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ENERGY <br />LABORATORIES <br />Client: Cotter Corporation <br />Project: Schwartz GW 9/27/2012 S26570 <br />Analyte Count <br />Method: E903.0 <br />Sample ID: LCS -RA226 -6274 <br />Radium 226 <br />Sample ID: MB -RA226 -6274 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: 012100013- 001FMS <br />Radium 226 <br />Sample ID: C12100013- 001FMSD <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />Analytical Excellence Since 1851 <br />3 Method Blank <br />-0.1 <br />0.09 <br />0.2 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Result Units <br />Laboratory Control Sample <br />6.4 pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Sample Matrix Spike <br />13 pCi /L <br />Sample Matrix Spike Duplicate <br />15 pCi /L <br />Helena, MT 877- 472 -0711 • Billings, MT 80D -735 -4489 • Casper, WY 888 235 - 0515 <br />Gillette, WY 866 - 686 -7175 • Rapid City, SD 888 - 672 - 1225 • College Station, Tx 888 - 690 - 2218 <br />RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Run: BERTHOLD 770- 2_121003B <br />104 80 120 <br />Run: BERTHOLD 770- 2_121003B <br />Run: BERTHOLD 770- 2_121003B <br />95 70 130 <br />Run: BERTHOLD 770- 2_121003B <br />108 70 130 9.6 <br />Report Date: 10/23/12 <br />Work Order: C12100013 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -6274 <br />10/09/12 07:05 <br />10/09/12 07:05 <br />U <br />10/09/12 10:37 <br />10/09/12 10:37 <br />27 <br />Page 17 of 20 <br />