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\ www emrgylab.can Helena, MT 677472-0711 • Billings, MT 800-7354488 • Casper, WY 888-235-8515 <br />• AMOWEaallsurSlbc. 189 <br />J Gillette, WY 866-686-7175 » Rapid City, SD 886-672-1215 • College Station, TX 888-680-2218 <br /> LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 11/22/10 <br />Project: Schwartzwalder Water Monitori ng Program SW Collection Date: 10/13/10 09:10 <br />Lab ID: C10100592-002 DateReceived: 10/14/10 <br />Client Sample ID: SW A001 (S25271) Mat rix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />METALS-TOTAL <br />Molybdenum ND mg/L 0.005 E200.8 11/02/10 00:43 / smI <br />Silver ND mg/L D 0.0002 E200.8 11/02/10 00:43 / sml <br />Thallium ND mg/L 0.0002 E200.8 11/02/10 00:43 / smI <br />Uranium 0.0141 mg/L 0.0002 E200.8 11/02/10 00:43 / sml <br />Zinc ND mg/L 0.005 E200.8 11/02/10 00:43 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 -0.1 pCi/L U E903.0 10/27/10 14:56 / trs <br />Radium 226 precision (±) 0.1 pCi/L E903.0 10/27/10 14:56 / trs <br />Radium 226 MDC 0.23 pCi/L E903.0 10/27/10 14:56 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 7.9 pCi/L E900.0 11/09/10 03:49 / ep <br />Gross Alpha precision (±) 1.9 pCi/L E900.0 11/09/10 03:49 / ep <br />Gross Alpha MDC 2.6 pCi/L E900.0 11/09/10 03:49 / ep <br />Gross Beta 8.0 pCi/L E900.0 11/09/10 03:49 / ep <br />Gross Beta precision (±) 1.6 pCi/L E900.0 11/09/10 03:49 / ep <br />Gross Beta MDC 2.4 pCi/L E900.0 11/09/10 03:49 / ep <br />Radium 226 0.35 pCi/L E903.0 11/09/10 00:21 / jb <br />Radium 226 precision (±) 0.11 pCi/L E903.0 11/09/10 00:21 /jb <br />Radium 226 MDC 0.09 pCi/L E903.0 11/09/10 00:21 / jb <br />Radium 228 0.37 pCi/L U RA-05 11/03/10 10:16 / jb <br />Radium 228 precision (±) 0.93 pCi/L RA-05 11/03/10 10:16 / jb <br />Radium 228 MDC 1.5 pCi/L RA-05 11/03/10 10:16 / jb <br />DATA QUALITY <br />A/C Balance (± 5) -0.858 % Calculation 11/12/10 10:14 / kbh <br />Anions 3.80 meq/L Calculation 11/12/10 10:14 / kbh <br />Cations 3.74 meq/L Calculation 11/12/10 10:14 / kbh <br />Solids, Total Dissolved Calculated 220 mg/L Calculation 11/12/10 10:14 / kbh <br />TDS Balance (0.80 - 1.20) 1.02 Calculation 11/12/10 10:14 / kbh <br />FIELD PARAMETERS <br />Conductivity 377 umhos/cm FIELD 10/13/10 09:10 / <br />pH 7.70 s.u. FIELD 10/13/1009:10/'** <br />Temperature 7.8 °C FIELD 10/13/10 09:10 / <br />'" Performed by Sampler <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />D - RL increased due to sample matrix. <br />Page 6 of 36