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r Trust our People.Trust our Data. r Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> G 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: 02/15/18 <br /> Project: Schwartzwalder Mine Collection Date: 01/12/18 14:42 <br /> Lab ID: C18010461-001 DateReceived: 01/17/18 <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 004 mg/L 001 E353 2 01/19/18 12:17/dmb <br /> Phosphorus,Total as P ND mg/L 0 005 E365.1 01/24/18 10-20/Ijl <br /> METALS, DISSOLVED <br /> Aluminum ND mg/L 0.2 E200 8 01/19/18 20 36/eli-b <br /> Antimony ND mg/L 0 001 E200 8 01/19/18 20 36/eli-b <br /> Molybdenum ND mg/L 0 005 E200 8 01/19/18 20.36/eli-b <br /> Thallium ND mg/L 00002 E200 8 01/19/18 20 36/eli-b <br /> Uranium 0,0038 mg/L 00002 E200.8 01/19/18 20:36/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 02 E200 8 01/23/18 02 55/eli-b <br /> Antimony ND mg/L 0 001 E200 8 01/23/18 02 55/eli-b <br /> Arsenic ND mg/L 0 001 E200 8 01/23/18 02:55/eli-b <br /> Mercury ND mg/L 00001 E245.1 01/23/18 15.07/eli-b <br /> Thallium ND mg/L 00002 E200 8 01/23/18 02:55/eli-b <br /> RADIONUCLIDES, DISSOLVED <br /> Radium 226 02 pCi/L E903 0 02/05/18 11 27/trs <br /> Radium 226 precision(±) 01 pCi/L E903 0 02/05/18 11 27/trs <br /> Radium 226 MDC 02 pCi/L E903 0 02/05/18 11.27/trs <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 4.6 pCi/L E900.0 02/09/18 23-37/trs <br /> Gross Alpha precision(±) 1.9 pCi/L E900 0 02/09/18 23.37/trs <br /> Gross Alpha MDC 1 9 pCi/L E900 0 02/09/18 23 37/trs <br /> Gross Beta 3.3 pCi/L E900 0 02/09/18 23.37/trs <br /> Gross Beta precision(±) 1 5 pCi/L E900.0 02/09/18 23:37/trs <br /> Gross Beta MDC 28 pCi/L E900.0 02/09/18 23:37/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 8.46 feet FIELD 01/12/18 14 42/*** <br /> Field Conductivity 359 umhos/cm FIELD 01/12/18 14 42/*** <br /> Field pH 7.12 s u FIELD 01/12/18 14.42/*** <br /> Field Temperature,C 6.7 °C FIELD 01/12/18 14.42/*** <br /> Flow 0 286 gpm FIELD 01/12/18 14-42/*** <br /> Oxidation-Reduction Potential(ORP) 3402 mV FIELD 01/12/18 14.42/*** <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 <br /> Page 4 of 31 <br />