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www.erterdab.com � Helena, NT 877 - 472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888 - 235 -0513 <br />=2w# fiMZ Gillette, WY 866- 686 -7175 • Rapid City, SD 886 - 672 -1225 • College Station, Tx B86-680 -2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />06/19/13 <br />Project: <br />Schwartz GW 5/23/2013 S26999 & S27000 <br />Collection Date: <br />05/23/13 13:50 <br />Lab ID: <br />C13050906 -002 <br />DateReceived: <br />05/24/13 <br />Client Sample ID: <br />MW -1 (S27000) <br />Matrix: <br />Aqueous <br />0.11 <br />pCi /L <br />MCL/ <br />06/05/13 19:22 / Imc <br />Analyses <br />Result Units Qualifiers RL <br />QCL Method Analysis Date / By <br />RADIONUCLIDES - DISSOLVED <br />0.458 <br />% <br />A1030 E <br />06/13/13 14:26 / kbh <br />Radium 226 <br />0.41 <br />pCi /L <br />E903.0 <br />06/05/13 19:22 / Imc <br />Radium 226 precision ( ±) <br />0.11 <br />pCi /L <br />E903.0 <br />06/05/13 19:22 / Imc <br />Radium 226 MDC <br />0.11 <br />pCi /L <br />E903.0 <br />06/05/13 19:22 / Imc <br />RADIONUCLIDES - TOTAL <br />1.00 <br />A1030 E <br />06/13/13 14:26 / kbh <br />Gross Alpha <br />164 <br />pCi /L <br />E900.0 <br />06/12/13 17:00 / Ibb <br />Gross Alpha precision ( ±) <br />4.2 <br />pCi /L <br />E900.0 <br />06/12/13 17:00 / Ibb <br />Gross Alpha MDC <br />1.8 <br />pCi /L <br />E900.0 <br />06/12/13 17:00 / Ibb <br />Gross Beta <br />40.8 <br />pCi /L <br />E900.0 <br />06/12/13 17:00 / Ibb <br />Gross Beta precision ( ±) <br />2.3 <br />pCi /L <br />E900.0 <br />06/12/13 17:00 / Ibb <br />Gross Beta MDC <br />2.5 <br />pCi /L <br />E900.0 <br />06/12/13 17:00 / Ibb <br />DATA QUALITY <br />A/C Balance (± 5) <br />0.458 <br />% <br />A1030 E <br />06/13/13 14:26 / kbh <br />Anions <br />4.23 <br />meq /L <br />A1030 E <br />06/13/13 14:26 / kbh <br />Cations <br />4.27 <br />meq /L <br />A1030 E <br />06/13/13 14:26 / kbh <br />Solids, Total Dissolved Calculated <br />260 <br />mg /L <br />A1030 E <br />06/13/13 14:26 / kbh <br />TDS Balance (0.80 - 1.20) <br />1.00 <br />A1030 E <br />06/13/13 14:26 / kbh <br />FIELD PARAMETERS <br />Depth to Water <br />11.4 <br />feet <br />FIELD <br />05/23/13 13:50 / <br />Field Conductivity <br />424 <br />umhos /cm <br />FIELD <br />05/23/13 13:50 / <br />Field pH <br />7.21 <br />s.u. <br />FIELD <br />05/23/13 13:50 /' "` <br />Field Temperature, C <br />9.6 <br />°C <br />FIELD <br />05/23/13 13:50 /' "' <br />Flow <br />0.37 <br />gpm <br />FIELD <br />05/23/13 13:50 / <br />' "` Field data provided by client <br />Report RL - Analyte reporting limit. <br />Definitions: QCL - Quality control limit. <br />MDC - Minimum detectable concentration <br />MCL - Maximum contaminant level. <br />ND - Not detected at the reporting limit. <br />Page 6 of 24 <br />