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- - www.eneriDlab.com Helena, MT 977 -472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -0515 <br />A>hroatf"at1""a A— 115? Gillette, WY 866-686 -1175 • Rapid City, SD 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 />10/02/13 <br />Project: Schwartz SW 9/5/13 S27130 <br />Work Order: <br />C13090203 <br />Analyte <br />Count Result <br />Units <br />RL %REC Low Limit High Limit <br />RPD <br />RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6845 <br />Sample ID: C1 3090222-001 EDUP <br />3 Sample Duplicate <br />Run: BERTHOLD 770- 1_130916B <br />09/24/13 15:32 <br />Radium 226 <br />0.20 <br />pCi /L <br />23 <br />114 <br />Radium 226 precision ( ±) <br />0.11 <br />pCi /L <br />Radium 226 MDC <br />0.14 <br />pCi /L <br />Sample ID: C13090386- 004CMS <br />Sample Matrix Spike <br />Run BERTHOLD 770- 1_130916B <br />09/24/13 17:13 <br />Radium 226 <br />24 <br />pCi /L <br />105 70 130 <br />Sample ID: MB -RA226 -6845 <br />3 Method Blank <br />Run: BERTHOLD 770- 1_130916B <br />09/24/13 21:58 <br />Radium 226 <br />-0.003 <br />pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.08 <br />pCi /L <br />Radium 226 MDC <br />0.1 <br />pCi /L <br />Sample ID: LCS -RA226 -6845 <br />Laboratory Control <br />Sample <br />Run: BERTHOLD 770- 1_130916B <br />09/24/13 21:58 <br />Radium 226 <br />12 <br />pCi /L <br />108 80 120 <br />Method: E903.0 <br />Sample ID: C13090173- 0021MS <br />Radium 226 <br />Sample ID: C13090173- 0021MSD <br />Radium 226 <br />Sample ID: MB -RA226 -6838 <br />Radium 226 <br />Radium 226 precision ( ±) <br />Radium 226 MDC <br />Sample ID: LCS - RA226 -6838 <br />Radium 226 <br />Sample Matrix Spike <br />21 pCi /L <br />Sample Matrix Spike Duplicate <br />21 pCi /L <br />3 Method Blank <br />-0.09 pCi /L <br />0.07 pCi /L <br />0.2 pCi /L <br />Laboratory Control Sample <br />12 pCi /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: RA226 -6838 <br />Run: BERTHOLD 770- 2_130913D 09/24/13 11:53 <br />91 70 130 <br />Run: BERTHOLD 770- 2_130913D 09/24/13 11:53 <br />92 70 130 1.2 22.1 <br />Run: BERTHOLD 770- 2_130913D 09/24/13 13:56 <br />U <br />Run: BERTHOLD 770- 2_130913D 09/24/13 13:56 <br />103 80 120 <br />ND - Not detected at the reporting limit. <br />U - Not detected at minimum detectable concentration <br />Page 21 of 25 <br />