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T www.emgylab.com Helena, W 877472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />° tltsy Gillette, WY 866 -686 -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 />07/08/13 <br />Project: Schwartz GW 6/6/2013 S26941 <br />Work Order: <br />C13060270 <br />F Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6693 <br />Sample ID: C13060291 -001 EMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 2_130613C <br />06/19/13 15:25 <br />Radium 226 <br />25 pCi /L <br />107 70 130 <br />Sample ID: C13060291 -001 EMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 2_130613C <br />06/19/13 15:25 <br />Radium 226 <br />25 pCi /L <br />106 70 130 0.9 <br />21.7 <br />Sample ID: MB -RA226 -6693 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS- RA226 -6693 <br />Radium 226 <br />3 Method Blank <br />-0.07 pCi /L <br />0.10 pCi /L <br />0.2 pCi /L <br />Laboratory Control Sample <br />11 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: BERTHOLD 770- 2_130613C 06/19/13 17:09 <br />U <br />Run: BERTHOLD 770- 2_130613C 06/19/13 17:09 <br />102 80 120 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 18 of 21 <br />