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Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,WY 888.235.0515 <br /> `"m 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: 11/13/17 <br /> Project: Schwartzwalder Mine Collection Date: 10/11/17 12:25 <br /> Lab ID: C17100515-004 DateReceived: 10/13/17 <br /> Client Sample ID: Mine Refill Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> MAJOR IONS <br /> Fluoride 1.3 mg/L 0.1 A4500-F C 10/17/17 11:18/mvr <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 0.43 mg/L 0.01 E353.2 10/19/17 12.47/Ijl <br /> Phosphorus,Total as P 0.624 mg/L 0.005 E365.1 10/18/17 10:21/Ijl <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.8 10/26/17 16:22/eli-b <br /> Antimony 0.018 mg/L 0,001 E200.8 10/26/17 02:29/eli-b <br /> Arsenic 0 084 mg/L 0.001 E200 8 10/26/17 02:29/eli-b <br /> Mercury ND mg/L 00001 E245.1 10/18/17 13:15/eh-b <br /> Molybdenum 2.68 mg/L 0.005 E200 8 10/26/17 02:29/eli-b <br /> Thallium 0.0013 mg/L 00002 E200.8 10/26/17 16:22/eli-b <br /> Uranium 17.1 mg/L D 0.0008 E200.8 10/29/17 03:22/eli-b <br /> METALS,TOTAL <br /> Aluminum 03 mg/L 0.2 E200.7 10/25/17 02.33/eli-b <br /> Antimony 0.021 mg/L 0.001 E200.8 10/28/17 05:12/eli-b <br /> Arsenic 0.081 mg/L 0.001 E200.8 10/28/17 05:12/eli-b <br /> Boron 0.2 mg/L 0.1 E200.7 10/25/17 02.33/eli-b <br /> Mercury ND mg/L 00001 E245.1 10/18/17 13:50/eh-b <br /> Thallium 0.0024 mg/L 0.0002 E200.8 10/28/17 05:12/eli-b <br /> RADIONUCLIDES,DISSOLVED <br /> Radium 226 310 pCi/L E903.0 10/30/17 11:41/arh <br /> Radium 226 precision(±) 58.1 pCi/L E903.0 10/30/17 11:41/arh <br /> Radium 226 MDC 0.1 pCi/L E903.0 10/30/17 11:41/arh <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 14800 pCi/L E900.0 11/05/17 16:34/cnh <br /> Gross Alpha precision(±) 2870 pCi/L E900.0 11/05/17 16:34/cnh <br /> Gross Alpha MDC 19.6 pCi/L E900.0 11/05/17 16.34/cnh <br /> Gross Beta 22400 pCi/L E900.0 11/05/17 16:34/cnh <br /> Gross Beta precision{±) 2270 pCi/L E900,0 11/05/17 16:34/cnh <br /> Gross Beta MDC 31.3 pCi/L E900,0 11/05/17 16:34/cnh <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Field Conductivity 4353 umhos/cm FIELD 10/11/17 12.25/ <br /> Field pH 7.9 s.0 FIELD 10/11/17 12:25/ <br /> Field Temperature,C 15.1 'C FIELD 10/11/17 12:25/ <br /> Oxidation-Reduction Potential(ORP) 193.1 mV FIELD 10/11/17 12:25/ <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 D-RL increased due to sample matrix. <br /> Page 6 of 32 <br />