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• www.energylab.com Helena, MT 877-472-0711 * Billings, MT 808-735-4489 * Casper, WY 888-235-0515 <br />Gillette, WY 866-666-7175 • Rapid City, SD 888-672-1225 * College Station, TX 888-690-2218 <br />LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 09/16/10 <br />Project: Schwartzwalder Water Monitoring Program Collection Date: 08/17/10 13:00 <br />Lab ID: C10080658-001 DateReceived: 08/18/10 <br />Client Sample ID: SW-AWD (S25452) Matrix: Aqueous <br /> <br />Analyses <br />Result <br />Units <br />Qualifiers RL MCL/ <br />QCL Method <br />Analysis Date / By <br />METALS-TOTAL <br />Molybdenum ND mg/L 0.005 E200.8 08/26/10 18:21 / sml <br />Silver ND mg/L 0.001 E200.8 08/26/10 18:21 / sml <br />Thallium ND mg/L 0.001 E200.8 08/26/10 18:21 / sml <br />Uranium 0.0016 mg/L 0.0002 E200.8 08/26/10 18:21 / sml <br />Zinc ND mg/L 0.005 E200.8 08/26/10 18:21 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.25 pCi/L <br />Radium 226 precision (±) 0.13 pCi/L <br />Radium 226 MDC 0.14 pCi/L <br />RADIONUCLIDES - TOTAL <br />E903.0 08/30/10 12:08 / dmf <br />E903.0 08/30/10 12:08 / dmf <br />E903.0 08/30/10 12:08 / dmf <br />Gross Alpha 6.0 pCi/L E900.0 08/25/10 12:32 / ep <br />Gross Alpha precision (±) 1.6 pCi/L E900.0 08/25/10 12:32 / ep <br />Gross Alpha MDC 2.0 pCi/L E900.0 08/25/10 12:32 / ep <br />Gross Beta 4.7 pCi/L E900.0 08/25/10 12:32 / ep <br />Gross Beta precision (±) 1.6 pCi/L E900.0 08/25/10 12:32 / ep <br />Gross Beta MDC 2.5 pCi/L E900.0 08/25/10 12:32 / ep <br />Radium 226 -0.07 pCi/L U E903.0 09/08/10 12:11 / trs <br />Radium 226 precision (±) 0.11 pCi/L E903.0 09/08/10 12:11 / trs <br />Radium 226 MDC 0.22 pCi/L E903.0 09/08/10 12:11 / trs <br />Radium 228 0.0 pCi/L U RA-05 09/02/10 14:13 / plj <br />Radium 228 precision (±) 0.88 pCi/L RA-05 09/02/10 14:13 / plj <br />Radium 228 MDC 1.5 pCi/L RA-05 09/02/10 14:13 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -1.57 % Calculation 08/31/10 08:26 / kbh <br />Anions 3.06 meq/L Calculation 08/31/10 08:26 / kbh <br />Cations 2.96 meq/L Calculation 08/31/10 08:26 / kbh <br />Solids, Total Dissolved Calculated 179 mg/L Calculation 08/31/10 08:26 / kbh <br />TDS Balance (0.80 - 1.20) 1.18 Calculation 08/31/10 08:26 / kbh <br />FIELD PARAMETERS <br />Conductivity 310 umhos/cm FIELD 08/17/10 13:00 / - <br />pH 7.79 s.u. FIELD 08/17/10 13:00 / - <br />Temperature 17.1 °C FIELD 08/17/10 13:00 / - <br />'•• Performed by Sampler <br />Report <br />Definitions: <br />RL - Analyte reporting limit. <br />QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 4 of 25