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77 4720711 - Billings, hR 100-735-4419 a CaspeWY $08-235-0515 <br />www.cwealipm W'7 <br />A "huff w5,! -Rapid City, So 818-672-1225 - Caliege Station,1X 888-661-2215 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 02/25/11 <br />Project: Schwartz SW 01-25-11 S25523-S25525 & S25568-S25572 Collection Date: 01/25/11 11:00 <br />Lab ID: C1 1 01 0792-002 DateReceived: 01/26/11 <br />Client Sample ID: SW A001 (S25524) Matrix: Aqueous <br />MCL/ <br />Analvses Result Units Qualifiers RL QCL Method Analysis Date / By <br />METALS-TOTAL <br /> ND mg/L 0.0001 E245.1 01/28/11 14:05 / rdw <br />Mercury ND mg/L 0.005 E200.8 02/01/11 11:19 / sml <br />Molybdenum ND mg/L D 0.0002 E200.8 02/01/11 11:19 / sml <br />Silver 0004 <br />0 mg/L 0.0002 E200.8 02/01/11 11:19 / sml <br />Thallium . <br />0085 <br />0 mg/L 0.0002 E200.8 02/24/11 18:37 / sml <br />Uranium . <br />0 <br />006 /L <br />m 0.005 E200.8 02/01/11 11:19 / sml <br />Zinc . g <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 0.06 pCi/L U E903.0 02/14/11 11:06 / jb <br />Radium 226 precision (±) 0.11 pCi/L E903.0 02/14/11 11:06 / jb <br />Radium 226 MDC 0.17 pCi/L E903.0 02/14/11 11:06 / jb <br />RADIONUCLIDES - TOTAL <br />Gross Alpha 3.0 pCi/L E900.0 02/12/11 13:25 / ep <br />Gross Alpha precision (±) 1.1 pCi/L E900.0 02/12/11 13:25 / ep <br />Gross Alpha MDC 1.6 pCi/L E900.0 02/12/11 13:25 / ep <br />Gross Beta 1.7 pCi/L U E900.0 02/12/11 13:25 / ep <br />Gross Beta precision (±) 1.4 pCi/L E900.0 02/12/11 13:25 / ep <br />Gross Beta MDC 2.3 pCi/L E900.0 02/12/11 13:25 / ep <br />Radium 226 0.36 pCi/L E903.0 02/22/11 11:01 / trs <br />Radium 226 precision (±) 0.11 pCi/L E903.0 02/22/11 11:01 / trs <br />Radium 226 MDC 0.1 pCi/L E903.0 02/22/11 11:01 / trs <br />Radium 228 0.66 pCi/L U RA-05 02/15/11 11:11 / plj <br />Radium 228 precision (±) 0.64 pCi/L RA-05 02/15/11 11:11 / plj <br />Radium 228 MDC 1.0 pCi/L RA-05 02/15/11 11:11 / plj <br />DATA QUALITY <br />A/C Balance (± 5) -0.389 % Calculation 02/16/11 12:29 /kbh <br />Anions 2.97 meq/L Calculation 02/16/11 12:29 / kbh <br />Cations 2.94 meq/L Calculation 02/16/11 12:29 / kbh <br />Total Dissolved Calculated <br />Solids 180 mg/L Calculation 02/16/11 12:29 / kbh <br />, <br />TDS Balance (0.80 - 1.20) 0.960 Calculation 02/16/11 12:29 / kbh <br />FIELD PARAMETERS <br />Conductivity <br />308 <br />umhos/cm <br />FIELD <br />01/25/11 11:00 / <br />pH 7 71 s.u. FIELD 01/25/11 11:00 / <br />Temperature 1.1 °C FIELD 01/25/11 11:00 <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 D - RL increased due to sample matrix. <br />U - Not detected at minimum detectable concentration <br />Page 5 of 39