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01 • Trust our People.Trust our Data. Billings,MT 800,735.4489•Casper,WY 888.235.0515 <br /> Gillette,WY 866-686.7175•Helena.MT 877.472.0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Cotter Corporation Report Date: 11/21/17 <br /> Project: Schwartzwalder Mine Collection Date: 10/20/17 12:02 <br /> Lab ID: C17100880-001 DateReceived: 10/26/17 <br /> Client Sample ID: MW-11 Matrix: Aqueous <br /> MCLI <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br /> PHYSICAL PROPERTIES <br /> Oxygen Demand,Chemical(COD) NO mg/L 5 HACH 8000 10/31/17 09:44!dmb <br /> NUTRIENTS <br /> Nitrogen, Nitrate+Nitrite as N 0.76 mg/L 001 E353.2 10/31/17 15:33/Ijl <br /> Phosphorus,Total as P 0.075 mg/L 0.005 E365.1 10/30/17 09:53/ljl <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200 7 11/02/17 10 41/eli-b <br /> Antimony ND mg/L 0 001 E200.8 11/06/17 14 52/eli-b <br /> Molybdenum ND mg/L 0,005 E200.8 11/06/17 14.52/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 11/06/17 14:52/eli-b <br /> Uranium 00005 mg/L 0.0002 E200.8 11/06/17 14.52/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 02 E200.7 11/01/17 17:38/eli-b <br /> Antimony ND mg/L 0.001 E200.8 11/02/17 0119/eli-b <br /> Arsenic ND mg/L 0.001 E200.8 11/02/17 01:29/eli-b <br /> Boron ND mg/L 0.05 E200.7 11/01/17 17:38/eli-b <br /> Mercury ND mg/L 0.0001 E245 1 11/01/17 14.18/eli-b <br /> Thallium ND mg/L 00002 E200.8 11/02/17 01:29/eli-b <br /> Uranium 0.0009 mg/L 0.0003 E200 8 11/02/17 01:29/eli-b <br /> RADIONUCLIDES, DISSOLVED <br /> Radium 226 0.2 pCi/L U E903.0 11/05/17 11:07/arh <br /> Radium 226 precision(±) 0.2 pCi/L E903.0 11105/17 11:071 arh <br /> Radium 226 MDC 0.3 pCi/L E903,0 11/05/1711:07/arh <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 7.8 pCi/L E900.0 11/10/17 03:03/cnh <br /> Gross Alpha precision(±) 2.1 pCi/L E900.0 11/10/17 03:03/cnh <br /> Gross Alpha MDC 1 4 pCi/L E900.0 11/10/17 03:03/cnh <br /> Gross Beta 13.1 pCi/L E900 0 11/10/17 03.03/cnh <br /> Gross Bela precision(±) 25 pCi/L E900.0 11/10117 03:03/cnh <br /> Gross Beta MDC 3.5 pCi/L E900.0 11/10/17 03:03/cnh <br /> Radium 226 02 pCi/L E903.0 11/13/17 13:01/arh <br /> Radium 226 precision(±) 0.2 pCi/L E903.0 11/13/17 13:01/arh <br /> Radium 226 MDC 0.2 pCi/L E903.0 11/13/17 13:01/arh <br /> Radium 228 0.2 pCi/L U RA-05 11/08/17 12:11/trs <br /> Radium 228 precision(±) 13 pCi/L RA-05 11/08/17 12:11 /trs <br /> Radium 228 MDC 2.2 pCi/L RA-05 11/08/17 12:11/Us <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 4 of 38 <br />