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• www.e wiblab.com Helena, MT 877- 472 -0711 - Billings, MT 800 -735 -4489 - Casper, WY 888 -235 -8515 <br />°Q'Sk" tW Gillette, WY 866 -888 -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 SW 07/9/13 S27015 and S27016 <br />Report Date: <br />Work Order: <br />08/12/13 <br />C13070373 <br />Analyte <br />Count Result Units <br />RL O %REC Low Limit High Limit RPD <br />RPDL[mit Qua[ <br />Method: E903.0 <br />Batch: RA226 -6766 <br />Sample ID: C13070805- 001CMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 1_130726B <br />08/06/13 12:06 <br />Radium 226 <br />36 pCi /L <br />92 70 130 <br />Sample ID: C13070805 -001 CMSD <br />Radium 226 <br />Sample ID: MB- RA226 -6766 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS- RA226 -6766 <br />Radium 226 <br />Sample Matrix Spike Duplicate <br />36 pCi /L <br />3 Method Blank <br />-0.04 pCi /L <br />0.08 pCi /L <br />0.2 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Laboratory Control Sample <br />11 pCi /L <br />Run: BERTHOLD 770- 1_130726B 08/06/13 12:06 <br />93 70 130 0.1 18.3 <br />Run: BERTHOLD 770- 1_130726B 08/06/13 14:29 <br />U <br />Run. BERTHOLD 770 - 1_1307268 08/06/13 14:29 <br />99 80 120 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 5 of 9 <br />