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www- ener&ab.com ( Helena, MT 877 - 472 -0711 • Billings, W 808 -735 -4489 • Casper, WY 888 -235 -0515 <br />r m New IM J Gillette, WY 866 -086 -7175 • Rapid City, SO 886- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />09/05/13 <br />Project: Schwartz SW 8/6/13 <br />S27019 <br />Work Order: <br />C13080305 <br />[- Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: RA -05 <br />Batch: RA228 -4488 <br />Sample ID: LCS- 228 -RA226 -6794 <br />Laboratory Control Sample <br />Run: TENNELEC- 3_130814C <br />08/28/13 10:27 <br />Radium 228 <br />5.8 pCi /L <br />81 80 120 <br />Sample ID: MB -RA226 -6794 <br />3 Method Blank <br />Run: TENNELEC- 3_130814C <br />08/28/13 10:27 <br />Radium 228 <br />-0.4 pCi /L <br />U <br />Radium 228 precision ( ±) <br />0.5 pCi /L <br />Radium 228 MDC <br />0.8 pCi /L <br />Sample ID: C13080331- 001FDUP <br />3 Sample Duplicate <br />Run: TENNELEC- 3_130814C <br />08/28/13 10:27 <br />Radium 228 <br />-0.10 pCi /L <br />390 <br />456.1 U <br />Radium 228 precision ( ±) <br />0.52 pCi /L <br />Radium 228 MDC <br />0.89 pCi /L <br />Sample ID: C13080337- 002AMS <br />Sample Matrix Spike <br />Run: TENNELEC- 3_130814C <br />08/28/13 10:27 <br />Radium 228 <br />15 pCi /L <br />90 70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 22 of 25 <br />