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ENERGY <br />A iORATC)F S <br />Client: Cotter Corporation <br />Project: Schwartz GW 6/30/11 S25825 <br />Method: E903.0 <br />Sample ID: C11070080- 001DMS <br />Radium 226 <br />Sample ID: C11070080 - 001 DMSD <br />Radium 226 <br />Sample ID: MB - RA226 - 5483 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -5483 <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />w+a aster yleb.com <br />AQSgafealFrcellentsSou 1Sit <br />Sample Matrix Spike <br />14 pCi /L <br />3 Method Blank <br />-0.12 <br />0.088 <br />0.22 <br />Helena, MT 877 - 472 -0711 • Billings, MT 800 -735- 4489 • Casper, WY 888 - 235 -0515 <br />Gillette, WY 886 -686 -7175 • Rapid City, SO 888 -872 -1225 • Collage Station, TX 888 -690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Analyte Count <br />Result Units <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Sample Matrix Spike Duplicate <br />15 pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />7.0 pCi /L <br />Run: BERTHOLD 770-2_110707A <br />107 70 130 <br />Run: BERTHOLD 770-2_110707A <br />116 70 130 8.5 <br />Run: BERTHOLD 770-2_110707A <br />Run: BERTHOLD 770-2_110707A <br />113 85 115 <br />Report Date: 08/01/11 <br />Work Order: C11070080 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -5483 <br />07/14/11 02:50 <br />Page 17 of 21 <br />07/14/11 02:50 <br />25.7 <br />07/14/11 04:26 <br />U <br />07/14/11 04:26 <br />