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www.mwdab.com i Helena, MT 077- 472 -0711 • Billings, MT 600 -735 -4489 • Casper, WY 888 -235 -0515 <br />Aaroy"E= lima.Aae.1lst ) Gillette, WY 866 -686 -7175 - Rapid City, SO 088 -672 -1225 - College Station, T% 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: 07/30/13 <br />Project: Schwartz -GW 7/3/13 S27057 Work Order: C13070189 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />E200.8 <br />Analytical Run: ICPMS4- C_130712A <br />Sample ID: ICV <br />7 Initial Calibration Verification Standard <br />MB -38183 <br />7 Method Blank <br />07/12/13 12:59 <br />Antimony <br />0.0537 <br />mg /L <br />0.0010 <br />107 <br />90 <br />110 <br />Copper <br />0.0522 <br />mg /L <br />0.0010 <br />104 <br />90 <br />110 <br />Iron <br />1.00 <br />mg /L <br />0.0010 <br />100 <br />90 <br />110 <br />Lead <br />0.0497 <br />mg /L <br />0.0010 <br />99 <br />90 <br />110 <br />Manganese <br />0.0518 <br />mg /L <br />0.0010 <br />104 <br />90 <br />110 <br />Thallium <br />0.0511 <br />mg /L <br />0.0010 <br />102 <br />90 <br />110 <br />Zinc <br />0.0537 <br />mg /L <br />0.0010 <br />107 <br />90 <br />110 <br />Method: <br />E200.8 <br />Batch: 38183 <br />Sample ID: <br />MB -38183 <br />7 Method Blank <br />Run: ICPMS4- C_130712A <br />07/13/13 12:50 <br />Antimony <br />0.0004 mg /L <br />0.0002 <br />Copper <br />00004 mg /L <br />0.0002 <br />Iron <br />0.009 mg /L <br />0.004 <br />Lead <br />0.0002 mg /L <br />4E -05 <br />Manganese <br />0.0002 mg /L <br />0.0001 <br />Thallium <br />ND mg /L <br />6E -05 <br />Zinc <br />ND mg /L <br />0.0006 <br />Sample ID: <br />LCS3 -38183 <br />7 Laboratory Control Sample <br />Run: ICPMS4- C_130712A <br />07/13/13 12:54 <br />Antimony <br />0.548 mg /L <br />0.0010 <br />110 <br />85 115 <br />Copper <br />0.530 mg /L <br />0.0050 <br />106 <br />85 115 <br />Iron <br />2.27 mg /L <br />0.030 <br />90 <br />85 115 <br />Lead <br />0.505 mg /L <br />0.0010 <br />101 <br />85 115 <br />Manganese <br />2.27 mg /L <br />0.0010 <br />91 <br />85 115 <br />Thallium <br />0.485 mg /L <br />0.00050 <br />97 <br />85 115 <br />Zinc <br />0.526 mg /L <br />0.010 <br />105 <br />85 115 <br />Sample ID: <br />C13070199- 001AMS3 <br />7 Sample Matrix Spike <br />Run: ICPMS4- C_130712A <br />07/13/13 13:58 <br />Antimony <br />0.539 mg /L <br />0.0010 <br />108 <br />70 130 <br />Copper <br />0.501 mg /L <br />0.0050 <br />98 <br />70 130 <br />Iron <br />8.96 mg /L <br />0.030 <br />86 <br />70 130 <br />Lead <br />0.536 mg /L <br />0.0010 <br />105 <br />70 130 <br />Manganese <br />2.44 mg /L <br />0.0010 <br />88 <br />70 130 <br />Thallium <br />0.508 mg /L <br />0.00050 <br />102 <br />70 130 <br />Zinc <br />0.470 mg /L <br />0.010 <br />90 <br />70 130 <br />Sample ID: <br />C13070199- 001AMSD3 <br />7 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_130712A <br />07/13/13 14:02 <br />Antimony <br />0.551 mg /L <br />0.0010 <br />110 <br />70 130 <br />2.1 <br />20 <br />Copper <br />0.516 mg /L <br />0.0050 <br />101 <br />70 130 <br />2.9 <br />20 <br />Iron <br />8.90 mg /L <br />0.030 <br />83 <br />70 130 <br />0.6 <br />20 <br />Lead <br />0.548 mg /L <br />0.0010 <br />107 <br />70 130 <br />2.1 <br />20 <br />Manganese <br />2.52 mg /L <br />0.0010 <br />91 <br />70 130 <br />3.3 <br />20 <br />Thallium <br />0.520 mg /L <br />0.00050 <br />104 <br />70 130 <br />2.3 <br />20 <br />Zinc <br />0.483 mg /L <br />0.010 <br />93 <br />70 130 <br />2.7 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 9 of 20 <br />