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wwrw.enerdab.com Helena, MT 877.472-0711 • Billings, MT 800-735.4489 , Casper, WY 888-235-0515 <br />. - . - 0 A0,10e21 fxcsftxf 9= IM Gillette, wy 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-880-2218 <br />WM Z1 1 a ' <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 09/27/10 <br />Project: Schwartzwalder Mine Collection Dat e: 08/25/10 09:05 <br />Lab ID: C10080962-005 DateReceived: 08/26/10 <br />Client Sample ID: SW-OS (S25181) Matri x: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />MAJOR IONS <br />Alkalinity, Total as CaC03 86 mg/L 1 A2320 B 08/28/10 01:48 / ja <br />Bicarbonate as HC03 105 mg/L 1 A2320 B 08/28/10 01:48 / ja <br />Calcium 34.3 mg/L 0.1 E200.8 09/13/10 14:15 / eli-h <br />Chloride 48 mg/L 3 E300.0 09/03/10 22:05 / Ijl <br />Fluoride 0.3 mg/L 0.1 A4500-F C 08/30/10 12:40 / ja <br />Magnesium 9.9 mg/L 0.1 E200.8 09/13/10 14:15 / eli-h <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.1 E353.2 09/08/10 09:01 / eli-b <br />Phosphate, Total 0.04 mg/L 0.01 Calculation 09/13/10 11:54 / sec <br />Phosphorus, Total as P 0.01 mg/L 0.01 E365.1 09/03/10 14:08 / eli-b <br />Potassium 2.0 mg/L 0.1 E200.8 09/13/10 14:15 / eli-h <br />Sodium 14.6 mg/L D 0.5 E200.7 09/07/10 18:38 / eli-h <br />Sulfate 12 mg/L 5 E300.0 09/03/10 22:05 / Ijl <br />NON-METALS <br />Cyanide, Weak Acid Dissociable ND mg/L 0.005 D2036 09/01/10 13:54 / eli-b <br />PHYSICAL PROPERTIES <br />Solids, Total Dissolved TDS @ 180 C 211 mg/L 10 A2540 C 08/30/10 10:11 / Ir <br />Solids, Total Suspended TSS @ 105 C ND mg/L 4 A2540 D 08/30/10 10:55 / Ir <br />METALS - DISSOLVED <br />Aluminum ND mg/L 0.2 E200.8 09/10/10 20:47 / eli-h <br />Antimony ND mg/L 0.001 E200.8 09/10/10 20:47 / eli-h <br />Copper ND mg/L 0.005 E200.8 09/10/10 20:47 / eli-h <br />Iron 0.06 mg/L 0.03 E200.8 09/13/10 14:15 / eli-h <br />Manganese 0.01 mg/L 0.01 E200.8 09/10/10 20:47 / eli-h <br />Molybdenum ND mg/L 0.005 E200.8 09/10/10 20:47 / eli-h <br />Silver ND mg/L 0.001 E200.8 09/13/10 14:15 / eli-h <br />Thallium ND mg/L 0.001 E200.8 09/10/10 20:47 / eli-h <br />Uranium 0.0055 mg/L 0.0002 E200.8 09/10/10 20:47 / eli-h <br />Zinc ND mg/L 0.005 E200.8 09/10/10 20:47 / eli-h <br />METALS-TOTAL <br />Aluminum ND mg/L 0.2 E200.7 09/01/10 20:58 / rdw <br />Antimony ND mg/L 0.001 E200.8 09/07/10 13:26 / sml <br />Arsenic ND mg/L 0.1 E200.8 09/07/10 13:26 / sml <br />Boron ND mg/L 0.1 E200.8 09/01/10 09:24 / sml <br />Chromium ND mg/L 0.1 E200.8 09/07/10 13:26 / sml <br />Copper ND mg/L 0.005 E200.8 09/07/10 13:26 / sml <br />Iron 0.20 mg/L 0.03 E200.8 09/01/10 09:24 / sml <br />Lead ND mg/L 0.005 E200.8 09/07/10 13:26 / sml <br />Manganese 0.02 mg/L 0.01 E200.7 09/01/10 20:58 / rdw <br />Mercury ND mg/L 0.0001 E245.1 08/30/10 10:36 / rdw <br />Report RL - Analyte reporting limit. 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 9 of 44