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• f - www.wwdab.com Helena, Hf 877- 472 -0711 • Billings, MIT 800- 735 -4489 • Gasper, WY 888 - 235 -0515 <br />pC1 �°�'tlet Gillette, WY 866 - 666 -7175 • Rapid City, SO 886- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 12/1/14 S27819 <br />Analyte <br />Count Result Units <br />Method: RA -05 <br />Lab ID: LCS- 228 -RA226 -7486 <br />Laboratory Control Sample <br />Radium 228 <br />7.8 pCi /L <br />Lab ID: MB -RA226 -7486 <br />3 Method Blank <br />Radium 228 <br />1.0 pCi /L <br />Radium 228 precision ( ±) <br />0.8 pCi /L <br />Radium 228 MDC <br />1 pCi /L <br />Lab ID: 014120020- 002AMS <br />Sample Matrix Spike <br />Radium 228 <br />17.6 pCi /L <br />Lab ID: C14120020- 002AMSD <br />Sample Matrix Spike Duplicate <br />Radium 228 <br />16.8 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 12/18/14 <br />Work Order: C14120084 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA228 -4834 <br />Run: TENNELEC- 3_141203D 12/11/14 10:12 <br />104 80 120 <br />Run: TENNELEC -3 141203D <br />Run: TENNELEC- 3_141203D <br />123 70 130 <br />Run: TENNELEC- 3_141203D <br />117 70 130 4.8 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />12/11/14 10:12 <br />U <br />12/11/14 10:12 <br />12/11/14 10:12 <br />35.9 <br />Page 8 of 12 <br />