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ENERGYTrust our People.Trust our Data. r-- Billings.MT 800.735.4489•Gasper,WY 888.235.0515 <br /> '''` "` / ". ,:l.:-f r '' ___�i Gillette,WY 866.686.7175•Helena.MT 817.412.0711 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper,WY Branch <br /> Client: Cotter Corporation Report Date: 08/25/17 <br /> Project: Schwartz Mine S30539,S30541, S30120, S30102, S301 Collection Date: 07/10/17 14:30 <br /> Lab ID: C17070478-004 DateReceived: 07/14/17 <br /> Client Sample ID: MW-1 (S30102) Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 0.88 mg/L 0.01 E353.2 07/19/17 12:32/eli-b <br /> Phosphorus,Total as P 0.009 mg/L 0.005 E365.1 07/19/17 15:11/eli-b <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 02 E200.8 07/19/17 21:57/eli-b <br /> Antimony ND mg/L 0 001 E200.8 07/19/17 21:57/eli-b <br /> Copper 0.002 mg/L 0.001 E200.8 07/19/17 21.57/eli-b <br /> Thallium ND mg/L 0 0002 E200.8 07/19/17 21:57/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200 7 07/21/17 06:25/eli-b <br /> Antimony ND mg/L 0.001 E200.8 07/25/17 07:17/eli-b <br /> Copper 0.002 mg/L 0,001 E200.8 07/25/17 07:171 eli-b <br /> Mercury ND mg/L 0.0001 E245.1 07/20/17 13:25/eli-b <br /> Silver ND mg/L 0.00005 E200.8 07/26/17 00:27/eli-b <br /> Thallium ND mg/L 0 0002 E200.8 07/25/17 07:17/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 649 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Alpha precision(±) 126 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Alpha MDC 2.5 pCi/L E900.0 08/10/17 17.28/trs <br /> Gross Beta 245 pCi/L E900 0 08/10/17 17:28/trs <br /> Gross Beta precision(±) 25 0 pCi/L E900 0 08/10/17 17:28/trs <br /> Gross Beta MDC 3.3 pCi/L E900 0 08/10/17 17:28/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Field Conductivity 0.68 umhos/cm FIELD 07/10/17 14:30/*** <br /> Field pH 6.71 s u. FIELD 07/10/17 1430/*** <br /> Field Temperature,C 11.4 °C FIELD 07/10/17 14:301"— <br /> Oxidation-Reduction Potential(ORP) 177.8 mV FIELD 07/10/17 14:30/*** <br /> ***Field data provided by client <br /> Report RI-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 /> Page 6 of 24 <br />