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WWWN Wiab.COM ( Helena, MT 877- 472 -0711 • Billings, W 600- 735 -4489 • Casper, WY 888 -235 -0515 <br />Sm f J Gillette, WY 886 -686 -7175 • Rapid City, SD 88B- 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 />10/14/13 <br />Project: Schwartz GW 9/19/13 S27162 <br />Work Order: <br />013090821 <br />FAnalyte <br />Count Result <br />Units <br />RL ° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6861 <br />Sample ID: C13090815- 0011DUP <br />3 Sample Duplicate <br />Run: BERTHOLD 770- 2_130925A <br />10/01/13 07:01 <br />Radium 226 <br />0.29 <br />pCi /L <br />15 <br />129 <br />Radium 226 precision ( ±) <br />0.17 <br />pCi /L <br />Radium 226 MDC <br />0.22 <br />pCi /L <br />Sample ID: 013090822- 001EMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 2_130925A <br />10/01/13 07:01 <br />Radium 226 <br />25 <br />pCi /L <br />105 70 130 <br />Sample ID: MB- RA226 -6861 <br />3 Method Blank <br />Run: BERTHOLD 770- 2_130925A <br />10/01/13 07:01 <br />Radium 226 <br />-0.04 <br />pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.1 <br />pCi /L <br />Radium 226 MDC <br />0.2 <br />pCi /L <br />Sample ID: LCS -RA226 -6861 <br />Laboratory Control Sample <br />Run: BERTHOLD 770- 2_130925A <br />10/01/13 08:33 <br />Radium 226 <br />10.0 <br />pCi /L <br />88 80 120 <br />Sample ID: C13060678- 014DDUP <br />3 Sample Duplicate <br />Run: BERTHOLD 770- 2_130925A <br />10/01/13 08.33 <br />Radium 226 <br />2300 <br />pCi /L <br />14 <br />15.8 <br />Radium 226 precision ( ±) <br />65 <br />pCi /L <br />Radium 226 MDC <br />8.0 <br />pCi /L <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 />