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www.ererVab.com Helena, MT 877- 472 -0711 • Billings, MT 600 - 735 -4489 • Casper, WY 888- 235 -8515 <br />- ged�dr rarc a .s+mca Im J Gillette, WY 866 -686 -7175 • Rapid City, SG 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 11/6/13 S27253 S27255 S27256 <br />Analyte <br />Count Result Units <br />Method: E903.0 <br />Sample ID: C13110376 -001 HMS <br />Sample Matrix Spike <br />Radium 226 <br />20 pCi /L <br />Sample ID: C13110376 -001 HMSD <br />Sample Matrix Spike Duplicate <br />Radium 226 <br />21 pCi /L <br />Sample ID: MB -RA226 -6955 <br />3 Method Blank <br />Radium 226 <br />-0.05 pCi /L <br />Radium 226 precision ( ±) <br />0.1 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6955 <br />Laboratory Control Sample <br />Radium 226 <br />9.9 pCi /L <br />Method: E903.0 <br />Sample ID: C13110353- 003CMS <br />Sample Matrix Spike <br />Radium 226 <br />29 pCi /L <br />Sample ID: 013110353- 003CMSD <br />Sample Matrix Spike Duplicate <br />Radium 226 <br />30 pCi /L <br />Sample ID: MB -RA226 -6959 <br />3 Method Blank <br />Radium 226 <br />0.1 pCi /L <br />Radium 226 precision ( ±) <br />0.1 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6959 <br />Laboratory Control Sample <br />Radium 226 <br />12 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 12/10/13 <br />Work Order: C13110305 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: RA226 -6955 <br />Run: BERTHOLD 770- 2_131112C 11/25/13 11:32 <br />85 70 130 <br />Run: BERTHOLD 770- 2_131112C 11/25/13 11:32 <br />92 70 130 6.8 21.8 <br />Run: BERTHOLD 770-2131112C 11/25/13 11:32 <br />U <br />Run: BERTHOLD 770- 2_131112C 11/25/13 11:32 <br />88 80 120 <br />Batch: RA226 -6959R <br />Run: BERTHOLD 770- 2_131114C 11/20/13 13:42 <br />95 70 130 <br />Run: BERTHOLD 770- 2_131114C 11/20/13 13:42 <br />96 70 130 1.0 20.2 <br />Run: BERTHOLD 770-2131114C 11/20/13 13:42 <br />U <br />Run: BERTHOLD 770- 2_131114C 11/20/13 15:20 <br />105 80 120 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 24 of 30 <br />