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ENERGY 47.4 Trust our People.Trust our Data. n T� Billings.MT 800.735.4489•Casper,WY 888.235.0515 <br /> —__-_i 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: 07/07/17 09:30 <br /> Lab ID: C17070253-005 DateReceived: 07/11/17 <br /> Client Sample ID: Sump 1 (S30527) Matrix: Aqueous <br /> MCU <br /> Analyses Result Units Qualifiers RL QCL Method Analysis Date!By <br /> NUTRIENTS <br /> Nitrogen,Nitrate+Nitrite as N 0.41 mg/L 0.01 E353 2 07/14/17 11.35/eli-b <br /> Phosphorus,Total as P 0.006 mg/L 0.005 E365.1 07/17/17 13:57/eli-b <br /> METALS,DISSOLVED <br /> Aluminum ND mg/L 0,2 E200.8 07/14/17 14:58/eli-b <br /> Antimony ND mg/L 0 001 E200 8 07/14/17 14:58/eli-b <br /> Copper 0.013 mg/L 0.001 E200.8 07/14/17 14:58/eli-b <br /> Thallium ND mg/L 0.0002 E200 8 07/14/17 14.58/eli-b <br /> METALS,TOTAL <br /> Aluminum ND mg/L 0 2 E200.8 07/18/17 00:06/eli-b <br /> Antimony ND mg/L 0.001 E200.8 07/21/17 20 41/eli-b <br /> Copper 0.013 mg/L 0.001 E200.8 07/18/17 00.06/eli-b <br /> Mercury ND mg/L 0.0001 E245.1 07/14/17 15.59/eli-b <br /> Silver ND mg/L 0 00005 E200.8 07/21/17 20 41/eli-b <br /> Thallium ND mg/L 0.0002 E200.8 07/24/17 18:42/eli-b <br /> RADIONUCLIDES,TOTAL <br /> Gross Alpha 508 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Alpha precision(±) 98 9 pCi/L E900.0 08/10/17 02 371 trs <br /> Gross Alpha MDC 2.5 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Beta 202 pCi/L E900 0 08/10/17 02.37/trs <br /> Gross Beta precision(t) 20.7 pCi/L E900.0 08/10/17 02:37/trs <br /> Gross Beta MDC 2 9 pCi/L E900 0 08/10/17 02:37/trs <br /> CLIENT PROVIDED FIELD PARAMETERS <br /> Depth to Water 7.24 feet FIELD 07/07/17 09.30/"' <br /> Field Conductivity 0 92 umhos/cm FIELD 07/07/17 09:30/"' <br /> Field pli 7.3 s.u. FIELD 07/07/17 09:30/"' <br /> Field Temperature,C 15 5 °C FIELD 07/07/17 09.30/*** <br /> Oxidation-Reduction Potential(ORP) 158 5 mV FIELD 07/07/17 09:30/"' <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 32 <br />