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www.enerdab.com Helena, W 877- 472 -0711 - Billings, MT 806- 735 -4489 - Casper, WY 888- 235 -0515 <br />A"~ EmNafin AV* IM Gillette, WY 866 -686 -7175 - Rapid City, SO 886 -672 -1225 - College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 5/21/13 S26991 - S26995 <br />Analyte Count Result Units <br />Method: E200.8 <br />Report Date: 06/27/13 <br />Work Order: C13050860 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: ICPMS2- C_130626A <br />Sample ID: ICV Initial Calibration Verification Standard 06/26/13 18:27 <br />Chromium 0.0504 mg /L 0.0010 101 90 110 <br />Method: E200.8 <br />Run: ICPMS4- C_130611 A <br />102 <br />85 115 <br />Batch: 37946 <br />Sample ID: MB -37946 <br />Method Blank <br />Run: ICPMS4- C_130611 A <br />Run: ICPMS2- C_130626A <br />06/26/13 19.41 <br />Chromium <br />0.002 mg /L <br />0.0003 <br />Run: ICPMS4- C_130611 A <br />ND mg /L <br />Sample ID: LCS3 -37946 <br />Laboratory Control Sample <br />2 <br />Run: ICPMS2- C_130626A <br />06/26/13 19:44 <br />Chromium <br />0.482 mg /L <br />0.0050 <br />96 85 115 <br />Uranium <br />Sample ID: 013050860- 005DMS3 <br />Sample Matrix Spike <br />0.00030 <br />Run: ICPMS2- C_130626A <br />06/26/13 20:09 <br />Chromium <br />0.488 mg /L <br />0.0050 <br />97 70 130 <br />0.0184 mg /L <br />Sample ID: C13050860- 005DMSD <br />Sample Matrix Spike Duplicate <br />Run: ICPMS2- C_130626A <br />06/26/13 20:12 <br />Chromium <br />0.473 mg /L <br />0.0050 <br />94 70 130 3.2 <br />20 <br />Method: E200.8 Analytical Run: ICPMS4- C_130611A <br />Sample ID: ICV 2 Initial Calibration Verification Standard 06/11/13 19:01 <br />Silver 0.0212 mg /L 0.0010 106 90 110 <br />Uranium 0.0477 mg /L 0.00030 95 90 110 <br />Method: E200.8 <br />Run: ICPMS4- C_130611 A <br />102 <br />85 115 <br />Sample ID: LRB <br />2 <br />Method Blank <br />Run: ICPMS4- C_130611 A <br />Silver <br />70 130 <br />ND mg /L <br />6E -05 <br />Uranium <br />Run: ICPMS4- C_130611 A <br />ND mg /L <br />9E -06 <br />Sample ID: LFB <br />2 <br />Laboratory Fortified Blank <br />Silver <br />0.0204 mg /L <br />0.0010 <br />Uranium <br />0.0516 mg /L <br />0.00030 <br />Sample ID: C13050868- 004CMS4 <br />2 <br />Sample Matrix Spike <br />Silver <br />0.0184 mg /L <br />0.0010 <br />Uranium <br />0.0708 mg /L <br />0.00030 <br />Sample ID: C13050868- 004CMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Silver <br />0.0194 mg /L <br />0.0010 <br />Uranium <br />0.0716 mg /L <br />0.00030 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: ICPMS4- C_130611 A <br />ND - Not detected at the reporting limit. <br />Batch: R174698 <br />06/11/13 18:02 <br />06/11/13 18:07 <br />06/11/13 20:41 <br />06/11/13 20:45 <br />5.2 20 <br />1.1 20 <br />Page 18 of 31 <br />Run: ICPMS4- C_130611 A <br />102 <br />85 115 <br />103 <br />85 115 <br />Run: ICPMS4- C_130611 A <br />92 <br />70 130 <br />112 <br />70 130 <br />Run: ICPMS4- C_130611 A <br />97 <br />70 130 <br />114 <br />70 130 <br />ND - Not detected at the reporting limit. <br />Batch: R174698 <br />06/11/13 18:02 <br />06/11/13 18:07 <br />06/11/13 20:41 <br />06/11/13 20:45 <br />5.2 20 <br />1.1 20 <br />Page 18 of 31 <br />