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wwwtoeWab.com Helena, MT 877-472-0711 • Billings, MT 888-735-4489 • Casper, WY 880-235-9515 <br />2VA 119 60letfe, WY 866-686-7175 • Rapid City, Sp 888-672-1229 • College Station, TX 888-6110-2218 <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation <br />Project: Schwartzwalder Water Monitoring Program <br />Lab ID: C10080538-001 <br />Client Sample ID: SW-LLHG (S25360) <br />Report Date: 09/14/10 <br />Collection Date: 08/11/10 10:30 <br />Date Re ce ived : 08/13/10 <br />Matrix: Surface Water <br />MCU <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />METALS-TOTAL <br />Molybdenum <br />Silver <br />Thallium <br />Uranium <br />Zinc <br />0.006 mg/L 0.005 E200.8 08/20/10 08:07 / sml <br />ND mg/L 0.001 E200.8 08/20/10 08:07 / sml <br />ND mg/L 0.001 E200.8 08/20/10 08:07 / sml <br />0.264 mg/L 0.0002 E200.8 08/20/10 08:07 / sml <br />0.005 mg/L 0.005 E200.8 08/20/10 08:07 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.49 pCi/L <br />Radium 226 precision (±) 0.17 pCi/L <br />Radium 226 MDC 0.17 pCi/L <br />RADIONUCLIDES - TOTAL <br />E903.0 08/28/10 11:44 / trs <br />E903.0 08/28/10 11:44 / trs <br />E903.0 08/28/10 11:44 / trs <br />Gross Alpha 214 pCi/L E900.0 08/28/10 20:42 / ep <br />Gross Alpha precision (±) 6.6 pCi/L E900.0 08/28/10 20:42 / ep <br />Gross Alpha MDC 2.0 pCi/L E900.0 08/28/10 20:42 / ep <br />Gross Beta 57.8 pCi/L E900.0 08/28/10 20:42 / ep <br />Gross Beta precision (±) 2.4 pCi/L E900.0 08/28/10 20:42 / ep <br />Gross Beta MDC 2.6 pCi/L E900.0 08/28/10 20:42 / ep <br />Radium 226 0.20 pCi/L E903.0 09/08/10 09:30 / trs <br />Radium 226 precision (±) 0.13 pCi/L E903.0 09/08/10 09:30 / trs <br />Radium 226 MDC 0.17 pCi/L E903.0 09/08/10 09:30 / trs <br />Radium 228 0.19 pCi/L U RA-05 09/01/10 17:37 / plj <br />Radium 228 precision (±) 0.81 pCi/L RA-05 09/01/10 17:37 / plj <br />Radium 228 MDC 1.3 pCi/L RA-05 09/01/10 17:37 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -3.23 % Calculation 08/26/10 08:34 / kbh <br />Anions 4.23 meq/L Calculation 08/26/10 08:34 / kbh <br />Cations 3.96 meq/L Calculation 08/26/10 08:34 / kbh <br />Solids, Total Dissolved Calculated 249 mg/L Calculation 08/26/10 08:34 / kbh <br />TDS Balance (0.80 - 1.20) 1.00 Calculation 08/26/1008:34 / kbh <br />FIELD PARAMETERS <br />Conductivity 420 umhos/cm FIELD 08/11/10 10:30 <br />pH 8.10 s.u. FIELD 08/11/10 10:30 <br />Temperature 16.6 'C FIELD 08/11/10 10:30 <br />*** Performed by Sampler <br /> <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 concentrati on U - Not detected at minimum detectable concentration <br />Page 4 of 31