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ENERGY <br />LABORATORIES <br />Report <br />Definitions: <br />www.energylab.com <br />Analytical Excellence Since 1952 <br />RL - Analyte reporting limit. <br />QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />Helena, MT 877 472 - 0711 • Billings, MT 800 735 - 4489 • Casper, WY 888 235 - 0515 <br />Gillette, WY 866 - 686 - 7175 • Rapid City, SD 888 672 - 1225 • College Station, TX 888 690 - 2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 08/31/12 <br />Project: Schwartz GW 7/26/2012 S26523 Collection Date: 07/26/12 13:05 <br />Lab ID: 012071072 - 001 DateReceived: 07/31/12 <br />Client Sample ID: MW -0 (S26523) Matrix: Aqueous <br />MCL/ <br />Analyses Result Units Qualifier RL QCL Method <br />Analysis Date / By <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.03 pCi /L U E903.0 08/20/12 10:39 / Ibb <br />Radium 226 precision ( ±) 0.10 pCi /L E903.0 08/20/12 10:39 / Ibb <br />Radium 226 MDC 0.17 pCi /L E903.0 08/20/12 10:39 / Ibb <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 258 pCi /L E900.0 08/17/12 10:22 / Ibb <br />Gross Alpha precision ( ±) 5.7 pCi /L E900 0 08/17/12 10:22 / Ibb <br />Gross Alpha MDC 1.2 pCi /L E900.0 08/17/12 10:22 / Ibb <br />Gross Beta 72.9 pCi /L E900.0 08/17/12 10:22 / Ibb <br />Gross Beta precision ( ±) 2.6 pCi /L E900.0 08/17/12 10:22 / Ibb <br />Gross Beta MDC 2.4 pCi /L E900.0 08/17/12 10:22 / Ibb <br />DATA QUALITY <br />A/C Balance (± 5) -0.621 % A1030 E 08/23/12 07:33 / kbh <br />Anions 5.29 meq /L A1030 E 08/23/12 07:33 / kbh <br />Cations 5.22 meq /L A1030 E 08/23/12 07:33 / kbh <br />Solids, Total Dissolved Calculated 320 mg /L A1030 E 08/23/12 07:33 / kbh <br />TDS Balance (0.80 - 1.20) 1.04 A1030 E 08/23/12 07:33 / kbh <br />FIELD PARAMETERS <br />Depth to Water 15.1 feet FIELD 07/26/12 1305 / "` <br />Field Conductivity 518 umhos /cm FIELD 07/26/12 13:05 / "' <br />Field pH 6.81 s.u. FIELD 07/26/12 13:05 / "'" <br />Field Temperature, C 12 5 °C FIELD 07/26/12 13:05 / "' <br />Flow 0.30 gpm FIELD 07/26/12 13:05 / "' <br />•" Field data provided by client <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 20 <br />