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ENERGY <br />Client: Cotter Corporation <br />Project: Schwartz SW 8/2/11 S25901- S25908 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: RA -05 <br />Sample ID: LCS- 228 -RA226 -5551 <br />Radium 228 <br />Sample ID: MB -RA226 -5551 <br />Radium 228 <br />Radium 228 precision ( ±) <br />Radium 228 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.anereflab.com <br />Aedfilcal Loam= Slow 1802 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Laboratory Control Sample <br />6.89 pCi /L <br />3 Method Blank <br />-0 4 pCi /L <br />0.6 pCi /L <br />1 pCi /L <br />Sample ID: 011071095- 002AMS Sample Matrix Spike <br />Helene, MT 877- 472 -0711 • Billings, MT 800- 735 -4488 • Casper, WY 888 -235 -0515 <br />Gillette, WY 886- 686 -7175 • Rapid City, SD 888 - 672 -1225 • College Station, TX 888 - 690 -2218 <br />Run: TENNELEC -3 110808A <br />110 80 120 <br />Run: TENNELEC- 3_110808A <br />Radium 228 14.6 pCi /L 99 70 130 <br />Report Date: 09/13/11 <br />Work Order: 011080157 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA228 -3839 <br />08/22/11 14:05 <br />08/22/11 14:05 <br />U <br />Run: TENNELEC -3 110808A 08/22/11 14:05 <br />Sample ID: 011071095 -002AMSD Sample Matrix Spike Duplicate Run: TENNELEC- 3_110808A 08/22/11 14:05 <br />Radium 228 14.9 pCi /L 101 70 130 2.1 35 <br />Page 30 of 41 <br />