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www.enerplab.com Helena, WT 871472-0711 • Billings, MT 800-735-4+189 a Casper, WY 888-235-0515 <br />dnab' x[Escauaoea Slav t9s2 Gillette, WY 866-686-7115 Is Rapid City, SD 888-672-1225 • College Station, A 888-690-2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 02/03/11 <br />Project: Schwartz SW 01-05-11 S25539 Collection Date: 01/05/11 09:00 <br />Lab ID: C11010185-001 DateReceived: 01/06/11 <br />Client Sample ID: SW AWD (S25539) 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 01/11!11 14:501 rdw <br />Molybdenum ND mg1L 0.005 E200.8 01/20/1117:12,1 sml <br />Silver ND mg/L 0.00005 E200.8 01/20/11 17:121 sml <br />Thallium ND mg/L 0.0002 E200.8 01120/11 17:12 / sml <br />Uranium 0.0028 mg/L 0.0002 E200.8 01/25/11 19:46 t sml <br />Zinc ND mg/L 0.005 E200.8 01/20/11 17:12 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.07 pCi/L U E903.0 01/17111 12:33 / dmf <br />Radium 226 precision (±) 0.13 pCi/L E903.0 01 /17/11 12:33 /dmf <br />Radium 226 MDC 0.20 pCi/L E903.0 01117!11 12:33 %dmf <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 0.4 pCi/L U E900.0 01115!11 10:40 / ep <br />Gross Alpha precision (±) 1.1 pCi/L E900.0 01/15/11 10:40 / ep <br />Gross Alpha MDC 1.9 pCi/L E900.0 01/15/11 10:401 ep <br />Gross Beta 1.5 pCi/L U E900.0 01/15/11 10:40 ! ep <br />Gross Beta precision (±) 1.5 pCi'L E900.0 01/15/11 10:40 / ep <br />Gross Beta MDC 2.5 pCi/L E900.0 01115/11 10:40 i ep <br />Radium 226 0.11 pCi/L U E903.0 01/24/11 14:46 / dmf <br />Radium 226 precision (±) 0.12 pCi/L E903.0 01/24/11 14:461 dmf <br />Radium 226 MDC 0.17 pCi/L E903.0 01/24/11 14:461 dmf <br />Radium 228 0.28 pCi/L U RA-05 01/19/11 10:56 / plj <br />Radium 228 precision (t) 0.66 pCi/L RA-05 01/19/11 10:561 pij <br />Radium 228 MDC 1.1 pCi/L RA-05 01/19/11 10:56 / plj <br />DATA QUALITY <br />A/C Balance it 5) -4.30 % Calculation 01/24/11 10:27 / kbh <br />Anions 3.16 meq/L Calculation 01/24/11 10:27 / kbh <br />Cations 2.90 meq/L Calculation 01/24/1110:27/ kbh <br />Solids. Total Dissolved Calculated 184 mg,'L Calculation 01/24/11 10:271 kbh <br />TDS Balance (0.80 - 1.20) 0.850 Calculation 01/24/11 10:27 / kbh <br />FIELD PARAMETERS <br />Conductivity 327 umhos/cm FIELD 01/05/11 09:00 / <br />pH 7.45 s.u. FIELD 01/05/1109:00/ <br />Temperature 1.8 `C FIELD 01/05/1109:00/ <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 4 of 24