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• www.erwdab.com � Helena, W 877 -472 -0711 • Billings, MT 600 - 7354489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 - 686 -7175 • Rapid City, SG 886 -672 -1225 • College Station, TX 888- 696 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />10/02/13 <br />Project: Schwartz SW 9/5/13 S27130 <br />Work Order: <br />C13090203 <br />Analyte Count Result Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.7 <br />Analytical Run: ICP4- C_130911A <br />Sample ID: ICV <br />2 <br />Initial Calibration Verification Standard <br />09/11/13 14:43 <br />Boron <br />0 983 mg /L <br />0.10 <br />98 <br />95 <br />105 <br />Iron <br />4.88 mg /L <br />0.030 <br />98 <br />95 <br />105 <br />Sample ID: ICSA <br />2 <br />Interference Check Sample A <br />09/11/13 14:58 <br />Boron <br />0.0128 mg /L <br />0.10 <br />Iron <br />172 mg /L <br />0.030 <br />86 <br />80 <br />120 <br />Sample ID: ICSAB <br />2 <br />Interference Check Sample AB <br />09/11/13 15:02 <br />Boron <br />0.0119 mg /L <br />0.10 <br />Iron <br />173 mg /L <br />0.030 <br />86 <br />80 <br />120 <br />Method: E200.7 <br />Batch: 38960 <br />Sample ID: MB -38960 <br />2 <br />Method Blank <br />Run: ICP4- C_130911A <br />09/11/13 17:24 <br />Boron <br />ND mg /L <br />0.002 <br />Iron <br />ND mg /L <br />0.002 <br />Sample ID: LCS3 -38960 <br />2 <br />Laboratory Control Sample <br />Run: ICP4- C130911 A <br />09/11/13 18:08 <br />Boron <br />0.52 mg /L <br />0.10 <br />104 <br />85 <br />115 <br />Iron <br />2.6 mg /L <br />0.030 <br />104 <br />85 <br />115 <br />Sample ID: C13090193- 005AMS3 <br />2 <br />Sample Matrix Spike <br />Run: ICP4- C_130911A <br />09/11/13 18:23 <br />Boron <br />0.58 mg /L <br />0.10 <br />101 <br />70 <br />130 <br />Iron <br />2.6 mg /L <br />0.030 <br />102 <br />70 <br />130 <br />Sample ID: C13090193- 005AMSD <br />2 <br />Sample Matrix Spike Duplicate <br />Run: ICP4- C_130911A <br />09/11/13 18:26 <br />Boron <br />0.58 mg /L <br />0.10 <br />100 <br />70 <br />130 0.9 <br />20 <br />Iron <br />2.6 mg /L <br />0.030 <br />102 <br />70 <br />130 0.4 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 10 of 25 <br />