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• www.mwgoab.com ( Helena, MT 877- 472 -0711 • Billings, MT 800 -735 -4489 a Casper, WY 888 - 235 -0515 <br />t ' 1°• 'tact J Gillette, WY 866 -606 -7175 • Rapid City, SD 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 />E200.7 <br />Report Date: <br />07/16/13 <br />Project: Schwartz GW 6/23/13 <br />S26948 <br />Method Blank <br />Work Order: <br />C13060891 <br />Analyte <br />Count Result Units RL <br />0/J9EC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.7 <br />LCS3 -38010 <br />Laboratory Control Sample <br />Analytical Run: ICP4- C_130627A <br />Sample ID: ICV <br />Initial Calibration Verification Standard <br />2.55 mg /L <br />0.030 <br />06/27/13 11:22 <br />Iron <br />4.98 mg /L 0 030 <br />100 <br />95 <br />105 <br />Run: ICP4- C_130627A <br />Sample ID: ICSA <br />Interference Check Sample A <br />2.5 mg /L <br />0.030 <br />06/27/13 11:37 <br />Iron <br />176 mg /L 0.030 <br />88 <br />80 <br />120 <br />Run: ICP4- C_130627A <br />Sample ID: ICSAB <br />Interference Check Sample AB <br />2.5 mg /L <br />0 030 <br />06/27/13 11:41 <br />Iron <br />178 mg /L 0.030 <br />89 <br />80 <br />120 <br />Method: <br />E200.7 <br />Batch: 38010 <br />Sample ID: <br />MB -38010 <br />Method Blank <br />Run: ICP4- C_130627A <br />06/27/13 21:44 <br />Iron <br />ND mg /L <br />0.004 <br />Sample ID: <br />LCS3 -38010 <br />Laboratory Control Sample <br />Run: ICP4- C_130627A <br />06/27/13 21:48 <br />Iron <br />2.55 mg /L <br />0.030 <br />102 85 115 <br />Sample ID: <br />C13060878 -001 BMS3 <br />Sample Matrix Spike <br />Run: ICP4- C_130627A <br />06/27/13 22:39 <br />Iron <br />2.5 mg /L <br />0.030 <br />100 70 130 <br />Sample lD: <br />C13060878 -001 BMSD3 <br />Sample Matrix Spike Duplicate <br />Run: ICP4- C_130627A <br />06/27/13 22:43 <br />Iron <br />2.5 mg /L <br />0 030 <br />100 70 130 <br />0.7 20 <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 7 of 20 <br />