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www.erwgylab.com ( Helena, MT 877- 472 -0711 • Billings, MT 600- 735 -4489 • Casper, WY 888 -235 -0515 <br />} grWW-M A~ ExcWkm Slar'tJ J Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888- 690 -2218 <br />LABORATORY ANALYTICAL REPORT <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />07/05/13 <br />Project: <br />Schwartz GW 06/12/13 S27034 <br />Collection Date: <br />06/12/13 10:00 <br />Lab ID: <br />C13060505 -001 <br />DateReceived: <br />06/13/13 <br />Client Sample ID: <br />Domestic Well (S27034) <br />Matrix: <br />Aqueous <br />0.17 <br />pCi /L <br />MCL/ <br />06/24/13 08:25 / trs <br />Analyses <br />Result Units <br />Qualifiers RL QCL Method Analysis Date / By <br />RADIONUCLIDES - DISSOLVED <br />Radium 226 <br />0.18 <br />pCi /L <br />E903.0 <br />06/24/13 08:25 / trs <br />Radium 226 precision ( ±) <br />0.13 <br />pCi /L <br />E903.0 <br />06/24/13 08:25 / trs <br />Radium 226 MDC <br />0.17 <br />pCi /L <br />E903.0 <br />06/24/13 08:25 / trs <br />RADIONUCLIDES - TOTAL <br />Gross Alpha <br />5.9 <br />pCi /L <br />E900.0 <br />06/28/13 17 15 / Ibb <br />Gross Alpha precision ( ±) <br />1.3 <br />pCi /L <br />E900.0 <br />06/28/13 17:15 / Ibb <br />Gross Alpha MDC <br />1.7 <br />pCi /L <br />E900.0 <br />06/28/13 17:15 / Ibb <br />Gross Beta <br />1.8 <br />pCi /L U <br />E900.0 <br />06/28/13 1715 / Ibb <br />Gross Beta precision ( ±) <br />1.6 <br />pCi /L <br />E900.0 <br />06/28/13 17:15 / Ibb <br />Gross Beta MDC <br />2.6 <br />pCi /L <br />E900.0 <br />06/28/13 17:15 / Ibb <br />DATA QUALITY <br />A/C Balance ( ±5) <br />-0.916 <br />% <br />A1030 E <br />07/01/13 07:16 / kbh <br />Anions <br />411 <br />meq /L <br />A1030 E <br />07/01/13 07:16 / kbh <br />Cations <br />4.03 <br />meq /L <br />A1030 E <br />07/01/13 07:16 / kbh <br />Solids, Total Dissolved Calculated <br />250 <br />mg /L <br />A1030 E <br />07/01/13 07:16 / kbh <br />TDS Balance (0.80 - 1.20) <br />1.04 <br />A1030 E <br />07/01/13 07:16 / kbh <br />FIELD PARAMETERS <br />Depth to Water <br />29.4 <br />feet <br />FIELD <br />06/12/13 10:00 / * ** <br />Field Conductivity <br />410 <br />umhos /cm <br />FIELD <br />06/12/13 10:00 / * ** <br />Field pH <br />7.05 <br />s.u. <br />FIELD <br />06/12/13 10:00 / * ** <br />Field Temperature, C <br />12.4 <br />°C <br />FIELD <br />06/12/13 10:00 / * ** <br />Flow <br />4.87 <br />gpm <br />FIELD <br />06/12/13 10:00 / * ** <br />Field data provided by client <br />Report RL - Analyte reporting limit. <br />MCL - Maximum contaminant level. <br />Definitions: QCL - Quality control limit. <br />ND - Not detected at the reporting <br />limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />Page 4 of 21 <br />