 <br /> Copper 100.0 105.7 106 72-120 <br /> Iron 10,000 10,960 110 72-123 <br /> Lead 100.0 103.8 104 78-120 <br /> Magnesium 10,000 10,340 103 68-123 <br /> Manganese 100.0 107.6 108 79-120 <br /> Molybdenum 100.0 101.1 101 74-120 <br /> Nickel 100.0 102.0 102 72-120 <br /> Selenium 100.0 105.8 106 79-120 <br /> ' Type: BSD Lab ID: QC756047 <br /> Analyte Spiked Result %REC Limits RPD Lim <br /> Arsenic 100.0 100.6 101 78-120 1 20 <br /> ' Barium 100.0 104.9 105 77-120 2 21 <br /> Cadmium 100.0 105.1 105 76-120 0 22 <br /> Chromium 100.0 102.0 102 77-120 0 20 <br /> ' Copper 100.0 106.1 106 72-120 0 20 <br /> Iron 10,000 11,230 112 72-123 2 26 <br /> Lead 100.0 104.5 105 78-120 1 20 <br /> Magnesium 10,000 10,390 104 68-123 0 20 <br /> Manganese 100.0 108.0 108 79-120 0 22 <br /> Molybdenum 100.0 101.5 102 74-120 0 20 <br /> Nickel 100.0 103.2 103 72-120 1 20 <br /> ' Selenium 100.0 106.6 107 79-120 1 27 <br /> ' RPD= Relative Percent Difference <br /> Page 1 of 1 19.0 <br /> ' 66 of 242 <br />