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MEW - I I r Trust our People.Trust our Data. f 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: 02/15/18 <br /> Project: Schwartzwalder Mine Collection Date: 01/12/18 15:57 <br /> Lab ID: C18010461-002 DateReceived: 01/17/18 <br /> Client Sample ID: MW-0 Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 034 mg/L 001 E353 2 01/19/18 12.21 /dmb <br /> Phosphorus,Total as P ND mg/L 0 005 E365.1 01/24/18 10:24/Ijl <br /> METALS, DISSOLVED <br /> Aluminum ND mg/L 02 E200 8 01/19/18 20:46/eli-b <br /> Antimony ND mg/L 0.001 E200 8 01/19/18 20:46/eli-b <br /> Molybdenum 0 015 mg/L 0 005 E200.8 01/19/18 20.46/eli-b <br /> Thallium ND mg/L 00002 E200.8 01/19/18 20:46/eli-b <br /> Uranium 0 619 mg/L 00002 E200 8 01/19/18 20:46/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 02 E200 8 01/23/18 02 59/eli-b <br /> Antimony ND mg/L 0.001 E200 8 01/23/18 02 59/eli-b <br /> Arsenic ND mg/L 0.001 E200 8 01/23/18 02 59/eli-b <br /> Mercury ND mg/L 0.0001 E245 1 01/23/18 15 09/eli-b <br /> Thallium ND mg/L 0.0002 E200 8 01/23/18 02 59/eli-b <br /> RADIONUCLIDES, DISSOLVED <br /> Radium 226 0.6 pCi/L E903 0 02/05/18 11.27/trs <br /> Radium 226 precision(±) 02 pCi/L E903.0 02/05/18 11.27/trs <br /> Radium 226 MDC 0.2 pCi/L E903 0 02/05/18 11 27/trs <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 526 pCi/L E900.0 02/09/18 23:37/trs <br /> Gross Alpha precision(±) 102 pCi/L E900 0 02/09/18 23:37/trs <br /> Gross Alpha MDC 27 pCi/L E900.0 02/09/18 23:37/trs <br /> Gross Beta 123 pCi/L E900 0 02/09/18 23 37/trs <br /> Gross Beta precision(±) 127 pCi/L E900 0 02/09/18 23 37/trs <br /> Gross Beta MDC 2.8 pCi/L E900 0 02/09/18 23-37/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 12.95 feet FIELD 01/12/18 15 57/*** <br /> Field Conductivity 803 umhos/cm FIELD 01/12/18 15.57/*** <br /> Field pH 6.76 s u FIELD 01/12/18 15 57/*** <br /> Field Temperature,C 104 °C FIELD 01/12/18 15.57/*** <br /> Flow 0.4 gpm FIELD 01/12/18 15 57/*** <br /> Oxidation-Reduction Potential(CRP) 313.3 mV FIELD 01/12/18 15 57/*** <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 5 of 31 <br />