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' Trust our Peo le.Trust our Data <br /> ENERGY � P j Billings.MT 800.135.4489•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: 08/21/17 <br /> Project: Schwartzwalder Mine S30519,S30521,S30523,S30525, Collection Date: 07/06/17 14:00 <br /> Lab ID: 017070253-004 DateReceived: 07/11/17 <br /> Client Sample ID: MW-20(S30525) Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date/By <br /> NUTRIENTS <br /> Nitrogen.Nitrate+Nitrite as N 0 15 mg/L 0.01 E353.2 07/14/17 12:09/eli-b <br /> Phosphorus,Total as P 0 598 mg/L 0.005 E365.1 07/17/17 13:56/eli-b <br /> METALS, DISSOLVED <br /> Aluminum 0.3 mg/L 0.2 E200 8 07/14/17 14:56/eli-b <br /> Antimony ND mg/L 0.001 E200 8 07/14/17 14:56/eli-b <br /> Copper 0 003 mg/L 0.001 E200.8 07/14/17 14:56/eli-b <br /> Thallium ND mg/L 0 0002 E200.8 07/14/17 14 56/eli-b <br /> METALS,TOTAL <br /> Aluminum 20.6 mg/L 0.2 E200.7 07/20/17 14.36/eli-b <br /> Antimony 0.002 mg/L 0 001 E200.8 07/28/17 14:36/eli-b <br /> Copper 0 048 mg/L 0 001 E200.8 07/17/17 23.52/eli-b <br /> Mercury 0.0001 mg/L 0 0001 E245 1 07/18/17 12:54/ell-b <br /> Silver 0 00274 mg/L 0.00005 E200 8 07/21/17 20:38/eli-b <br /> Thallium 0 0005 mg/L 0 0002 E200 8 07/25/17 20:27/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 662 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Alpha precision(±) 129 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Alpha MDC 3.2 pCi/L E900.0 08/10/17 02.37/trs <br /> Gross Beta 416 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Bela precision(±) 42.5 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Beta MDC 4 9 pCi/L E900.0 08/10/17 02:37/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 50.34 feet FIELD 07/06/17 14.00/*** <br /> Field Conductivity 894.8 umhos/cm FIELD 07/06/17 14:00/*** <br /> Field pH 6.85 s.u. FIELD 07/06/17 14.00/'" <br /> Field Temperature,C 25.7 °C FIELD 07/06/17 14.00/*** <br /> Oxidation-Reduction Potential(ORP) 466 mV FIELD 07/06/17 14 00/*** <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 /> Paae 6 of 32 <br />