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" www.ertrgylab.com Helena, MT 877 - 472 -0711 • Billings, MT 600- 735 -4489 • Casper, WY 888- 235 -0515 <br />• °p1 e 1 Gillette, WY 866 -666 -7175 • Rapid City, So 888 -672 -1225 • College Station, TX 888 - 690 -2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 12/1/14 S27819 <br />Lab ID: 014120084 -001 <br />Client Sample ID: Mine Refill (S27819) <br />Report Date: 12/18/14 <br />Collection Date: 12/01/14 08:15 <br />Date Received : 12/02/14 <br />Matrix: Aqueous <br />Analyses <br />Result <br />Units Qualifiers <br />RL <br />MCL/ <br />QCL Method <br />Analysis Date / By <br />NON - METALS <br />Organic Carbon, Total (TOC) <br />3.2 <br />mg /L <br />0.5 <br />A5310 C <br />12/03/14 17:29 / alp <br />METALS - DISSOLVED <br />Arsenic <br />0.032 <br />mg /L <br />0.001 <br />E200.8 <br />12/09/14 22:30 / clm <br />Barium <br />ND <br />mg /L <br />0.05 <br />E200.7 <br />12/03/14 17:26 / sf <br />Iron <br />15.6 <br />mg /L <br />0.03 <br />E200.7 <br />12/03/14 17:26 / sf <br />Manganese <br />2.04 <br />mg /L D <br />0.008 <br />E200.7 <br />12/03/14 17:26 / sf <br />Molybdenum <br />1.11 <br />mg /L D <br />0.04 <br />E200.7 <br />12/03/14 17:26 / sf <br />METALS - TOTAL <br />Arsenic <br />0.027 <br />mg /L <br />0.001 <br />E200.8 <br />12/05/14 20:20 / clm <br />Barium <br />ND <br />mg /L <br />0.05 <br />E200.8 <br />12/05/14 20:20 / clm <br />Iron <br />15.8 <br />mg /L <br />0.03 <br />E200.7 <br />12/05/14 22:57 / sf <br />Manganese <br />1.88 <br />mg /L <br />0.001 <br />E200.8 <br />12/05/14 20:20 / clm <br />Molybdenum <br />1.12 <br />mg /L <br />0.001 <br />E200.8 <br />12/05/14 20:20 / clm <br />RADIONUCLIDES - TOTAL <br />Radium 226 <br />224 <br />pCi /L <br />E903.0 <br />12/16/14 07:32 / rdw <br />Radium 226 precision ( ±) <br />2.9 <br />pCi /L <br />E903.0 <br />12/16/14 07:32 / rdw <br />Radium 226 MDC <br />0.18 <br />pCi /L <br />E903.0 <br />12/16/14 07:32 / rdw <br />Radium 228 <br />1.9 <br />pCi /L <br />RA -05 <br />12/11/14 10:12 / plj <br />Radium 228 precision ( ±) <br />0.85 <br />pCi /L <br />RA -05 <br />12/11/14 10:12 / plj <br />Radium 228 MDC <br />1.3 <br />pCi /L <br />RA -05 <br />12/11/14 10:12 / plj <br />Radium 226 + Radium 228 <br />226 <br />pCi /L <br />A7500 -RA <br />12/17/14 16:46 / res <br />Radium 226 + Radium 228 precision ( ±) <br />3.0 <br />pCi /L <br />A7500 -RA <br />12/17/14 16:46 / res <br />Radium 226 + Radium 228 MDC <br />1.3 <br />pCi /L <br />A7500 -RA <br />12/17/14 16:46 / res <br />FIELD PARAMETERS <br />Field Conductivity <br />3095 <br />umhos /cm <br />FIELD <br />12/01/14 08:15 / * *' <br />Field pH <br />7.10 <br />s.u. <br />FIELD <br />12/01/14 08:15 / * ** <br />Field Temperature, C <br />18.2 <br />°C <br />FIELD <br />12/01/14 08:15 / * *' <br />Flow <br />190 <br />gpm <br />FIELD <br />12/01/14 08:15 / <br />Oxidation - Reduction Potential (ORP) <br />350 <br />mV <br />FIELD <br />12/01/14 08:15 / "* <br />*" Field data provided by client <br />Report RL - Analyte reporting limit. <br />Definitions: OCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />D - RL increased due to sample matrix. <br />Page 2 of 12 <br />