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Www.energytab.com ( Helena, MT 677472-0711 • Billings, MT 800.735409 + vesper, WY 886-235-0515 <br />Aarb'N 9Ettapenca $1sca 193Y J Gillette, WY 866-686-7175 • Rapid City, SD 686-672-1225 • College Station, TX 868-680-2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/18/11 <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wat Collection Date: 12/09/10 11:51 <br />Lab ID: C10120398-008 DateReceived: 12/10/10 <br />Client Sample ID: SW BPL (S25509) Matrix: Aqueous <br /> - <br />MCL/ ...-....... .---_-.- ....... ................. <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />MAJOR IONS <br />Alkalinity, Total as CaC03 98 mg!L 1 A2320 B 12/10/10 22:121 jba <br />Bicarbonate as HC03 120 mg/L 1 A2320 B 12/10/10 22:12 / jba <br />Calcium 55.9 mg/L D 0.4 E200.7 12/22/10 18:35 / cp <br />Chloride 47 mg/L 3 E300.0 12/17/10 01:34 / Ijl <br />Fluoride 0.3 mg/L 0.1 A4500-F C 12/16/10 09:41 i jba <br />Magnesium 20.6 mg/L 0.1 E200.7 12/22/10 18:35 / cp <br />Nitrogen, Nitrate+Nitrite as N 0.2 mg/L 01 E353.2 12/17/10 10:121 eli-b <br />Phosphate, Total ND mg/L 0.01 Calculation 01/06/11 09:39 / bat <br />Phosphorus, Total as P ND mg/L 0.01 E365.1 12/16/10 14:36 / eli-b <br />Potassium 2.6 mg/L 0.1 E200.7 12/22/10 18:35 / cp <br />Sodium 20.9 mg/L D 0.6 E200.7 12122/10 18:35 / cp <br />Sulfate 112 mg/L 5 E300.0 12/17/10 01:34 / Ijl <br />NON-METALS <br />Cyanide. Weak Acid Dissociable ND mg!L 0.002 D2036 12/14/10 14:49 / eli-b <br />PHYSICAL PROPERTIES <br />Solids, Total Dissolved TDS @ 180 C 349 mg/L 10 A2540 C 12/13/10 13:16! Ir <br />Solids, Total Suspended TSS @ 105 C NO mg/L 4 A2540 D 12/13110 16:52 / Ir <br />METALS - DISSOLVED <br />Aluminum ND mg/L 0.2 E200.7 12122110 18:35 / cp <br />Antimony ND mg/L 0.001 E200.8 12/28/10 01:05 / sml <br />Copper ND mg/L 0.001 E200.8 12/28/10 01:05 / sml <br />Iron ND mg/L 0.03 E200.7 12/22/10 18:35 / cp <br />Manganese ND mg/L 0.005 E200.7 12'22/10 18:35 ! cp <br />Molybdenum 0.013 mg/L 0.005 E200-8 12/28/10 01:051 smi <br />Silver ND mg/L 0.00005 E200.8 12/28/10 01:05 / smi <br />Thallium ND mg!L 0.0002 E200.8 12128./10 01:05 ! sml <br />Uranium 0.375 mg/L 0.0002 E200.8 12128110 01:05 ! sml <br />Zinc 0.012 mg/L 0.005 E200.7 12/22/10 18:35 / cp <br />METALS-TOTAL <br />Aluminum NO mg/L 0.2 E200.7 12/22/10 19:07 / cp <br />Antimony NO mg/L 0.001 E200.8 12/28/10 01:121 sml <br />Arsenic ND mg/L 0.0005 E200.8 12/28./10 01:121 smi <br />Boron NO mg/L 0.1 E2003 12/22110 19:071 cp <br />Chromium NO mg/L 0.001 E200.8 12/28110 01:12! sml <br />Copper NO mg1L 0.001 E200.8 12/28/10 01:12 / sml <br />Iron ND mg/L 0.03 E200.7 12/22/10 19:07 ! cp <br />Lead ND mg/L 0.005 E200.8 12/28/10 01:12 i smi <br />Manganese ND mg/L 0.005 E200.7 12122/10 19:07 / cp <br />........._ ..... _.-_ ..... _.. <br />RL - Analyte reporting limit. ..... ... ... .............. ... ..--_.......... ............. . <br />MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. ND - Not detected at the reporting limit . <br />D - RL increased due to sample matrix. <br />Page 10 of 37