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www.ewgylab.com Helena, MT 877- 472 -0711 - Billings, MT 600 -735 -4488 - Casper, WY 888- 235 -0515 <br />} -I,— r Gillette, WY 866 -686 -7175 - Rapid City, SO 886- 672 -1225 a College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 09/04/14 S27679 <br />Analyte Count Result Units <br />Method: E900.0 <br />Lab ID: Th230 -GrAB -1851 <br />Laboratory Control Sample <br />Gross Alpha <br />138 pCi /L <br />Lab ID: Sr90 -GrAB -1851 <br />Laboratory Control Sample <br />Gross Beta <br />181 pCi /L <br />Lab ID: MB -GrAB -1851 <br />6 Method Blank <br />Gross Alpha <br />0.5 pCi /L <br />Gross Alpha precision ( ±) <br />0.9 pCi /L <br />Gross Alpha MDC <br />1 pCi /L <br />Gross Beta <br />-0.6 pCi /L <br />Gross Beta precision ( ±) <br />2 pCi /L <br />Gross Beta MDC <br />3 pCi /L <br />Lab ID: C14090400- 001FDUP <br />6 Sample Duplicate <br />Gross Alpha <br />62.7 pCi /L <br />Gross Alpha precision ( ±) <br />3.18 pCi /L <br />Gross Alpha MDC <br />2.07 pCi /L <br />Gross Beta <br />12.1 pCi /L <br />Gross Beta precision ( ±) <br />2.26 pCi /L <br />Gross Beta MDC <br />3.21 pCi /L <br />Lab ID: 014090456- 002FMS <br />Sample Matrix Spike <br />Gross Alpha <br />263 pCi /L <br />Lab ID: C14090456- 002FMSD <br />Sample Matrix Spike Duplicate <br />Gross Alpha <br />283 pCi /L <br />Lab ID: C14090456- 002FMS <br />Sample Matrix Spike <br />Gross Beta <br />231 pCi /L <br />Lab ID: 014090456- 002FMSD <br />Sample Matrix Spike Duplicate <br />Gross Beta <br />221 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 09/30/14 <br />Work Order: C14090400 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: GrAB -1851 <br />Run: G542M_140919A 09/22/14 20:34 <br />120 80 120 <br />Run: G542M_140919A <br />91 80 120 <br />Run: G542M140919A <br />Run: G542M_140919A <br />Run:G542M_140919A <br />97 70 130 <br />Run:G542M_140919A <br />115 70 130 <br />Run: G542M_140919A <br />105 70 130 <br />Run: G542M_140919A <br />100 70 130 <br />09/22/14 20:34 <br />09/22/14 20:34 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 17 of 21 <br />U <br />U <br />09/22/14 20:34 <br />18 <br />20.5 <br />4.9 <br />46.3 <br />09/22/14 20:34 <br />09/22/14 20:34 <br />7.5 <br />14.7 <br />09/22/14 20:34 <br />09/22/14 20:34 <br />4.6 <br />13.9 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 17 of 21 <br />