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ENERGY <br />Client: Cotter Corporation <br />Project: Schwartz GW 8/19/11 S25917 <br />www.aergylab.com ( Helena, MT 877472 - 0711 • Billings, MT 800 - 735 - 4489 • Casper, WY 888 - 235 - 0515 <br />Aublical Draws Stu 185 ) Gillette, WY 866 - 886 - 7175 • Rapid City, SD 888 - 672 - 1225 • College Station, TX 888 690 - 2218 <br />Analyte <br />Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 <br />Sample ID: C11080845- 012CMS <br />Radium 226 <br />Sample Matrix Spike <br />13 pCi /L <br />Sample ID: 011080845- 012CMSD Sample Matrix Spike Duplicate <br />Radium 226 <br />Sample ID: MB -RA226 -5593 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />14 pCi /L <br />3 Method Blank <br />0.017 pCi /L <br />0.10 pCi /L <br />0.18 pCi /L <br />Sample ID: LCS -RA226 -5593 Laboratory Control Sample <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Run: BERTHOLD 770- 1_110831A <br />100 70 130 <br />Radium 226 6.9 pCi /L 109 85 115 <br />Report Date: 09/25/11 <br />Work Order: C11080860 <br />Run: BERTHOLD 770- 1_110831A 09/07/11 03:02 <br />113 70 130 13 26.4 <br />Run: BERTHOLD 770- 1_110831A <br />Run: BERTHOLD 770- 1110831A 09/07/11 04:50 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 16 of 20 <br />Batch: RA226 -5593 <br />09/07/11 03:02 <br />09/07/11 04:50 <br />U <br />