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www:c+wggiab.cm <br />n &'4N1411472-07111 • Billings, MT 800-735-4419 • Casper, WOOS-235-0515 <br />: <br /> <br />A?1calExse9serySke?lBbt yt <br />t <br />66?jYd,6?7056, Rapid C <br />ity; SD 816-612-1225 • College Station, Tx 688=686-2216 <br /> LABORATORY ANALYTICAL REPORT <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/15/11 <br />Project: Schwartz-SW 03/16/11 S25593-25600 Collection Date: 03/16/11 13:00 <br />Lab ID: C11030585-006 DateReceived: 03/18/11 <br />Client Sample ID: SW BOS (S25598) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifier RL QCL Method Analysis Date / By <br />METALS - TOTAL <br />Mercury ND mg/L 0.0001 E245.1 03/22/11 10:59 / rdw <br />Molybdenum ND mg/L 0.005 E200.8 03/30/11 19:02 / sml <br />Silver ND mg/L 0.00005 E200.8 03/30/11 19:02 / sml <br />Thallium ND mg/L 0.0002 E200.8 03/29/11 01:46 / sml <br />Uranium 0.157 mg/L 0.0002 E200.8 03/30/11 19:02 / sml <br />Zinc ND mg/L 0.005 E200.8 03/29/11 01:46 / sml <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.35 pCi/L E903.0 03/29/11 02:11 / trs <br />Radium 226 precision (±) 0.17 pCi/L E903.0 03/29/11 02:11 / trs <br />Radium 226 MDC 0.18 pCi/L E903.0 03/29/11 02:11 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 93.9 pCi/L E900.0 03/24/11 00:18 / ep <br />Gross Alpha precision (±) 3.7 pCi/L E900.0 03/24/11 00:18 / ep <br />Gross Alpha MDC 1.7 pCi/L E900.0 03/24/11 00:18 / ep <br />Gross Beta 25.4 pCi/L E900.0 03/24/11 00:18 / ep <br />Gross Beta precision (±) 1.9 pCi/L E900.0 03/24/11 00:18 / ep <br />Gross Beta MDC 2.5 pCi/L E900.0 03/24/11 00:18 / ep <br />Radium 226 0.32 pCi/L E903.0 04/04/11 16:43 / trs <br />Radium 226 precision (±) 0.12 pCi/L E903.0 04/04/11 16:43 / trs <br />Radium 226 MDC 0.12 pCi/L E903.0 04/04/11 16:43 / trs <br />Radium 228 0.02 pCi/L U RA-05 03/29/11 17:16 / plj <br />Radium 228 precision (±) 0.80 pCi/L RA-05 03/29/11 17:16 / pij <br />Radium 228 MDC 1.3 pCi/L RA-05 03/29/11 17:16 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -2.86 % Calculation 04/07/11 10:33 / kbh <br />Anions 3.18 meq/L Calculation 04/07/11 10:33 / kbh <br />Cations 3.00 meq/L Calculation 04/07/11 10:33 / kbh <br />Solids, Total Dissolved Calculated 188 mg/L Calculation 04/07/11 10:33 / kbh <br />TDS Balance (0.80 - 1.20) 0.960 Calculation 04/07/11 10:33 / kbh <br />FIELD PARAMETERS <br />Conductivity 327 umhos/cm FIELD 03/16/11 13:00 / *** <br />pH 7.22 s.u. FIELD 03/16/11 13:00 / *** <br />* <br />Temperature 5.8 °C FIELD * <br />03/16/11 13:00 / * <br />*** Performed by Sampler <br /> <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 U - Not detected at minimum detectable concentration <br />Page 9 of 39