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www-cweWabnoi 4 Helena, MT-877-472-0711 *Billings, Alf 880.735.4489 • Casper, WY 888-235-9515 <br />+ fit ; f C?iltetta,.WY. E66 .i86-7175 • Rapid City, SD 868.812-1225• College Station, TX 888430-2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 02-10-11 S25580-S25582 <br />Lab ID: C11020376-002 <br />Client Sample ID: SW ARH (S25581) <br />Report Date: 03/15/11 <br />Collection Date: 02/10/11 09:20 <br />DateReceived: 02/11 /11 <br />Matrix: Aqueous <br />MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br />METALS - TOTAL <br />Mercury <br />Molybdenum <br />Silver <br />Thallium <br />Uranium <br />Zinc <br />ND mg/L 0.0001 E245.1 02/17/11 13:28 / rdw <br />0.022 mg/L 0.005 E200.8 02/24/11 19:32 / sml <br />ND mg/L L 0.0002 E200.8 02/24/11 19:32 / sml <br />ND mg/L 0.0002 E200.8 02/24/11 19:32 / sml <br />0.510 mg/L 0.0002 E200.8 02/24/11 19:32 / sml <br />0.021 mg/L 0.005 E200.8 02/24/11 19:32 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.61 pCi/L <br />Radium 226 precision (±) 0.15 pCi/L <br />Radium 226 MDC 0.12 pCi/L <br />RADIONUCLIDES - TOTAL <br />E903.0 02/28/11 15:25 / trs <br />E903.0 02/28/11 15:25 / trs <br />E903.0 02/28/11 15:25 / trs <br />Gross Alpha 408 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Alpha precision (±) 9.9 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Alpha MDC 2.6 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Beta 109 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Beta precision (±) 3.0 pCi/L E900.0 03/02/11 10:54 / ep <br />Gross Beta MDC 2.6 pCi/L E900.0 03/02/11 10:54 / ep <br />Radium 226 0.53 pCi/L E903.0 03/14/11 10:29 / trs <br />Radium 226 precision (±) 0.21 pCi/L E903.0 03/14/11 10:29 / trs <br />Radium 226 MDC 0.21 pCi/L E903.0 03/14/11 10:29 / trs <br />Radium 228 2.3 pCi/L RA-05 03/07/11 11:23 / plj <br />Radium 228 precision (±) 1.1 pCi/L RA-05 03/07/11 11:23 / plj <br />Radium 228 MDC 1.7 pCi/L RA-05 03/07/11 11:23 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -0.0965 % Calculation 03/14/11 08:40 / kbh <br />Anions 6.49 meq/L Calculation 03/14/11 08:40 / kbh <br />Cations 6.47 meq/L Calculation 03/14/11 08:40 / kbh <br />Solids, Total Dissolved Calculated 393 mg/L Calculation 03/14/11 08:40 / kbh <br />TDS Balance (0.80 - 1.20) 1.05 Calculation 03/14/11 08:40 / kbh <br />FIELD PARAMETERS <br />Conductivity 635 umhos/cm FIELD 02/10/11 09:20 / <br />pH 7.84 s.u. FIELD 02/10/11 09:20 <br />Temperature 1.7 °C FIELD 02/10/11 09:20 <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 />L - Lowest available reporting limit for the analytical methoc <br />used. <br />Page 5 of 29