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Sample ID: LCS -RA226 -7064 Laboratory Control Sample <br />Radium 226 11 pCi /L <br />Method: E903.0 <br />Sample ID: C14020107- 001GMS <br />Radium 226 <br />Sample ID: C14020107- 001GMSD <br />Radium 226 <br />Sample ID: MB- RA226 -7066 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -7066 <br />Radium 226 <br />Sample Matrix Spike <br />24 pCi /L <br />Sample Matrix Spike Duplicate <br />23 pCi /L <br />3 Method Blank <br />0.08 pCi /L <br />0.1 pCi /L <br />0.2 pCi /L <br />Laboratory Control Sample <br />11 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: G542M_140206B 02/12/14 07:34 <br />96 80 120 <br />Run: G542M_140207A <br />106 70 130 <br />Run: G542M_140207A <br />98 70 130 <br />Run: G542M_140207A <br />Run: G542M_140207A <br />101 80 120 <br />Batch: RA226 -7066 <br />02/19/14 05:57 <br />02/19/14 05:57 <br />7.5 20.5 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />02/19/14 07:29 <br />U <br />02/19/14 07:29 <br />Page 23 of 27 <br />www.emvsb.com <br />Helena, MT 877- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -8515 <br />AWWW 1p1 V= rat <br />Gillette, WY 866 -086 -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 />Revised Date: <br />03/06/14 <br />Client: Cotter Corporation <br />Report Date: <br />02/24/14 <br />Project: Schwartz -SW 02/04/14 <br />S27321 Work Order: <br />C14020109 <br />[Analyte <br />Count Result Units RL ° /oREC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -7064 <br />Sample ID: C14020107 -001 DMS <br />Sample Matrix Spike Run: G542M_140206B <br />02/12/14 07:34 <br />Radium 226 <br />19 pCi /L 83 70 130 <br />Sample ID: C14020107 -001 DMSD <br />Sample Matrix Spike Duplicate Run: G542M_140206B <br />02/12/14 07:34 <br />Radium 226 <br />22 pCi /L 97 70 130 15 <br />22.5 <br />Sample ID: MB- RA226 -7064 <br />3 Method Blank Run: G542M 140206B <br />02/12/14 07:34 <br />Radium 226 <br />0.2 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 -7064 Laboratory Control Sample <br />Radium 226 11 pCi /L <br />Method: E903.0 <br />Sample ID: C14020107- 001GMS <br />Radium 226 <br />Sample ID: C14020107- 001GMSD <br />Radium 226 <br />Sample ID: MB- RA226 -7066 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS -RA226 -7066 <br />Radium 226 <br />Sample Matrix Spike <br />24 pCi /L <br />Sample Matrix Spike Duplicate <br />23 pCi /L <br />3 Method Blank <br />0.08 pCi /L <br />0.1 pCi /L <br />0.2 pCi /L <br />Laboratory Control Sample <br />11 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: G542M_140206B 02/12/14 07:34 <br />96 80 120 <br />Run: G542M_140207A <br />106 70 130 <br />Run: G542M_140207A <br />98 70 130 <br />Run: G542M_140207A <br />Run: G542M_140207A <br />101 80 120 <br />Batch: RA226 -7066 <br />02/19/14 05:57 <br />02/19/14 05:57 <br />7.5 20.5 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />02/19/14 07:29 <br />U <br />02/19/14 07:29 <br />Page 23 of 27 <br />