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ENERGY <br />LABORATORIES <br />01$ <br />Client: Cotter Corporation <br />www.energylab.com <br />Analytical Excellence Since 1952 1 1 <br />Project: Schwartz GW 9/20/2012 S26607 & S26608 Work Order: C12090782 <br />Analyte <br />Method: E903.0 <br />Sample ID: C12090772- 001DMS <br />Radium 226 <br />Count Result Units <br />Sample Matrix Spike <br />32 6 pCi /L <br />Sample ID: C12090772- 001DMSD Sample Matrix Spike Duplicate Run: BERTHOLD 770- 1_120924B 10/02/12 11:59 <br />Radium 226 30.3 pCi /L 98 70 130 7.4 20.1 <br />Sample ID: MB -RA226 -6251 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />3 Method Blank <br />-0.04 pCi /L <br />0.09 pCi /L <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6251 Laboratory Control Sample <br />Helena, MT 871 412 - 0711 • Billings, MT 800 735 - 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 />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Run: BERTHOLD 770- 1_120924B <br />116 70 130 <br />Run: BERTHOLD 770- 1_120924B <br />Radium 226 5.6 pCi /L 89 80 120 <br />Report Date: 10/18/12 <br />Run: BERTHOLD 770- 1_120924B 10/02/12 13:45 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -6251 <br />10/02/12 11:59 <br />10/02/12 13:45 <br />U <br />Page 17 of 21 <br />