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• wwmerergylab.com Helena, MT 877- 472 -0711 • Billings, w 808- 735 -4489 • Casper, WY 888- 235 -0515 <br />IasheMfxes*= Vm Im Gillette, WY 886 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 07/12/13 <br />Project: Schwartz GW 6/18/13 S27005 Work Order: 013060672 <br />FAnalyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 Batch: RA226 -6705 <br />Sample ID: C13060573- 001DMS Sample Matrix Spike Run: BERTHOLD 770- 2_130620A 06/27/13 10:17 <br />Radium 226 23 pCi /L 99 70 130 <br />Sample ID: C13060573 -001 DMSD <br />Radium 226 <br />Sample ID: MB- RA226 -6705 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS- RA226 -6705 <br />Radium 226 <br />Sample Matrix Spike Duplicate <br />23 pCi /L <br />3 Method Blank <br />0.5 pCi /L <br />0.2 pCi /L <br />0.2 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Laboratory Control Sample <br />12 pCi /L <br />Run: BERTHOLD 770- 2_130620A 06/27/13 10:17 <br />101 70 130 2.5 222 <br />Run: BERTHOLD 770- 2_130620A 06/27/13 13:45 <br />Run: BERTHOLD 770- 2_130620A 06/27/13 13:45 <br />102 80 120 <br />ND - Not detected at the reporting limit. <br />Page 19 of 22 <br />