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011 I'M www.pwdob.com Helena, MT 877472-0711 • Billings, MT 800-7354489 • Casper, WY 888-235-1515 <br />` "EmbM M'M Gillette, WY 866-686-7175 • Rapid City, SD 886-672-1225 + College Station, Tx 888-660-2218 <br /> LABORATORY ANALYTICAL REPORT <br />Client: Cotter Corporation Report Date: 11/29/10 <br />Project: Schwartzwalder Water Monitor ing Program Collection Date: 10/15/10 10:35 <br />Lab ID: C10100734-003 DateReceived: 10/19/10 <br />Client Sample ID: SW BPL (S25277) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />METALS-TOTAL <br />Molybdenum 0.015 mg/L 0.005 E200.8 11/15/10 18:24 / sml <br />Silver 0.00008 mg/L B 0.00005 E200.8 11/15/10 18:24 / sml <br />Thallium ND mg/L 0.0002 E200.8 11/11/10 22:02 / sml <br />Uranium 0.643 mg/L 0.0002 E200.8 11/11/10 22:02 / sml <br />Zinc 0.007 mg/L 0.005 E200.8 11/11/10 22:02 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 1.3 pCi/L E903.0 10/29/10 14:35 / trs <br />Radium 226 precision (±) 0.28 pCi/L E903.0 10/29/10 14:35 / trs <br />Radium 226 MDC 0.19 pCi/L E903.0 10/29/10 14:35 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 548 pCi/L E900.0 11/18/10 12:16 / ep <br />Gross Alpha precision (±) 13.0 pCi/L E900.0 11/18/10 12:16 / ep <br />Gross Alpha MDC 4.1 pCi/L E900.0 11/18/10 12:16 / ep <br />Gross Beta 190 pCi/L E900.0 11/18/10 12:16 / ep <br />Gross Beta precision (±) 3.8 pCi/L E900.0 11/18/10 12:16 / ep <br />Gross Beta MDC 2.8 pCi/L E900.0 11/18/10 12:16 / ep <br />Radium 226 1.6 pCi/L E903.0 11/08/10 14:04 / trs <br />Radium 226 precision (±) 0.26 pCi/L E903.0 11/08/10 14:04 / trs <br />Radium 226 MDC 0.12 pCi/L E903.0 11/08/10 14:04 / trs <br />Radium 228 0.69 pCi/L U RA-05 11/03/10 12:36 / plj <br />Radium 228 precision (±) 0.65 pCi/L RA-05 11/03/10 12:36 / plj <br />Radium 228 MDC 1.0 pCi/L RA-05 11/03/10 12:36 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -4.71 % Calculation 11/13/10 09:50 / kbh <br />Anions 8.17 meq/L Calculation 11/13/10 09:50 / kbh <br />Cations 7.44 meq/L Calculation 11/13/10 09:50 / kbh <br />Solids, Total Dissolved Calculated 488 mg/L Calculation 11/13/10 09:50 / kbh <br />TDS Balance (0.80 - 1.20) 1.04 Calculation 11/13/10 09:50 / kbh <br />FIELD PARAMETERS <br />Conductivity 780 umhos/cm FIELD 10/15/10 10:35 / <br />pH 7.70 s.u. FIELD 10/15/10 10:35 / *** <br />Temperature 11.6 °C FIELD 10/15/10 10:35 / *** <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 B - The analyte was detected in the method blank. <br />U - Not detected at minimum detectable concentration <br />Page 6 of 29