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• <br /> ENERGY Yv - - - g - <br /> Trust our People.Trust our Data 1 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: 08/21/17 <br /> Project: Schwartzwalder Mine S30519, S30521,S30523,S30525, Collection Date: 07/06/17 11:00 <br /> Lab ID: C17070253-002 DateReceived: 07/11/17 <br /> Client Sample ID: MW-00(S30521) Matrix: Aqueous <br /> MCLI <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrile as N 0.18 mg/L 0.01 E353 2 07/14/17 11:271 eli-b <br /> Phosphorus,Total as P 0.007 mg/L 0.005 E365 1 07/14/17 14:22/eli-b <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.8 07/14/17 14:51/eli-b <br /> Antimony ND mg/L 0.001 E200,8 07/14/17 14 51/eli-b <br /> Copper 0.001 mg/L 0 001 E200.8 07/14/17 14.51/eli-b <br /> Thallium ND mg/L 0 0002 E200 8 07/14/17 14.51/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200.8 07/17/17 2346/eli-b <br /> Antimony ND mg/L 0.001 E200.8 07/21/17 20:31 /eli-b <br /> Copper 0.001 mg/L 0.001 E200 8 07/17/17 23 46/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 07/14/17 15 49/eli-b <br /> Silver ND mg/L 0 00005 E200.8 07/21/17 20.31/eli-b <br /> Thallium ND mg/L 0 0002 E200.8 07/25/17 20.24/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 5.6 pCi/L E900.0 08/10/17 14:15/trs <br /> Gross Alpha precision(±) 2.1 pCi/L E900.0 08/10/17 14:15/trs <br /> Gross Alpha MDC 1.9 pCi/L E900 0 08/10/17 14:15/trs <br /> Gross Beta 3.7 pCi/L U E900 0 08/10/17 14.15/trs <br /> Gross Beta precision(±) 2.0 pCi/L E900.0 08/10/17 14:15/trs <br /> Gross Beta MDC 3.8 pCi/L E900.0 08/10/17 14:15/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 9.15 feet FIELD 07/06/17 11:00/*** <br /> Field Conductivity 0 196 umhos/cm FIELD 07/06/17 11:00/*** <br /> Field pH 7.17 s.u. FIELD 07/06/17 11:00/*** <br /> Field Temperature,C 9.5 °C FIELD 07/06/17 11:001*** <br /> Oxidation-Reduction Potential(ORP) 133.6 mV FIELD 07/06/17 11 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 U-Not detected at minimum detectable concentration <br /> Page 4 of 32 <br />