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ENERGY <br />I_f- 3O AIC It =5 <br />cgi <br />Client: Cotter Corporation <br />Project: Schwartz SW 9/13/2012 S26634 & S26635 Work Order: C12090506 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qua! <br />Method: E903.0 <br />Sample ID: C12090492- 001GMS <br />Radium 226 <br />Sample ID: C12090492- 001GMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770 - 2_120921 B 10/01/12 16 <br />Radium 226 13 pCi /L 88 70 130 15 24.9 <br />Sample ID: MB -RA226 -6239 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />www.energylab.com <br />Analytical &rellence Axe 1932 <br />Sample Matrix Spike <br />15 pCi /L <br />3 Method Blank <br />-0.02 pCi /L <br />0 07 pCi /L <br />0.1 pCi /L <br />Sample ID: LCS -RA226 -6239 Laboratory Control Sample <br />Radium 226 6.4 pCi /L 102 80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Helena, MT 677 472 - 0711 • Billings, MT 800 735 - 4489 • Casper, WY 888 - 235 - 0515 <br />Gillette, WY 868 - 686 - 7175 • Rapid City, SD 888 - 672 - 1225 • College Station, TX 888 - 690 - 2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Report Date: 10/10/12 <br />Run: BERTHOLD 770- 2_120921B <br />104 70 130 <br />Run: BERTHOLD 770-2_120921B <br />Run: BERTHOLD 770-2_120921B 10/02/12 08:05 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -6239 <br />10/01/12 16:11 <br />10/02/12 08:05 <br />U <br />Page 5 of 7 <br />