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M.W. www.energylab.com Helena, MT 877-472-0711 • Billings MT 800-735-4489 Casper, WY 888-235-0515 <br />° 4`? n M9lytig/fxca!/eaceSinca 1851 j Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 Colleee Station. TX 888-99D-221 A <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwaider Mine Monitoring Program-Surface Wat Collection Date: 11/18/10 10:20 <br />Lab ID: C101 10787-002 DateReceived: 11/22/10 <br />Client Sample ID: SW ARH (S25437) Matrix: Aqueous <br />MCU <br />Analyses Result Units Qualifiers RL QCL Method <br />MAJOR IONS <br />Alkalinity, Total as CaC03 105 mg/L <br />Bicarbonate as HC03 129 mg/L <br />Calcium 58.9 mg/L <br />Chloride 45 mg/L <br />Fluoride ND mg/L <br />Magnesium 21.5 mg/L <br />Nitrogen, Nitrate+Nitrite as N ND mg/L <br />Phosphate, Total ND mg/L <br />Phosphorus, Total as P ND mg/L <br />Potassium 2.9 mg/L <br />Sodium 24.6 mg/L <br />Sulfate 117 mg/L <br />NON-METALS <br />Cyanide, Weak Acid Dissociable ND mg/L <br />PHYSICAL PROPERTIES <br />Solids, Total Dissolved TDS @ 180 C 358 mg/L <br />Solids, Total Suspended TSS @ 105 C ND mg/L <br />METALS - DISSOLVED <br />Aluminum ND mg/L <br />Antimony ND mg/L <br />Copper ND mg1L <br />Iron ND mg/L <br />Manganese 0.011 mg/L <br />Molybdenum 0.013 mg/L <br />Silver ND mg/L <br />Thallium ND mg/L <br />Uranium 0.402 mg/L <br />Zinc ND mg/L <br />METALS - TOTAL <br />Aluminum ND mg/L <br />Antimony ND mg/L <br />Arsenic ND mg/L <br />Boron ND mg/L <br />Chromium ND mg/L <br />Copper ND mg/L <br />iron 0.04 mg/L <br />Lead ND mg/L <br />Manganese 0.013 mg/L <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />D - RL increased due to sample matrix. <br />Analysis Date / By <br /> 1 A2320 B 11 /23/10 17:13 / jba <br /> 1 A2320 B 11/23/10 17:13 / jba <br />D 0.5 E200.7 12101/10 10:27 / ell-h <br /> 3 E300.0 11/24/10 04:25 / Ijl <br /> 0.5 E300.0 11/24/10 04:25 / Ill <br />D 0.5 E200.7 12/01/10 10:271 eli-h <br /> 0.1 E353.2 12/02/10 10:05 / eli-b <br /> 0.01 Calculation 12103/10 08:03 / bal <br /> 0.01 E365.1 11/29/10 14:58 / eli-b <br />D 0.5 E200.7 12/01 /10 10:27 / eli-h <br />D 0.5 E200.7 12/01 /10 10:27 / eli-h <br /> 5 E300.0 11/24/10 04:25 / Ill <br /> 0.002 D2036 11/24/10 12:57 / eli-b <br /> 10 A2540 C 11/22/10 14:55 / Ir <br /> 4 A2540 D 11/24/10 09:101 Ir <br /> 0.2 E200.8 11/30/10 19:03 / eli-h <br /> 0.001 E200.8 11/30/10 19:03 / eli-h <br /> 0.001 E200.8 11/30/10 19:03 / eli-h <br /> 0.03 E200.8 11130/10 19:03 / eli-h <br /> 0.005 E200.8 11/30/10 19:03 / eli-h <br /> 0.005 E200.8 11 /30/10 19:03 / eli-h <br /> 0.00005 E200.8 12/01/10 19:52 / eli-h <br /> 0.0002 E200.8 11/30/10 19:03 / ell-h <br /> 0.0002 E200.8 11/30110 19:03 / eli-h <br /> 0.005 E200.8 11/30/10 19:03 / ell-h <br /> 0.2 E200.7 12/10/10 17:36 / cp <br /> 0.001 E200.8 12/10/10 05:17 / sml <br /> 0.0005 E200.8 12/10/10 05:17 / sml <br /> 0.1 E200.7 12/10/10 17:36 / cp <br /> 0.001 E200.8 12/17/10 01:46 / sml <br /> 0.001 E200.8 12/10/10 05:17 / sml <br /> 0.03 E200.7 12110/10 17:36 / cp <br /> 0.005 E200.8 12110110 05:17 / sml <br /> 0.005 E200.7 12110110 17:36 / cp <br /> MCL - Maximum contaminant level. <br /> ND - Not detected at the reporting limit . <br />Page 4 of 30