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?' vrvrwane?tlab.wm 1' *le:>"`14T-877 412-0711 • Billings, MT 800-735-4419* Casper,WY8d8-235-1515 <br />A fps 9Mnasirea fiit 665y ' 7175 - Rapid City, so 818-672-1225 • College station, Tf(868-6a0-2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 03/21 A 1 <br />Project: Schwartz SW 2/17/11 S25626-S25633 Collection Date: 02/15/11 14:50 <br />Lab ID: C11020554-003 DateReceived: 02/18/11 <br />Client Sample ID: SW BDIS (S25628) 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 02/23/11 11:45 / rdw <br />Molybdenum ND mg/L 0.005 E200.8 03/02/11 04:17 / sml <br />Silver ND mg/L 0.00005 E200.8 03/02/11 04:17 / sml <br />Thallium ND mg/L 0.0002 E200.8 02/28/11 16:47 / sml <br />Uranium 0.0073 mg/L 0.0002 E200.8 02/28/11 16:47 / sml <br />Zinc ND mg/L 0.005 E200.8 03/02/11 04:17 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.16 pCi/L E903.0 03/01/11 16:37 / trs <br />Radium 226 precision (±) 0.11 pCi/L E903.0 03/01/11 16:37 / trs <br />Radium 226 MDC 0.14 pCi/L E903.0 03/01/11 16:37 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 6.4 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Alpha precision (±) 1.5 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Alpha MDC 1.8 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Beta 4.4 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Beta precision (±) 1.6 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Beta MDC 2.5 pCi/L E900.0 03/02/11 10:54 / ep <br />Radium 226 0.08 pCi/L U E903.0 03/14/11 13:39 / dmf <br />Radium 226 precision (±) 0.11 pCi/L E903.0 03/14/11 13:39 / dmf <br />Radium 226 MDC 0.18 pCi/L E903.0 03/14/11 13:39 / dmf <br />Radium 228 0.41 pCi/L U RA-05 03/07/11 13:28 / plj <br />Radium 228 precision (±) 0.65 pCi/L RA-05 03/07/11 13:28 / plj <br />Radium 228 MDC 1.1 pCi/L RA-05 03/07/11 13:28 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -6.18 % Calculation 03/16/11 13:41 / kbh <br />Anions 2.78 meq/L Calculation 03/16/11 13:41 / kbh <br />Cations 2.46 meq/L Calculation 03/16/11 13:41 / kbh <br />Solids, Total Dissolved Calculated 160 mg/L Calculation 03/16/11 13:41 / kbh <br />TDS Balance (0.80 - 1.20) 0.860 Calculation 03/16/11 13:41 / kbh <br />- The ion balance is not appropriate for samples having a conductivity less than 300 umhos/cm. <br />FIELD PARAMETERS <br />Conductivity 283 umhos/cm FIELD 02/15/11 14:50 / <br />pH 7.71 s. u. FIELD 02/15/11 14:50 / <br />Temperature 2.9 °C FIELD 02/15/11 14:50/*** <br />*** Performed by Sampler <br />Report RL - Analyte reporting limit. <br />Definitions: 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 6 of 39