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wwwtmgylab.com ( Helena, MT 871 472 -0711 • Billings, MT NO- 735 -4489 • Casper, WY 888 - 235 -0515 <br />A-Y&W Fieafll —Since 1832 J Gillette, WY 866 -666 -7175 • Rapid City, SD 886 -672 -1225 • College Station, Tx 868 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />09/26/14 <br />Project: Schwartz -SW 9/3/14 S27625 and S27660 <br />Work order: <br />C14090147 <br />Analyte Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: RA -05 <br />Batch: RA228 -4758 <br />Lab ID: LCS- 228 -RA226 -7352 <br />Laboratory Control Sample <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />8.7 pCi /L <br />126 80 120 <br />S <br />- LCS response is outside of the acceptance <br />range for this analysis. Since the MB, MS, and MSD are acceptable the batch is approved. <br />Lab ID: MB -RA226 -7352 <br />3 Method Blank <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />0.3 pCi /L <br />U <br />Radium 228 precision ( ±) <br />1 pCi /L <br />Radium 228 MDC <br />2 pCi /L <br />Lab ID: 014090030- 002DMS <br />Sample Matrix Spike <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />16.2 pCi /L <br />115 70 130 <br />Lab ID: C14090030- 002DMSD <br />Sample Matrix Spike Duplicate <br />Run: TENNELEC- 3_140908A <br />09/17/14 13:39 <br />Radium 228 <br />17.2 pCi /L <br />123 70 130 5.9 <br />39.6 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />U - Not detected at minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />S - Spike recovery outside of advisory limits. <br />Page 24 of 29 <br />