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CO - Trust our People.Trust our Data. <br /> ENERGYBillings,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: 08/25/17 <br /> Project: Schwartz Mine S30539, S30541,S30120,S30102,S301 Collection Date: 07/11/17 10.35 <br /> Lab ID: C17070478-005 DateReceived: 07/14/17 <br /> Client Sample ID: MW-7(S30106) Matrix: Aqueous <br /> MCL! <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date!By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 1.54 mg/L 0.01 E353.2 07/19/17 12:34/eli-b <br /> Phosphorus,Total as P 0.016 mg/L 0.005 E365.1 07/19/17 15:12/eli-b <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.8 07/19/17 22:001 eli-b <br /> Antimony ND mg/L 0.001 E200 8 07/19/17 22:00/eli-b <br /> Copper 0.002 mg/L 0,001 E200 8 07/19/17 22:00/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 07/19/17 22:00/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200 7 07/21/17 06:29/eli-b <br /> Antimony ND mg/L 0.001 E200.8 07/25/17 07:20/eli-b <br /> Copper 0.003 mg/L 0.001 E200.8 07/25/17 07:20/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 07/20/17 13:271 eli-b <br /> Silver ND mg/L 0 00005 E200.8 07/25/17 07:20/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 07/25/17 07:20/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 1360 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Alpha precision(±) 263 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Alpha MDC 4.1 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Beta 458 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Beta precision(±) 46.8 pCi/L E900.0 08/10/17 17:28/trs <br /> Gross Beta MDC 6.4 pCi/L E900.0 08/10/17 17:28/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Field pH 6.67 s.u. FIELD 07/11/17 10:35 I*" <br /> Field Temperature,C 13.2 `C FIELD 07/11/17 10 35/"' <br /> Oxidation-Reduction Potential(ORP) 191,6 mV FIELD 07/11/17 10:35/'" <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 /> Page 7 of 24 <br />