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ENERGY 7 Trust our People.Trust our Data. Billings,MI 800.735.4489•Casper,WY 888.235.0515 <br /> 'i' J Gillette.WY 866.688.7175•Helena.MT 877.472.0711 <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 S30160,S30162,S60166 Collection Date: 07/26/17 09:45 <br /> Lab ID: Cl 7080035-001 DateRecelved: 08/01/17 <br /> Client Sample ID: MW-17(S30160) Matrix: Aqueous <br /> MCLI <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date I By <br /> NUTRIENTS <br /> Nitrogen,Nitrate*Nitrite as N ND mg/L 0.01 E353 2 08/04/17 13.57/Ijl <br /> Phosphorus,Total as P ND mg/L 0.005 E365.1 08/07/17 15:35/eli-b <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.7 08/07/17 21:58/eli-b <br /> Antimony ND mg/L 0 001 E200.8 08/08/17 03:23/eli-b <br /> Copper ND mg/L 0 001 E200.8 08/08/17 03.23/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 08/08/17 03:23/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200.8 08/07/17 1958/eli-b <br /> Antimony ND mg/L 0.001 E200.8 08/07/17 19:58/eli-b <br /> Copper ND mg/L 0 001 E200.8 08/07/17 19:58/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 08/08/17 11:16/eli-b <br /> Silver ND mg/L 0.00005 E200.8 08/07/17 19:58/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 08/07/17 1958/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 160 pCi/L E900.0 08/18/17 01:02/cng <br /> Gross Alpha precision(±) 32.7 pCi/L E900.0 08/18/17 01:02/cng <br /> Gross Alpha MDC 4.9 pCi/L E900 0 08/18/17 01:02/cng <br /> Gross Beta 29.2 pCi/L E900.0 08/18/17 01:02/cng <br /> Gross Beta precision(±) 4.4 pCi/L E900.0 08/18/17 01.02/cng <br /> Gross Beta MDC 7.2 pCi/L E900.0 08/18/17 01:02/cng <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Field Conductivity 2070 umhos/cm FIELD 07/26/17 09:45/"' <br /> Field pH 7.52 s.u. FIELD 07/26/17 09:45/"' <br /> Field Temperature,C 10.5 °C FIELD 07/26/17 09:45/"' <br /> Oxidation-Reduction Potential(ORP) 188.4 mV FIELD 07/26/17 09:45/'" <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 /> • <br /> Page 3 of 22 <br />