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www.er*rdab.com Helena, MT 877 -472 -0711 - Billings, W 600 -135 -4489 - Casper, WY 888- 235 -0515 <br />Auty"EwalilwaSk"IM J Gillette, WY 066 -086 -7175 - 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: Cotter Corporation Report Date: 07/08/13 <br />Project: Schwartz SW 6/5/2013 S26940 Work Order: C13060211 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />Analytical Run: ICP4- C_130612A <br />Sample ID: ICV <br />6 Initial Calibration Verification Standard <br />06/12/13 11:07 <br />Aluminum <br />4.90 mg /L <br />0.10 <br />98 <br />95 <br />105 <br />Boron <br />0.997 mg /L <br />0.10 <br />100 <br />95 <br />105 <br />Iron <br />4.93 mg /L <br />0.030 <br />99 <br />95 <br />105 <br />Manganese <br />4.78 mg /L <br />0.010 <br />96 <br />95 <br />105 <br />Molybdenum <br />0.961 mg /L <br />0.10 <br />96 <br />95 <br />105 <br />Zinc <br />0.965 mg /L <br />0.010 <br />97 <br />95 <br />105 <br />Sample ID: ICSA <br />6 Interference Check Sample A <br />6 Laboratory Control <br />Sample <br />06/12/13 11:21 <br />Aluminum <br />475 mg /L <br />0.10 <br />95 <br />80 <br />120 <br />85 115 <br />Boron <br />0.00302 mg /L <br />0.10 <br />mg /L <br />0.050 <br />98 <br />85 115 <br />Iron <br />176 mg /L <br />0.030 <br />88 <br />80 <br />120 <br />85 115 <br />Manganese <br />- 0.0172 mg /L <br />0.010 <br />mg /L <br />0.0010 <br />96 <br />85 115 <br />Molybdenum <br />- 0.00164 mg /L <br />0.10 <br />mg /L <br />0.0028 <br />98 <br />85 115 <br />Zinc <br />0.0164 mg /L <br />0.010 <br />mg /L <br />0.010 <br />95 <br />85 115 <br />Sample ID: ICSAB <br />6 Interference Check Sample AB <br />6 Sample Matrix Spike <br />Run: ICP4- C_130612A <br />06/12/13 11:25 <br />Aluminum <br />491 mg /L <br />0.10 <br />98 <br />80 <br />120 <br />Boron <br />0.0108 mg /L <br />010 <br />0.050 <br />100 <br />70 130 <br />Iron <br />184 mg /L <br />0.030 <br />92 <br />80 <br />120 <br />Manganese <br />0.440 mg /L <br />0.010 <br />88 <br />80 <br />120 <br />Molybdenum <br />0.00943 mg /L <br />0.10 <br />0.0028 <br />98 <br />70 130 <br />Zinc <br />0.865 mg /L <br />0.010 <br />86 <br />80 <br />120 <br />Method: E200.7 <br />Batch: 37828 <br />Sample ID: MB -37828 <br />6 Method Blank <br />Run: ICP4- C_130612A <br />06/12/13 13:35 <br />Aluminum <br />0.02 <br />mg /L <br />0.01 <br />Boron <br />0.005 <br />mg /L <br />0.003 <br />Iron <br />0.02 <br />mg /L <br />0.004 <br />Manganese <br />0.0007 <br />mg /L <br />0.0002 <br />Molybdenum <br />ND <br />mg /L <br />0.003 <br />Zinc <br />0.002 <br />mg /L <br />0.001 <br />Sample ID: LCS3 -37828 <br />6 Laboratory Control <br />Sample <br />Run: ICP4- C_130612A <br />06/12/13 13:39 <br />Aluminum <br />248 <br />mg /L <br />0.030 <br />98 <br />85 115 <br />Boron <br />0.495 <br />mg /L <br />0.050 <br />98 <br />85 115 <br />Iron <br />2.50 <br />mg /L <br />0.030 <br />99 <br />85 115 <br />Manganese <br />2.41 <br />mg /L <br />0.0010 <br />96 <br />85 115 <br />Molybdenum <br />0.492 <br />mg /L <br />0.0028 <br />98 <br />85 115 <br />Zinc <br />0.475 <br />mg /L <br />0.010 <br />95 <br />85 115 <br />Sample ID: C13060211- 001EMS3 <br />6 Sample Matrix Spike <br />Run: ICP4- C_130612A <br />06/12/13 15:26 <br />Aluminum <br />2.61 <br />mg /L <br />0.030 <br />103 <br />70 130 <br />Boron <br />0.515 <br />mg /L <br />0.050 <br />100 <br />70 130 <br />Iron <br />2.58 <br />mg /L <br />0.030 <br />101 <br />70 130 <br />Manganese <br />2.45 <br />mg /L <br />0.0010 <br />98 <br />70 130 <br />Molybdenum <br />0.491 <br />mg /L <br />0.0028 <br />98 <br />70 130 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - <br />Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 10 of 27 <br />