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Trust our People.Trust our Data. <br /> ENERGY Bdhngs,MT 800.135.4489•Casper,WY 888.235.0515 <br /> . "'` " '� _ ______ Gillette,WY 866.686.7175•Helena,M1877.472.0111 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Cotter Corporation Report Date: 08/18/17 <br /> Project: Schwartzwalder Mine 7/31/17 530160,530162,560166 Collection Date: 07/28/17 10:25 <br /> Lab ID: 017080035-005 DateReceived: 08/01/17 <br /> Client Sample ID: MW-14(S30170) Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date!By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrate as N 0.01 mg/L 0.01 E353.2 08/04/17 14.04/fl <br /> Phosphorus,Total as P ND mg/L 0.005 E365.1 08/07/17 15.42/eli-b <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.7 08/07/17 22.12/ell-b <br /> Antimony 0.002 mg/L 0.001 E200 8 08/08/17 04:00/eli-b <br /> Copper ND mg/L 0.001 E200.8 08/08/17 04:00/eli-b <br /> Thallium ND mg/L 0 0002 E200.8 08/08/17 04:00/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200.7 08/07/17 17:22/eli-b <br /> Antimony 0.002 mg/L 0.001 E200.8 08/07/17 20:12/eli-b <br /> Copper ND mg/L 0.001 E200.8 08/07/17 20:12/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 08/08/17 11:24/eli-b <br /> Silver ND mg/L 0.00005 E200.8 08/07/17 20:12/eli-b <br /> Thallium ND mg/L 0,0002 E200.8 08/07/17 20:12/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 3.1 pCi/L E900,0 08/18/17 01:02/cng <br /> Gross Alpha precision(±) 1.6 pCi/L E900.0 08/18/17 01:02/cng <br /> Gross Alpha MDC 1.6 pCi/L E900.0 08/18/17 01:02/cng <br /> Gross Beta 2.4 pCi/L U E900.0 08/18/17 01:02/cng <br /> Gross Beta precision(±) 1.7 pCi/L E900.0 08/18/17 01:02/cng <br /> Gross Beta MDC 3.2 pCi/L E900.0 08/18/17 01:02/cng <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Field Conductivity 266 umhos/cm FIELD 07/28/17 10:25/"' <br /> Field pH 7.33 s.u. FIELD 07/28/17 10:25/*** <br /> Field Temperature,C 91 °C FIELD 07/28/17 10:25/"' <br /> Oxidation-Reduction Potential(ORP) -75 2 mV FIELD 07/28/17 10.251*" <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 U-Not detected at minimum detectable concentration <br /> Page 7 of 22 <br />