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www.ener&b.com If Helena, MT 877- 472 -0711 • Billings, MT 800 - 735.4489 a Casper, WY 888 - 235 -8515 <br />AuWW IM 1 Gillette, WY 866 -686 -7175 • Rapid City, SD 686- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />12/05/13 <br />Project: Schwartz GW 11/12/13 <br />S27218 <br />Work Order: <br />C13110612 <br />Analyte <br />Count Result Units <br />RL ° /6REC <br />Low Limit High Limit <br />RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6970 <br />Sample ID: C13110616- 001CMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 1_131119A <br />11/25/13 21:54 <br />Radium 226 <br />22 pCi /L <br />98 <br />70 130 <br />Sample ID: 013110616- 001CMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 1_131119A <br />11/25/13 21:54 <br />Radium 226 <br />22 pCi /L <br />97 <br />70 130 <br />0.8 <br />21.2 <br />Sample ID: MB -RA226 -6970 <br />3 Method Blank <br />Run: BERTHOLD 770- 1_131119A <br />11/25/13 21:54 <br />Radium 226 <br />-0.2 pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.09 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6970 <br />Laboratory Control Sample <br />Run: BERTHOLD 770- 1_131119A <br />11/25/13 23:28 <br />Radium 226 <br />12 pCi /L <br />106 <br />80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 18 of 21 <br />