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wwwznergylab.COM Helena, MT B77-472-0711 • Billings, MT 800-735-4489 * Casper, WY 888-235-0515 <br />Ansgalfxcadsnc Ww 1952 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation <br />Project: Schwartzwalder Mine <br />Lab ID: C10080962-003 <br />Client Sample ID: SW-BDIS (S25179) <br /> <br />Analyses <br /> <br /> <br /> <br /> <br />esult <br /> <br /> <br /> <br /> <br />nits Report Date: 09/27/10 <br />Collection Date: 08/24/10 14:10 <br />DateReceived: 08/26/10 <br />Matrix: Aqueous <br />MCU <br />Qualifiers RL QCL Method Analysis Date! By <br />METALS-TOTAL <br />Molybdenum ND mg/L 0.005 E200.8 09/08/10 03:55 / s m I <br />Silver ND mg/L 0.001 E200.8 09/08/10 03:55 / sml <br />Thallium ND mg/L 0.001 E200.8 09/03/10 01:09 / sml <br />Uranium 0.0058 mg/L 0.0002 E200.8 09/03/10 01:09 / sml <br />Zinc 0.005 mg/L 0.005 E200.8 09/03/10 01:09 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 -0.09 pCi/L U E903.0 09/20/10 10:34 / trs <br />Radium 226 precision (±) 0.11 pCi/L E903.0 09/20/10 10:34 / trs <br />Radium 226 MDC 0.23 pCi/L E903.0 09/20/10 10:34! trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 4.7 pCi/L E900.0 09/10/10 03:35 / ep <br />Gross Alpha precision (±) 1.3 pCi/L E900.0 09/10/10 03:35 / ep <br />Gross Alpha MDC 1.7 pCi/L E900.0 09/10/10 03:35 / ep <br />Gross Beta 2.0 pCi/L U E900.0 09/10/10 03:35 / ep <br />Gross Beta precision (±) 1.5 pCi/L E900.0 09/10/10 03:35 / ep <br />Gross Beta MDC 2.5 pCi/L E900.0 09/10/10 03:35 / ep <br />Radium 226 -0.07 pCi/L U E903.0 09/20/10 12:11 / trs <br />Radium 226 precision (±) 0.08 pCi/L E903.0 09/20/10 12:11 / trs <br />Radium 226 MDC 0.18 pCi/L E903.0 09/20/10 12:11 / trs <br />Radium 228 0.87 pCi/L U RA-05 09/13/10 11:42 / plj <br />Radium 228 precision (±) 0.78 pCi/L RA-05 09/13/10 11:42 / plj <br />Radium 228 MDC 1.2 pCi/L RA-05 09/13/10 11:42 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -2.63 % Calculation 09/27/10 16:23 / kbh <br />Anions 3.37 meq/L Calculation 09/27/10 16:23 / kbh <br />Cations 3.20 meq/L Calculation 09/27/10 16:23 / kbh <br />Solids, Total Dissolved Calculated 199 mg/L Calculation 09/27/10 16:23 / kbh <br />TDS Balance (0.80 - 1.20) 1.03 Calculation 09/27/10 16:23 / kbh <br />FIELD PARAMETERS <br />Conductivity 323 umhos/cm FIELD 08/24/10 14:10 / <br />pH 7.98 s. u. FIELD 08/24/10 14:10 / <br />Temperature 15.3 °C FIELD 08/24/10 14:10 / <br />Performed by Sampler <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 U - Not detected at minimum detectable concentration <br />Page 6 of 44