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ENERGY <br />LABORATORIES <br />Client: Cotter Corporation <br />Project: Schwartz GW 8/9/2012 S26555 <br />Analyte Count Result Units <br />Method: E903.0 <br />Sample ID: 012080520 -001 CMS <br />Radium 226 <br />Sample ID: C12080520 -001 CMSD <br />Radium 226 <br />Sample ID: MB -RA226 -6185 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -6185 <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www energylab.com <br />Analytical frcelence Since 1052 r <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Sample Matrix Spike <br />13 pCi /L <br />Sample Matrix Spike Duplicate <br />12 pCi /L <br />3 Method Blank <br />-0.03 <br />0.1 <br />0.2 <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />6.4 pCi /L <br />Helena, MT 877- 472 -0111 • Billings, MT 800 - 735 -4469 • Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 888 -872 -1225 • College Station, TX 888 - 690 -2218 <br />RL %REC Low Limit High Limit <br />Run: BERTHOLD 770-2_120817A <br />97 70 130 <br />Run: BERTHOLD 770-2_120817A <br />94 70 130 3.2 <br />Run: BERTHOLD 770-2_120817A <br />Run: BERTHOLD 770-2_120817A <br />102 80 120 <br />Report Date: 09/25/12 <br />Work Order: C12080487 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />RPD RPDLimit Dual <br />Batch: RA226 -6185 <br />08/23/12 08:09 <br />Page 16 of 19 <br />08/23/12 08:09 <br />26.2 <br />08/23/12 09:42 <br />U <br />08/23/12 09:42 <br />