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• IFFMW www.ewdab.com � Helena, W 877- 472 -0711 • Billings, MY B00- 735 -4489 • Casper, WY 888- 235 -0515 <br />A#~EWAWMMW1W2 Gillette, WY 866 -686 -7175 • Rapid City, so 888 -672 -1225 • College station, TX 888 -698 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 06/11/13 <br />Project: Schwartz GW 05/18/13 S26985 & S26986 Work Order: 013050721 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />7 <br />Interference Check Sample AB <br />Analytical Run: ICP4- C_130604A <br />Sample ID: ICV <br />7 Initial Calibration Verification Standard <br />486 mg /L <br />06/04/13 13:30 <br />Aluminum <br />4.95 mg /L <br />0.10 <br />99 <br />95 <br />105 <br />Calcium <br />49.7 mg /L <br />0.50 <br />99 <br />95 <br />105 <br />Iron <br />5.03 mg /L <br />0.030 <br />101 <br />95 <br />105 <br />Magnesium <br />49.7 mg /L <br />0.50 <br />99 <br />95 <br />105 <br />Potassium <br />48.7 mg /L <br />0.50 <br />97 <br />95 <br />105 <br />Sodium <br />50.1 mg /L <br />0.50 <br />100 <br />95 <br />105 <br />Zinc <br />0.983 mg /L <br />0.010 <br />98 <br />95 <br />105 <br />Sample ID: ICSA <br />7 Interference Check Sample A <br />Method: E200.7 <br />06/04/13 13 :45 <br />Aluminum <br />489 mg /L <br />0.10 <br />98 <br />80 <br />120 <br />Calcium <br />451 mg /L <br />0.50 <br />90 <br />80 <br />120 <br />Iron <br />177 mg /L <br />0.030 <br />88 <br />80 <br />120 <br />Magnesium <br />492 mg /L <br />0.50 <br />98 <br />80 <br />120 <br />Potassium <br />- 0.0238 mg /L <br />0.50 <br />0.002 mg /L <br />0.001 <br />Sodium <br />0.253 mg /L <br />0.50 <br />3 <br />Laboratory Control Sample <br />Zinc <br />0.0160 mg /L <br />0.010 <br />Aluminum <br />2.58 mg /L <br />Sample ID: ICSAB <br />7 <br />Interference Check Sample AB <br />06/04/13 13:49 <br />Aluminum <br />486 mg /L <br />0.10 <br />97 <br />80 120 <br />Calcium <br />453 mg /L <br />0.50 <br />91 <br />80 120 <br />Iron <br />175 mg /L <br />0.030 <br />87 <br />80 120 <br />Magnesium <br />491 mg /L <br />0.50 <br />98 <br />80 120 <br />Potassium <br />- 0.0374 mg /L <br />0.50 <br />Sodium <br />0.603 mg /L <br />0.50 <br />Zinc <br />0.855 mg /L <br />0.010 <br />85 <br />80 120 <br />Method: E200.7 <br />Batch: 37571 <br />Sample ID: MB -37571 <br />3 <br />Method Blank <br />Run: ICP4- C_130604A <br />06/04/13 20:23 <br />Aluminum <br />ND mg /L <br />0.01 <br />Iron <br />ND mg /L <br />0.004 <br />Zinc <br />0.002 mg /L <br />0.001 <br />Sample ID: LCS3 -37571 <br />3 <br />Laboratory Control Sample <br />Run: ICP4- C_130604A <br />06/04/13 20:38 <br />Aluminum <br />2.58 mg /L <br />0.030 <br />103 <br />85 115 <br />Iron <br />2.54 mg /L <br />0.030 <br />102 <br />85 115 <br />Zinc <br />0.483 mg /L <br />0.010 <br />96 <br />85 115 <br />Sample ID: C13050708- 002DMS3 <br />3 <br />Sample Matrix Spike <br />Run: ICP4- C_130604A <br />06/04/13 20:53 <br />Aluminum <br />2.71 mg /L <br />0.030 <br />108 <br />70 130 <br />Iron <br />3.39 mg /L <br />0.030 <br />102 <br />70 130 <br />Zinc <br />0.481 mg /L <br />0.010 <br />96 <br />70 130 <br />Sample ID: C13050708- 002DMSD <br />3 <br />Sample Matrix Spike Duplicate <br />Run: ICP4- C_130604A <br />06/04/13 20:56 <br />Aluminum <br />2.66 mg /L <br />0.030 <br />106 <br />70 130 1.7 <br />20 <br />Iron <br />3.35 mg /L <br />0.030 <br />101 <br />70 130 1.1 <br />20 <br />Zinc <br />0.475 mg /L <br />0.010 <br />95 <br />70 130 1.2 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 24 <br />