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www.eae deb.eom Helena, MT 977-472-0711 • Billings, MT 9BB-131-4455 • Gasper, wT 511111 -vora <br />Aw"Wfraaberar2VA 1852 Gillette, WY 865-666-7175 • Rapid City, SO 888-672-1225 • College Station, TX 888-696-2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/19/11 <br />Project: Schwartz GW 3/24/11 S25646 & S25647 Collection Date: 03/25/11 10:50 <br />Lab ID: C1 1 03081 7-002 DateReceived: 03/28/11 <br />Client Sample ID: MW-6 (S25647) Matrix: Aqueous <br /> MCL/ <br />Analyses Result Units Qualifiers RL QCL Method Analysis Date / By <br /> <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 1820 pCi/L E900.0 04/07/11 13:36 / ep <br />Gross Alpha precision (±) 40.8 pCi/L E900.0 04/07/11 13:36 / ep <br />Gross Alpha MDC 10.2 pCi/L E900.0 04/07/11 13:36 / ep <br />Gross Beta 589 pCi/L E900.0 04/07/11 13:36 / ep <br />Gross Beta precision (±) 17.1 pCi/L E900.0 04/07/11 13:36 / ep <br />Gross Beta MDC 15.5 pCi/L E900.0 04/07/11 13:36 / ep <br />DATA QUALITY <br />A/C Balance (± 5) -1.36 % Calculation 04/07/11 12:37 / kbh <br />Anions 10.0 meq/L Calculation 04/07/11 12:37 / kbh <br />Cations 9.77 meq/L Calculation 04/07/11 12:37 / kbh <br />Solids, Total Dissolved Calculated 611 mg/L Calculation 04/07/11 12:37 / kbh <br />TDS Balance (0.80 - 1.20) 1.07 Calculation 04/07/11 12:37 / kbh <br />FIELD PARAMETERS <br />Conductivity 914 umhos/cm FIELD 03/25/11 10:50 / *** <br />Depth to Water 6.05 feet FIELD 03/25/11 10:50 / *** <br />Flow 0.73 gpm FIELD 03/25/11 10:50 <br />pH 7.53 s.u. FIELD 03/25/1110:50/'** <br />Temperature 6.2 °C FIELD 03/25/11 10:50 <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 <br />Page 6 of 26