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ENERGY <br />LABORATORIES <br />Client: Cotter Corporation <br />Project: Schwartz -GW 9/6/12 S26563 <br />Analyte Count <br />Method: E903.0 <br />Sample ID: LCS -RA226 -6232 <br />Radium 226 <br />Sample ID: MB -RA226 -6232 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: 012090272- 001DMS <br />Radium 226 <br />Sample ID: 012090272- 001DMSD <br />Radium 226 <br />www.energylab.com <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Mtlytical Excellence Sines 1852 <br />• <br />3 Method Blank <br />-0.02 <br />0.1 <br />0.2 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Result Units <br />Laboratory Control Sample <br />6.8 pCi /L <br />pCi /L <br />pCi /L <br />pCi /L <br />Sample Matrix Spike <br />12.2 pCi /L <br />Sample Matrix Spike Duplicate <br />12.6 pCi /L <br />Helena, MT 877 472 - 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 />Run: BERTHOLD 770- 2_120914A <br />108 80 120 <br />Run: BERTHOLD 770- 2_120914A <br />Run' BERTHOLD 770- 2_120914A <br />98 70 130 <br />Run: BERTHOLD 770- 2_120914A <br />101 70 130 3.2 <br />Report Date: 10/18/12 <br />Work Order: C12090274 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Batch: RA226 -6232 <br />09/21/12 06:58 <br />09/21/12 06:58 <br />U <br />09/21/12 06:58 <br />09/21/12 06:58 <br />27 <br />Page 20 of 23 <br />