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www.vweab.com � Helena, MT 877 -472 -0711 • Billings, W 600- 735 -4489 • Casper, WY 888- 235 -8515 <br />�"°°Q'DC° yttis Gillette, WY 866 -686 -7175 • Rapid City, SD 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 />Project: Schwartz -SW 8/7/13 S27022 <br />Analyte <br />Count Result <br />Units <br />Method: RA -05 <br />Sample ID: LCS- 228 -RA226 -6794 <br />Laboratory Control Sample <br />Radium 228 <br />5.8 <br />pCi /L <br />Sample ID: MB -RA226 -6794 <br />3 Method Blank <br />Radium 228 <br />-0.4 <br />pCi /L <br />Radium 228 precision ( ±) <br />0.5 <br />pCi /L <br />Radium 228 MDC <br />0.8 <br />pCi /L <br />Sample ID: C13080331- 001FDUP <br />3 Sample Duplicate <br />Radium 228 <br />-010 <br />pCi /L <br />Radium 228 precision ( ±) <br />0.52 <br />pCi /L <br />Radium 228 MDC <br />0.89 <br />pCi /L <br />Sample ID: 013080337- 002AMS <br />Sample Matrix Spike <br />Radium 228 <br />15 <br />pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Revised Date: 09/12/13 <br />Report Date: 09/05/13 <br />Work Order: 013080331 <br />RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA228 -4488 <br />Run: TENNELEC- 3_130814C 08/28/13 10:27 <br />81 80 120 <br />Run: TENNELEC- 3_130814C 08/28/13 10:27 <br />U <br />Run: TENNELEC- 3_130814C 08/28/13 10:27 <br />390 456.1 U <br />Run: TENNELEC- 3_130814C 08/28/13 10:27 <br />90 70 130 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 23 of 26 <br />