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gum www.ene 6ab.com Helena, MT 877 - 472 -0711 a Billings, MT 800 -735 -4469 a Casper, WY 888- 235 -8515 <br />�- J - - -- Gillette, WY 866 -686 -7175 a Rapid City, SD 888- 672 -1225 a College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/03/13 <br />Project: Schwartz SW 11/06/13 S27254 Work Order: C13110376 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E903.0 <br />Batch: RA226 -6955 <br />Sample ID: C13110376 -001 HMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 2_131112C <br />11/25/13 11:32 <br />Radium 226 <br />20 pCi /L <br />85 70 130 <br />Sample ID: C13110376 -001 HMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 2_131112C <br />11/25/13 11:32 <br />Radium 226 <br />21 pCi /L <br />92 70 130 6.8 <br />21.8 <br />Sample ID: MB -RA226 -6955 <br />3 Method Blank <br />Run: BERTHOLD 770-2131112C <br />11/25/13 11:32 <br />Radium 226 <br />-0.05 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 -6955 <br />Laboratory Control Sample <br />Run: BERTHOLD 770- 2_131112C <br />11/25/13 11:32 <br />Radium 226 <br />9.9 pCi /L <br />88 80 120 <br />Method: E903.0 <br />Batch: RA226 -6964 <br />Sample ID: 013110376- 001GMS <br />Sample Matrix Spike <br />Run: BERTHOLD 770- 2_131115A <br />11/25/13 08:12 <br />Radium 226 <br />21 pCi /L <br />93 70 130 <br />Sample ID: C13110376- 001GMSD <br />Sample Matrix Spike Duplicate <br />Run: BERTHOLD 770- 2_131115A <br />11/25/13 08:12 <br />Radium 226 <br />22 pCi /L <br />97 70 130 3.3 <br />21.2 <br />Sample ID: MB -RA226 -6964 <br />3 Method Blank <br />Run: BERTHOLD 770-2131115A <br />11/25/13 08:12 <br />Radium 226 <br />0.01 pCi /L <br />U <br />Radium 226 precision ( ±) <br />0.10 pCi /L <br />Radium 226 MDC <br />0.2 pCi /L <br />Sample ID: LCS -RA226 -6964 <br />Laboratory Control Sample <br />Run: BERTHOLD 770- 2_131115A <br />11/25/13 08:12 <br />Radium 226 <br />11 pCi /L <br />93 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 20 of 24 <br />