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\ T www.energylab.com f Helena, MT 877- 472 -0711 • Billings, MT 600 - 735 -4469 • Casper, WY 888 -235 -0515 <br />JlwI llr'I Sku IM , Gillette, WY 866 -686 -7175 • Rapid City, SO 888- 672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />07/16/13 <br />Project: Schwartz GW 6/20/1 <br />S27008 & S2009 <br />Work Order: <br />C13060813 <br />F Analyte <br />Count Result Units <br />RL ° /diEC <br />Low Limit High Limit RPD <br />RPDLimit Ou W, <br />Method: E903.0 <br />Batch: RA226 -6712R <br />Sample ID: C13060790- 017CMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 2_130624B <br />07/02/13 2348 <br />Radium 226 <br />300 pCi /L <br />89 <br />70 130 <br />Sample ID: C13060790- 017CMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 2_130624B <br />07/02/13 23:48 <br />Radium 226 <br />300 pCi /L <br />92 <br />70 130 0.2 <br />13.3 <br />Sample ID: MB -RA226 -6712 <br />3 Method Blank <br />Run: BERTHOLD 770-2130624B <br />07/03/13 01:21 <br />Radium 226 <br />01 pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.2 pCi /L <br />Radium 226 MDC <br />0.3 pCi /L <br />Sample ID: LCS -RA226 -6712 <br />Laboratory Control Sample <br />Run: BERTHOLD 770- 2_130624B <br />07/03/13 01:21 <br />Radium 226 <br />13 pCi /L <br />115 <br />80 120 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 19 of 23 <br />