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• www.ener&b.com Helena, MT 871472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -8515 <br />f <br />"#"EWa6MYMIZ2 f Gillette, WY 886 -686 -7175 • Rapid City, SD 888- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Pre ared b Cas er WY Branch <br />Sample ID: LCS- RA226 -6649 Laboratory Control Sample <br />Radium 226 13 pCi /L <br />Method: <br />E903.0 <br />p y p <br />Revised Date: 06/18/13 <br />Client: Cotter Corporation <br />Sample ID: <br />Report Date: <br />06/13/13 <br />Project: Schwartz 5/16/13 S26979 <br />Sample ID: <br />LCS - RA226 -6647 <br />Work Order: <br />013050681 <br />Analyte Count Result <br />Units RL %REC <br />Low Limit High Limit RPD <br />RPDLimit Quay <br />Method: E903.0 <br />Batch: RA226 -6649 <br />Sample ID: C13050697- 001EMS <br />Sample Matrix <br />Spike <br />Run: BERTHOLD 770- 1_130522B <br />05/29/13 11:31 <br />Radium 226 <br />19 <br />pCi /L 81 <br />70 130 <br />Sample ID: C13050697- 001EMSD <br />Sample Matrix <br />Spike Duplicate <br />Run: BERTHOLD 770- 1_130522B <br />05/29/13 13:10 <br />Radium 226 <br />22 <br />pCi /L 94 <br />70 130 15 <br />22.8 <br />Sample ID: MB- RA226 -6649 3 <br />Method Blank <br />Run: BERTHOLD 770- 1_130522B <br />05/29/13 13:10 <br />Radium 226 <br />-0.05 <br />pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.1 <br />pCi /L <br />Radium 226 MDC <br />0.2 <br />pCi /L <br />Sample ID: LCS- RA226 -6649 Laboratory Control Sample <br />Radium 226 13 pCi /L <br />Method: <br />E903.0 <br />Sample ID: <br />C13050643- 001GMS <br />Radium 226 <br />Sample ID: <br />C13050643- 001GMSD <br />Radium 226 <br />Sample ID: <br />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 pCi /L <br />0.2 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: BERTHOLD 770- 1_130522B 05/29/13 13:10 <br />113 80 120 <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 08 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 21 of 25 <br />