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ENERGY <br />www- energylab.com r <br />Aaaly icsarcellaws 6rca 1952 J <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 - 698 - 2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 05/11/12 <br />Project: Schwartz SW 4/5/12 S26451- S26458 Collection Date: 04/05/12 10:05 <br />Lab ID: C12040313 -001 DateReceived: 04/07/12 <br />Client Sample ID: SW AWD (S26451) 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 04/12/12 15:12 / clh <br />Molybdenum ND mg /L 0.005 E200.8 04/12/12 18:39 / cp <br />Silver ND mg /L 0.00005 E200.8 04/12/12 18:39 / cp <br />Thallium ND mg /L 0.0002 E200.8 04/12/12 18.39 / cp <br />Uranium 0.0008 mg /L 0.0002 E200.8 04/12/12 18:39 / cp <br />Zinc ND mg /L 0 005 E200.8 04/14/12 05:06 / smm <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.11 pCi /L U E903.0 04/16/12 06:20 /Ibb <br />Radium 226 precision ( ±) 0.14 pCi /L E903.0 04/16/12 06:20 / Ibb <br />Radium 226 MDC 0.21 pCi /L E903.0 04/16/12 0620 / Ibb <br />RADIONUCLIDES - TOTAL <br />Gross Alpha -1 pCi /L U E900 0 04/14/12 13:41 / ep <br />Gross Alpha precision ( ±) 0.8 pCi /L E900.0 04/14/12 13:41 / ep <br />Gross Alpha MDC 1.4 pCi /L E900.0 04/14/12 13:41 / ep <br />Gross Beta 1.3 pCi /L U E900.0 04/14/12 13:41 / ep <br />Gross Beta precision ( ±) 1.5 pCi /L E900.0 04/14/12 13:41 / ep <br />Gross Beta MDC 2.5 pCi /L E900.0 04/14/12 13:41 / ep <br />Radium 226 0.05 pCi /L U E903.0 04/24/12 12:02 / Ibb <br />Radium 226 precision ( ±) 0.09 pCi /L E903.0 04/24/12 12:02 / Ibb <br />Radium 226 MDC 0.14 pCi /L E903.0 04/24/12 12:02 / Ibb <br />Radium 228 -0.2 pCi /L U RA -05 04/17/12 10:56 / plj <br />Radium 228 precision ( ±) 0.83 pCi /L RA -05 04/17/12 10:56 / plj <br />Radium 228 MDC 1.4 pCi /L RA -05 04/17/12 10:56 / plj <br />DATA QUALITY <br />NC Balance (± 5) -0.573 % Calculation 04/18/12 08:00 / kbh <br />Anions 1.87 meq /L Calculation 04/18/12 08:00 / kbh <br />Cations 1.85 meq /L Calculation 04/18/12 08:00 / kbh <br />Solids, Total Dissolved Calculated 116 mg /L Calculation 04/18/12 08:00 / kbh <br />TDS Balance (0.80 - 1.20) 1.16 Calculation 04/18/12 08:00 / kbh <br />FIELD PARAMETERS <br />Field Conductivity 200 umhos /cm FIELD 04/05/12 1005 /*** <br />Field pH 7.88 s.u. FIELD 04/05/12 10:05 /*** <br />Field Temperature, C 2.0 °C FIELD 04/05/12 10:05 / "' <br />"' Performed by Sampler <br />Report <br />Definitions: <br />RL - Analyte reporting limit. <br />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 5 of 42 <br />