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www. mmileb=m el.?y a W(877-47Y-0711 • Billings, MT 900-735-"89 • Casper, WY 88&235-1513 <br />.?86 7175 • Rapid Ctp, SO 118-671-1225 • College Station, TX 88e410-221 <br />A#*da/FuaNrwSMw'1 t <br />K - - <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/08/11 <br />Project: Schwartz SW 03/08/11 S25677-S25684 Collection Date: 03/08/11 11:35 <br />Lab ID: C11030280-005 DateReceived: 03/09/11 <br />Client Sample ID: SW OS (S25681) Matrix: Aqueous <br /> <br />Analyses <br />Result <br />Units MCL/ <br />Qualifiers RL QCL Method <br />Analysis Date / By <br />METALS - TOTAL <br />Mercury ND mg/L 0.0001 E245.1 03/14/11 16:32 / rdw <br />Molybdenum ND mg/L 0.005 E200.8 03/16/11 19:31 / sml <br />Silver ND mg/L 0.00005 E200.8 03/16/11 19:31 / sml <br />Thallium ND mg/L 0.0002 E200.8 03/16/11 19:31 / sml <br />Uranium 0.0174 mg/L 0.0002 E200.8 03/16/11 19:31 / sml <br />Zinc ND mg/L 0.005 E200.8 03/16/11 19:31 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.36 pCi/L E903.0 03/21/11 17:17 / trs <br />Radium 226 precision (±) 0.16 pCi/L E903.0 03/21/11 17:17 / trs <br />Radium 226 MDC 0.17 pCi/L E903.0 03/21/11 17:17 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 13.0 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Alpha precision (±) 1.9 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Alpha MDC 1.9 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Beta 3.5 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Beta precision (±) 1.7 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Beta MDC 2.7 pCi/L E900.0 03/18/11 00:14 / ep <br />Radium 226 0.06 pCi/L U E903.0 03/27/11 13:34 / trs <br />Radium 226 precision (±) 0.10 pCi/L E903.0 03/27/11 13:34 / trs <br />Radium 226 MDC 0.16 pCi/L E903.0 03/27/11 13:34 / trs <br />Radium 228 0.63 pCi/L U RA-05 03/21/11 12:58 / plj <br />Radium 228 precision (±) 0.71 pCi/L RA-05 03/21/11 12:58 / plj <br />Radium 228 MDC 1.1 pCi/L RA-05 03/21/11 12:58 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -4.58 % Calculation 03/16/11 15:44 / kbh <br />Anions 3.02 meq/L Calculation 03/16/11 15:44 / kbh <br />Cations 2.75 meq/L Calculation 03/16/11 15:44 / kbh <br />Solids, Total Dissolved Calculated 175 mg/L Calculation 03/16/11 15:44 / kbh <br />TDS Balance (0.80 - 1.20) 1.06 Calculation 03/16/11 15:44 / kbh <br />FIELD PARAMETERS <br />Conductivity 304 umhos/cm FIELD 03/08/11 11:35 / <br />pH 7.56 s.u. FIELD 03/08/11 11:35 <br />Temperature 1.7 °C FIELD 03/08/11 11:35 <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 concentrati on U - Not detected at minimum detectable concentration <br />Page 8 of 36