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ENERGY <br />L. A H b RA1 G) N I E•S <br />Client: Cotter Corporation <br />Project: Schwartz - SW 02 -19 -13 S26796 S26798 Work Order: C13020608 <br />Analyte <br />Method: E903.0 <br />Sample ID: C13020608- 002CMS <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />www.energylab.com <br />Analytical Excellence Since 1952 <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Sample Matrix Spike <br />24 pCi /L <br />Sample ID: LCS -RA226 -6531 Laboratory Control Sample <br />Radium 226 12 pCi /L <br />Helena, MT 877 - 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, W Y 866 -686 -7175 • Rapid City, SD 888 -672 -1225 • College Station, TX 888 - 690 -221 B <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 03/06/13 <br />Batch: RA226 -6531 <br />Run: BERTHOLD 770- 1_130226A 03/05/13 09:55 <br />103 70 130 <br />Sample ID: C13020608- 002CMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770- 1_130226A 03/05/13 09:55 <br />Radium 226 24 pCi /L 104 70 130 0.2 21.4 <br />Sample ID: MB -RA226 -6531 3 Method Blank Run: BERTHOLD 770- 1_130226A 03/05/13 11:36 <br />Radium 226 -0.03 pCi /L U <br />Radium 226 precision ( ±) 0.1 pCi /L <br />Radium 226 MDC 0.2 pCi /L <br />Run: BERTHOLD 770- 1_130226A 03/05/13 11:36 <br />110 80 120 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 5 of 9 <br />