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ENERGY <br />LABORATORIES <br />Analyte <br />Client: Cotter Corporation <br />Project: Schwartz GW 9/13/12 S26638 <br />Method: E903.0 <br />Sample ID: C12090492- 001GMS <br />Radium 226 <br />Sample ID: 012090492 -001 GMSD <br />Radium 226 <br />Sample ID: MB -RA226 -6239 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -6239 <br />Radium 226 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Analytical ExceIenee Since 11152 <br />www.energylab.com <br />Count Result <br />3 Method Blank <br />-0.02 <br />0.07 <br />0.1 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Units <br />Sample Matrix Spike <br />15 pCi /L <br />Sample Matrix Spike Duplicate <br />13 pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Laboratory Control Sample <br />6.4 pCi /L <br />Helena, MT 877 472 - 0711 • Billings, MT 600- 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 Qual 1 <br />Batch. RA226 -6239 <br />Run: BERTHOLD 770-2_120921B 10/01/12 16:11 <br />104 70 130 <br />Run: BERTHOLD 770-2_120921B <br />88 70 130 15 <br />Run: BERTHOLD 770-2_120921B <br />Run: BERTHOLD 770-2_120921B <br />102 80 120 <br />Report Date: 10/18/12 <br />Work Order: C12090499 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />10/01/12 16:11 <br />24.9 <br />10/02/12 08:05 <br />U <br />10/02/12 08:05 <br />Page 20 of 23 <br />