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ENERGY Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> Gillette,WY 866.686.1175•Helena,MT 877.472.0711 <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 09:55 <br /> Lab ID: C17120211-001 DateReceived: 12/07/17 <br /> Client Sample ID: MW-00 Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 0 04 mg/L 0.01 E353.2 12/11/17 16.18/Ijl <br /> Phosphorus,Total as P ND mg/L 0 005 E365 1 12/13/17 15:02/IjI <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200 8 12/12/17 1652/eli-b <br /> Antimony ND mg/L 0.001 E200.8 12/12/17 1652/eli-b <br /> Molybdenum ND mg/L 0.005 E200 8 12/13/17 19.45/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 12/13/17 19.45/eli-b <br /> Uranium 0 0032 mg/L 0.0002 E200 8 12/13/17 19 45/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200.8 12/13/17 17.45/eli-b <br /> Antimony ND mg/L 0 001 E200 8 12/13/17 17.45/eli-b <br /> Arsenic ND mg/L 0 001 E200 8 12/13/17 17 45/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 12/12/17 15.14/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 12/13/17 17:45/eli-b <br /> RADIONUCLIDES,DISSOLVED <br /> Radium 226 0.2 pCi/L E903 0 12/28/17 0615/arh <br /> Radium 226 precision(±) 0.1 pCi/L E903 0 12/28/17 0615/arh <br /> Radium 226 MDC 0 1 pCi/L E903 0 12/28/17 06.15/arh <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 5 6 pCi/L E900.0 12/18/17 23.20/cnh <br /> Gross Alpha precision(±) 2 9 pCi/L E900.0 12/18/17 23.20/cnh <br /> Gross Alpha MDC 2 8 pCi/L E900.0 12/18/17 23.20/cnh <br /> Gross Beta 2.9 pCi/L U E900.0 12/18/17 23.20/cnh <br /> Gross Beta precision(±) 2.9 pCi/L E900 0 12/18/17 2320/cnh <br /> Gross Beta MDC 6.3 pCi/L E900.0 12/18/17 23.20/cnh <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 9.0 feet FIELD 12/04/17 09 55/*** <br /> Field Conductivity 28.6 umhos/cm FIELD 12/04/17 0955/*** <br /> Field pH 7.2 s u. FIELD 12/04/17 09.55/*** <br /> Field Temperature,C 8 4 °C FIELD 12/04/17 09.55/*** <br /> Flow 0.33 gpm FIELD 12/04/17 09 55/*** <br /> ***Field data provided by client <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 />