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E Trust our People.Trust our Data. Billings,MT 800.735.4469•Casper,WY 888.235.0515 <br /> I "' 1 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: 03/02/18 <br /> Project: Schwartzwalder Mine Collection Date: 01/25/18 11:25 <br /> Lab ID: C18020046-001 DateReceived: 02/05/18 <br /> Client Sample ID: MW-19 Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 070 mg/L 001 E353 2 02/07/18 11.15/dmb <br /> Phosphorus,Total as P 0 092 mg/L 0.005 E365.1 02/09/18 10:15/dmb <br /> METALS, DISSOLVED <br /> Aluminum ND mg/L 0.2 E200 8 02/07/18 19.30/eli-b <br /> Antimony ND mg/L 0.001 E200 8 02/07/18 19 30/eli-b <br /> Molybdenum 0 041 mg/L 0.005 E200.8 02/07/18 19.30/eli-b <br /> Thallium ND mg/L 0.0002 E200 8 02/07/18 19.30/eli-b <br /> Uranium 1 07 mg/L 0.0002 E200 8 02/08/18 13.13/eli-b <br /> METALS,TOTAL <br /> Aluminum 1.1 mg/L 0.2 E200 7 02/08/18 15 29/eli-b <br /> Antimony ND mg/L 0 001 E200 8 02/08/18 16 45/eli-b <br /> Arsenic ND mg/L 0.001 E200 8 02/08/18 16 45/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 02/09/18 14 34/eli-b <br /> Thallium ND mg/L 00002 E200 8 02/08/18 16.45/eli-b <br /> RADIONUCLIDES, DISSOLVED <br /> Radium 226 1 9 pCi/L E903 0 02/14/18 15.51 /arh <br /> Radium 226 precision(±) 0.5 pCi/L E903.0 02/14/18 15.51 /arh <br /> Radium 226 MDC 02 pCi/L E903 0 02/14/18 15.51 /arh <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 597 pCi/L E900 0 02/21/18 22.36/trs <br /> Gross Alpha precision(±) 116 pCi/L E900 0 02/21/18 22 36/trs <br /> Gross Alpha MDC 29 pCi/L E900 0 02/21/18 22.36/trs <br /> Gross Beta 191 pCi/L E900 0 02/21/18 22 36/trs <br /> Gross Beta precision(±) 196 pCi/L E900.0 02/21/18 22.36/trs <br /> Gross Beta MDC 33 pCi/L E900 0 02/21/18 22.36/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 17.55 feet FIELD 01/25/18 11.25 <br /> Field Conductivity 761 umhos/cm FIELD 01/25/18 11 25 <br /> Field pH 6.74 s.u. FIELD 01/25/18 11.25 <br /> Field Temperature,C 130 °C FIELD 01/25/18 11.25 <br /> Flow 0.75 gpm FIELD 01/25/18 11.25 <br /> Oxidation-Reduction Potential(ORP) 2544 mV FIELD 01/25/18 11.25 <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 41 <br />