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I www•er,erlB4ab•com Helena, MT 877- 472 -0711 *Billings, MT 800- 735 -4489 - Casper, WY 888 -235 -0515 <br />J <br />IM Gillette, WY 866 - 606 -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 />Report Date: <br />08/15/13 <br />Project: Schwartz - GW 07/17/13 S27048 <br />Work Order: <br />013070703 <br />�Analyte <br />Count Result Units <br />RL %REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6755R <br />Sample ID: C13070702- 002AMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 2_130722B <br />08/12/13 09:16 <br />Radium 226 <br />27 pCi /L <br />117 <br />70 130 <br />Sample ID: C13070702- 002AMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 2_130722B <br />08/12/13 09:16 <br />Radium 226 <br />29 pCi /L <br />127 <br />70 130 7.9 <br />20.9 <br />Sample ID: MB -RA226 -6755 <br />3 Method Blank <br />Run: BERTHOLD 770-2130722B <br />08/12/13 11:11 <br />Radium 226 <br />-0.01 pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.1 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6755 <br />Laboratory Control Sample <br />Run BERTHOLD 770- 2_130722B <br />08/12/13 11:11 <br />Radium 226 <br />9.9 pCi /L <br />88 <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 8 of 12 <br />