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ENERGY 0 Trust our People.Trust our Data. I Billings,MT800.735.4489•Casper,WY888.235.0515 <br /> ` ',vrri' `' ' Gillette.WY 866.686.7175•Helena,MT 877.471.0111 <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: 07/07/17 13:30 <br /> Lab ID: C17070478-002 DateReceived: 07/14/17 <br /> Client Sample ID: Domestic Well(S30541) Matrix: Aqueous <br /> MCL/ <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date 1 By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 0.22 mg/L 0.01 E353 2 07/19/17 12:30/eli-b <br /> Phosphorus,Total as P ND mg/L 0.005 E365.1 07/19/17 15:08 f eli-b <br /> METALS, DISSOLVED <br /> Aluminum ND mg/L 0.2 E200.8 07/19/17 21:52/eli-b <br /> Antimony ND mg/L 0.001 E200.8 07/19/17 21:52/eli-b <br /> Copper 0.002 mg/L 0 001 E200.8 07/19/17 21:52/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 07/19/17 21:52/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0.2 E200.7 07/21/17 06:11/eli-b <br /> Antimony ND mg/L 0.001 E200 8 07/25/17 07.041 eli-b <br /> Copper 0.002 mg/L 0.001 E200.8 07/25/17 07:04/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 07/20/17 13:21/eli-b <br /> Silver ND mg/L 0.00005 E200.8 07/26/17 00:20/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 07/25/17 07:04/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 39.6 pCi/L E900.0 08/10/17 17:28/irs <br /> Gross Alpha precision(±) 8.2 pCi/L E900.0 08/10/17 17.28/irs <br /> Gross Alpha MDC 1.7 pCi/L E900.0 08/10/17 17:28/irs <br /> Gross Beta 18.9 pCi/L E900.0 08/10/17 17:28/irs <br /> Gross Beta precision(±) 2.7 pCi/L E900 0 08/10/17 17:28/irs <br /> Gross Beta MDC 3.2 pCi/L E900.0 08/10/17 17:28/irs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 37.3 feet FIELD 07/07/17 13:30/"' <br /> Field Conductivity 0.430 umhos/cm FIELD 07/07/17 13.30/"' <br /> Field pH 6.80 s.u. FIELD 07/07/17 13:301*** <br /> Field Temperature,C 11.7 °C FIELD 07/07/17 13:30/"' <br /> Oxidation-Reduction Potential(ORP) 73.3 mV FIELD 07/07/17 13:30/"' <br /> "'Field data provided by client <br /> Report RL-Analyte reporting limit. MCL-Maximum contaminant level. <br /> Definitions: OCL-Quality control limit ND-Not detected at the reporting limit. <br /> MDC-Minimum detectable concentration <br /> Page 4 of 24 <br />