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WWW.energylab.com I Helena, MT 871 472 -0711 • Billings, MY 800 - 7354489 • Casper, WY 888 - 235 -0515 <br />AW)*WE=d#W A'r052 J Gillette, WY 866 -686 -7175 • Rapid City, SO 886 -672 -1225 • College Station, TX 888- 8904218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/22/13 S26997 TH S26998 <br />Analyte Count Result Units <br />Method: RA -05 <br />Sample ID: LCS- 228 -RA226 -6662 <br />Laboratory Control Sample <br />Radium 228 <br />7.0 pCi /L <br />Sample ID: MB -RA226 -6662 <br />3 Method Blank <br />Radium 228 <br />0.03 pCi /L <br />Radium 228 precision ( ±) <br />1 pCi /L <br />Radium 228 MDC <br />2 pCi /L <br />Sample ID: C13050845- 001EMS <br />Sample Matrix Spike <br />Radium 228 <br />17.9 pCi /L <br />Sample ID: C13050845- 001EMSD <br />Sample Matrix Spike Duplicate <br />Radium 228 <br />17.0 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/27/13 <br />Work Order: C13050907 <br />RL %aREC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA228 -4427 <br />Run: TENNELEC- 3_130529A 06/04/13 09:33 <br />89 80 120 <br />Run: TENNELEC- 3_130529A 06/04/13 09:33 <br />U <br />Run: TENNELEC- 3_130529A 06/04/13 09:33 <br />112 70 130 <br />Run: TENNELEC- 3_130529A 06/04/13 09:33 <br />106 70 130 5.1 34.6 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 25 of 29 <br />