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• wtinY.energyiab.com <br />- 61:7'472 0711 • Billings, MT 100-135-4419 • Caspar, W1888-235-0515 <br /> A ,FxcNt eaesau 102 k15 Rap 1 Crly"SD 81/ 6T2-1225 • College Station, Tx 888=690-2218. <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/01/11 <br />Project: Schwartz SW 03/01/11 S25651-S25658 Collection Date: 03/01/11 14:35 <br />Lab ID: C11030134-008 DateReceived: 03/03/11 <br />Client Sample ID: SW BPL (S25658) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />METALS-TOTAL <br />Mercury ND mg/L 0.0001 E245.1 03/14/11 16:09 / rdw <br />Molybdenum 0.011 mg/L 0.005 E200.8 03/30/11 17:39 / sml <br />Silver ND mg/L D 0.0002 E200.8 03/30/11 17:39 / sml <br />Thallium ND mg/L 0.0002 E200.8 03/24/11 03:29 / sml <br />Uranium 0.229 mg/L 0.0002 E200.8 03/30/11 17:39 / sml <br />Zinc 0.013 mg/L 0.005 E200.8 03/29/11 00:31 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.50 pCi/L E903.0 03/14/11 15:34 / trs <br />Radium 226 precision (±) 0.20 pCi/L E903.0 03/14/11 15:34 / trs <br />Radium 226 MDC 0.21 pCi/L E903.0 03/14/11 15:34 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 212 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Alpha precision (±) 6.6 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Alpha MDC 2.2 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Beta 62.2 pCi/L E900.0 03/18/11 00:14 / ep <br />Gross Beta precision (±) 2.5 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 0.52 pCi/L E903.0 03/21/11 15:10 / trs <br />Radium 226 precision (±) 0.15 pCi/L E903.0 03/21/11 15:10 / trs <br />Radium 226 MDC 0.12 pCi/L E903.0 03/21/11 15:10 / trs <br />Radium 228 0.33 pCi/L U RA-05 03/16/11 12:21 / plj <br />Radium 228 precision (±) 0.70 pCi/L RA-05 03/16/11 12:21 / plj <br />Radium 228 MDC 1.2 pCi/L RA-05 03/16/11 12:21 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -2.47 % Calculation 03/16/11 15:03 / kbh <br />Anions 4.77 meq/L Calculation 03/16/11 15:03 / kbh <br />Cations 4.54 meq/L Calculation 03/16/11 15:03 / kbh <br />Solids, Total Dissolved Calculated 285 mg/L Calculation 03/16/11 15:03 / kbh <br />TDS Balance (0.80 - 1.20) 1.02 Calculation 03/16/11 15:03 / kbh <br />FIELD PARAMETERS <br />Conductivity 479 umhos/cm FIELD 03/01/1114:35/- <br />pH 7.64 s.u. FIELD 03/01/11 14:35 / - <br />Temperature 5.1 °C FIELD 03/01/1114:35/- <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 D - RL increased due to sample matrix. <br />U - Not detected at minimum detectable concentration <br />Page 13 of 43