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\ www.NWBlab.com Helena, MT 877- 472 -0711 • Billings, MT 680- 735 -4489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 886 -686 -1175 • 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: <br />Project: <br />Cotter Corporation <br />Schwartz GW 5/23/2013 S26999 & S27000 <br />Report Date: <br />Work Order: <br />06/19/13 <br />C13050906 <br />Analyte <br />Count Result Units <br />RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.7 <br />Batch: 37652 <br />Sample ID: MB -37652 <br />4 Method Blank <br />Analytical Run ICP4- C_130611A <br />Sample ID: <br />ICV <br />5 Initial Calibration Verification Standard <br />003 mg /L <br />0.01 <br />06/11/13 12:10 <br />Aluminum <br />0 004 mg /L <br />4.97 mg /L <br />0.10 <br />99 <br />95 <br />105 <br />0.0002 <br />Iron <br />99 <br />4.90 mg /L <br />0.030 <br />98 <br />95 <br />105 <br />Sample ID: LCS3 -37652 <br />Manganese <br />70 130 <br />4.89 mg /L <br />0.010 <br />98 <br />95 <br />105 <br />110 <br />Potassium <br />Iron <br />473 mg /L <br />0.50 <br />95 <br />95 <br />105 <br />2.53 mg /L <br />Zinc <br />101 <br />0.981 mg /L <br />0.010 <br />98 <br />95 <br />105 <br />85 115 <br />Sample ID: <br />ICSA <br />5 Interference Check Sample A <br />0.0010 <br />102 <br />70 130 <br />22 <br />06/11/13 12:24 <br />Aluminum <br />0.503 mg /L <br />491 mg /L <br />0.10 <br />98 <br />80 <br />120 <br />Method: E200.7 <br />Iron <br />176 mg /L <br />0.030 <br />88 <br />80 <br />120 <br />Manganese <br />- 0.0184 mg /L <br />0.010 <br />Potassium <br />0.0309 mg /L <br />0.50 <br />Zinc <br />0.0191 mg /L <br />0.010 <br />Sample ID: <br />ICSAB <br />5 Interference Check Sample AB <br />06/11/13 12:28 <br />Aluminum <br />484 mg /L <br />0.10 <br />97 <br />80 <br />120 <br />Iron <br />175 mg /L <br />0.030 <br />88 <br />80 <br />120 <br />Manganese <br />0.438 mg /L <br />0.010 <br />88 <br />80 <br />120 <br />Potassium <br />0.0426 mg /L <br />0.50 <br />Zinc <br />0.860 mg /L <br />0.010 <br />86 <br />80 <br />120 <br />Method: E200.7 <br />4 Sample Matrix Spike <br />Batch: 37652 <br />Sample ID: MB -37652 <br />4 Method Blank <br />Aluminum <br />3.06 mg /L <br />Run: ICP4- C130611 A 06/11/13 18:39 <br />Aluminum <br />003 mg /L <br />0.01 <br />Iron <br />Iron <br />0 004 mg /L <br />0.004 <br />70 130 <br />Manganese <br />ND mg /L <br />0.0002 <br />0.0010 <br />99 <br />Zinc <br />0.001 mg /L <br />0.001 <br />Zinc <br />0.487 mg /L <br />Sample ID: LCS3 -37652 <br />4 Laboratory Control Sample <br />70 130 <br />Run: ICP4- C130611 A 06/11/13 18:42 <br />Aluminum <br />2.78 mg /L <br />0.030 <br />110 <br />85 115 <br />Iron <br />2.64 mg /L <br />0.030 <br />106 <br />85 115 <br />Manganese <br />2.53 mg /L <br />0.0010 <br />101 <br />85 115 <br />Zinc <br />0.500 mg /L <br />0.010 <br />100 <br />85 115 <br />Sample ID: C13050907- 001DMS3 <br />4 Sample Matrix Spike <br />Run: ICP4- C_130611A <br />06/11/13 1915 <br />Aluminum <br />3.06 mg /L <br />0.030 <br />107 <br />70 130 <br />Iron <br />2.80 mg /L <br />0.030 <br />103 <br />70 130 <br />Manganese <br />2.49 mg /L <br />0.0010 <br />99 <br />70 130 <br />Zinc <br />0.487 mg /L <br />0.010 <br />97 <br />70 130 <br />Sample ID: C13050907- 001DMSD3 <br />4 Sample Matrix Spike Duplicate <br />Run: ICP4- C_130611A <br />06/11/13 19:18 <br />Aluminum <br />2.97 mg /L <br />0.030 <br />104 <br />70 130 <br />3.0 <br />20 <br />Iron <br />2.85 mg /L <br />0.030 <br />105 <br />70 130 <br />2.0 <br />20 <br />Manganese <br />2.55 mg /L <br />0.0010 <br />102 <br />70 130 <br />22 <br />20 <br />Zinc <br />0.503 mg /L <br />0.010 <br />100 <br />70 130 <br />3.1 <br />20 <br />Method: E200.7 <br />Batch: R174676 <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 10 of 24 <br />