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r <br />www.mwdab.com f Helena, MT 877- 472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -0515 <br />�e' smc. tss2 Gillette, WY 866 -606 -7175 • Rapid City, SO 888 -672 -1225 • College Station, A 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />06/12/13 <br />Project: Schwartz 5/16/13 S26976- S26978 & S26980- S26983 <br />Work Order: <br />C13050679 <br />Analyte Count Result Units <br />RL %REC Low Limit High Limit <br />RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6649 <br />Sample ID: C13050697- 001EMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 1_130522B <br />05/29/13 11:31 <br />Radium 226 <br />19 pCi /L <br />81 70 130 <br />Sample ID: C13050697- 001EMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 1_130522B <br />05/29/13 13:10 <br />Radium 226 <br />22 pCi /L <br />94 70 130 <br />15 <br />22.8 <br />Sample ID: MB -RA226 -6649 <br />3 Method Blank <br />Run: BERTHOLD 770-1130522B <br />05/29/13 13:10 <br />Radium 226 <br />-0.05 pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.1 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6649 <br />Laboratory Control Sample <br />Run: BERTHOLD 770- 1_130522B <br />05/29/13 13:10 <br />Radium 226 <br />13 pCi /L <br />113 80 120 <br />Method: E903.0 <br />Sample ID: C13050643- 001GMS <br />Radium 226 <br />Sample ID: C13050643- 001GMSD <br />Radium 226 <br />Sample ID: LCS -RA226 -6647 <br />Radium 226 <br />Sample ID: MB -RA226 -6647 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample Matrix Spike <br />19 pCi /L <br />Sample Matrix Spike Duplicate <br />19 pCi /L <br />Laboratory Control Sample <br />12 pCi /L <br />3 Method Blank <br />0.08 pCi /L <br />0.1 pCdL <br />0.2 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: RA226 -6647 <br />Run: BERTHOLD 770- 2_130522B 06/04/13 14:06 <br />80 70 130 <br />Run: BERTHOLD 770- 2_130522B 06/04/13 14:06 <br />80 70 130 0.8 24.1 <br />Run: BERTHOLD 770- 2_130522B 06/04/13 15:42 <br />103 80 120 <br />Run: BERTHOLD 770- 2_130522B 06/04/13 18:13 <br />U <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 27 of 37 <br />