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ENERGY <br /> Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> Gillette,WY 866.686.7175•Helena,MT 877.472.0111 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Cotter Corporation Report Date: 01/08/18 <br /> Project: Schwartzwalder Mine Collection Date: 12/04/17 15:16 <br /> Lab ID: C17120211-005 DateReceived: 12/07/17 <br /> Client Sample ID: SW-BPL Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Fluoride 0 4 mg/L 0.1 A4500-F C 12/08/17 15 51/mvr <br /> INORGANICS <br /> Cyanide,Weak Acid Dissociable ND mg/L 0 005 Kelada-01 12/14/17 13.44/eli-b <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 0 01 mg/L 0 01 E353.2 12/11/17 16:26/1j1 <br /> Phosphorous,Total as Phosphate ND mg/L 0.03 Calculation 01/08/18 1350/sec <br /> Phosphorus,Total as P ND mg/L 0 005 E365 1 12/13/17 1505/IP <br /> METALS, DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.8 12/12/17 17 00/eli-b <br /> Antimony ND mg/L 0.001 E200.8 12/12/17 17 00/eli-b <br /> Molybdenum ND mg/L 0.005 E200.8 12/13/17 20.10/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 12/12/17 17.00/eli-b <br /> Uranium 0 0098 mg/L 0.0002 E200 8 12/13/17 20.10/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200 8 12/13/17 18:19/eli-b <br /> Antimony ND mg/L 0 001 E200.8 12/13/17 18.19/eli-b <br /> Arsenic 0 002 mg/L 0 001 E200.8 12/13/17 18:19/eli-b <br /> Boron ND mg/L 0 1 E200.7 12/16/17 05.28/eli-b <br /> Mercury ND mg/L 0.0001 E245 1 12/12/17 1519/eli-b <br /> Molybdenum ND mg/L 0.005 E200.8 12/13/17 18:19/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 12/13/17 18.19/eli-b <br /> Uranium 0 0101 mg/L 0.0002 E200 8 12/13/17 18.19/eli-b <br /> RADIONUCLIDES, DISSOLVED <br /> Radium 226 0 07 pCi/L U E903.0 12/28/17 06:16/arh <br /> Radium 226 precision(±) 0 1 pCi/L E903.0 12/28/17 0616/arh <br /> Radium 226 MDC 0.1 pCi/L E903.0 12/28/17 06 16/arh <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 9.2 pCi/L E900.0 12/18/17 23:20/cnh <br /> Gross Alpha precision(±) 3.9 pCi/L E900.0 12/18/17 23:20/cnh <br /> Gross Alpha MDC 3 8 pCi/L E900 0 12/18/17 23:20/cnh <br /> Gross Beta 2.3 pCi/L U E900 0 12/18/17 23.20/cnh <br /> Gross Beta precision(±) 2.7 pCi/L E900.0 12/18/17 23.20/cnh <br /> Gross Beta MDC 6.8 pCi/L E900.0 12/18/17 23.20/cnh <br /> Radium 226 0.3 pCi/L E903.0 01/07/18 12:04/arh <br /> Radium 226 precision(±) 0.2 pCdL E903.0 01/07/18 1204/arh <br /> Radium 226 MDC 0.3 pCi/L E903.0 01/07/18 12:04/arh <br /> Radium 228 0.9 pCi/L U RA-05 01/02/18 13:03/trs <br /> Radium 228 precision(±) 1 pCi/L RA-05 01/02/18 13:03/trs <br /> Radium 228 MDC 1.5 pCi/L RA-05 01/02/18 13:03/trs <br /> Report RL-Analyte reporting limit MCL-Maximum contaminant level. <br /> Definitions: QCL-Quality control limit. ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration U-Not detected at minimum detectable concentration <br /> Page 9 of 38 <br />