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BMW <br /> E 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: 02/15/18 <br /> Project: Schwartzwalder Mine Collection Date: 01/16/18 11:37 <br /> Lab ID: C18010461-005 DateReceived: 01/17/18 <br /> Client Sample ID: Mine Refill Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br /> MAJOR IONS <br /> Fluoride 2.7 mg/L 0.1 A4500-F C 01/19/18 11 25/mvr <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N ND mg/L 0.01 E353 2 01/19/18 12 24/dmb <br /> Phosphorus,Total as P 1.52 mg/L D 0.01 E365 1 01/24/18 13 10/Ijl <br /> METALS, DISSOLVED <br /> Aluminum ND mg/L 02 E200 8 01/19/18 20 43/eli-b <br /> Antimony ND mg/L 0.001 E200 8 01/19/18 20 43/eli-b <br /> Arsenic 0 007 mg/L 0.001 E200 8 01/19/18 20 43/eli-b <br /> Mercury ND mg/L 00001 E245 1 01/22/18 14 32/eli-b <br /> Molybdenum 0 132 mg/L 0 005 E200 8 01/19/18 20 43/eli-b <br /> Thallium ND mg/L 00002 E200.8 01/19/18 20-43/eli-b <br /> Uranium 234 mg/L 0.0002 E200 8 01/19/18 20 43/eli-b <br /> METALS,TOTAL <br /> Aluminum NO mg/L 02 E200.8 01/23/18 03-19/eli-b <br /> Antimony ND mg/L 0 001 E200 8 01/23/18 03 19/eli-b <br /> Arsenic 0 014 mg/L 0 001 E200 8 01/23/18 03 19/eli-b <br /> Boron 05 mg/L 01 E200 7 01/24/18 20-08/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 01/23/18 15-11 /eli-b <br /> Thallium ND mg/L 00002 E200 8 01/23/18 03 19/eli-b <br /> RADIONUCLIDES, DISSOLVED <br /> Radium 226 0.2 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 0.2 pCi/L E903 0 02/05/18 11.27/trs <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 20300 pCi/L E900 0 02/09/18 23:37/trs <br /> Gross Alpha precision(±) 3940 pCi/L E900 0 02/09/18 23.37/trs <br /> Gross Alpha MDC 457 pCi/L E900 0 02/09/18 23:37/trs <br /> Gross Beta 7990 pCi/L E900.0 02/09/18 23:37/trs <br /> Gross Beta precision(±) 811 pCdL E900 0 02/09/18 23:37/trs <br /> Gross Beta MDC 51 9 pCdL E900 0 02/09/18 23:37/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Field Conductivity 8630 umhos/cm FIELD 01/16/18 11.37/*** <br /> Field pH 745 s u FIELD 01/16/18 11:37/*** <br /> Field Temperature,C 16.8 °C FIELD 01/16/18 11-37/*** <br /> Oxidation-Reduction Potential(ORP) 221 mV FIELD 01/16/18 11:37/*** <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 D-RL increased due to sample matrix <br /> Page 8 of 31 <br />