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www.en rgylab.com Helena, MT 877 -472 -0711 - Billings, W 600- 735 -4489 - Casper, WY 888- 235 -8515 <br />o AearytkalFrae' on'smr, t rst Gillette, WY 866 -806 -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 <br />Run: ICP4- C_130603A <br />Method: <br />E200.7 <br />Report Date: <br />06/06/13 <br />Project: Schwartz GW 5/15/13 S26918 & S26919 <br />4 Method Blank <br />Calcium <br />95 <br />Work Order: <br />C13050708 <br />Analyte <br />Count Result Units <br />RL <br />%REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E200.7 <br />Sample ID: <br />LFB- 130603A <br />4 Laboratory Fortified Blank <br />Calcium <br />Analytical Run: ICP4- C_130603A <br />Sample ID: ICV <br />4 Initial Calibration Verification Standard <br />81 <br />0.949 mg /L <br />Magnesium <br />06/03/13 12:52 <br />Calcium <br />50.0 mg /L <br />0.50 <br />100 <br />95 <br />105 <br />4 Sample Matrix Spike <br />Iron <br />5.12 mg /L <br />0.030 <br />102 <br />95 <br />105 <br />Magnesium <br />Magnesium <br />50.0 mg /L <br />0.50 <br />100 <br />95 <br />105 <br />C13050695- 014CMSD2 <br />Sodium <br />51.0 mg /L <br />0.50 <br />102 <br />95 <br />105 <br />1.92 mg /L <br />Sample ID: ICSA <br />4 Interference Check Sample A <br />95.2 mg /L <br />Sodium <br />143 mg /L <br />06/03/13 13:06 <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 />89 <br />80 <br />120 <br />Magnesium <br />492 mg /L <br />0.50 <br />98 <br />80 <br />120 <br />Sodium <br />0.0208 mg /L <br />0.50 <br />Sample ID: ICSAB <br />4 Interference Check Sample AB <br />06/03/13 13:10 <br />Calcium <br />452 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 />494 mg /L <br />0.50 <br />99 <br />80 <br />120 <br />Sodium <br />-0.131 mg /L <br />0.50 <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />Run: ICP4- C_130603A <br />0.02 <br />0.002 <br />0.01 <br />0.2 <br />Run: ICP4- C_130603A <br />Method: <br />E200.7 <br />85 115 <br />Sample ID: <br />MB- 130603A <br />4 Method Blank <br />Calcium <br />95 <br />ND mg /L <br />Iron <br />94 <br />ND mg /L <br />Magnesium <br />ND mg /L <br />Sodium <br />92 <br />ND mg /L <br />Sample ID: <br />LFB- 130603A <br />4 Laboratory Fortified Blank <br />Calcium <br />93 <br />47.3 mg /L <br />Iron <br />81 <br />0.949 mg /L <br />Magnesium <br />47.5 mg /L <br />Sodium <br />92 <br />46.8 mg /L <br />Sample ID: <br />C13050695- 014CMS2 <br />4 Sample Matrix Spike <br />Calcium <br />93 <br />96.2 mg /L <br />Iron <br />81 <br />1.91 mg /L <br />Magnesium <br />95.1 mg /L <br />Sodium <br />143 mg /L <br />Sample ID: <br />C13050695- 014CMSD2 <br />4 Sample Matrix Spike Duplicate <br />Calcium <br />96.5 mg /L <br />Iron <br />1.92 mg /L <br />Magnesium <br />95.2 mg /L <br />Sodium <br />143 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit <br />MDC - Minimum detectable concentration <br />Run: ICP4- C_130603A <br />0.02 <br />0.002 <br />0.01 <br />0.2 <br />ND - Not detected at the reporting limit. <br />0.3 <br />0.4 <br />0.1 <br />0.0 <br />Batch: R174338 <br />06/03/13 13:29 <br />06/03/13 13:32 <br />06/03/13 22:40 <br />06/03/13 22:44 <br />20 <br />20 <br />20 <br />20 <br />Page 9 of 25 <br />Run: ICP4- C_130603A <br />0.50 <br />95 <br />85 115 <br />0.030 <br />95 <br />85 115 <br />0.50 <br />95 <br />85 115 <br />0.50 <br />94 <br />85 115 <br />Run•ICP4- C_130603A <br />1.0 <br />92 <br />70 130 <br />0.030 <br />90 <br />70 130 <br />1.0 <br />93 <br />70 130 <br />1.0 <br />81 <br />70 130 <br />Run: ICP4- C_130603A <br />1.0 <br />92 <br />70 130 <br />0.030 <br />91 <br />70 130 <br />1.0 <br />93 <br />70 130 <br />1.0 <br />81 <br />70 130 <br />ND - Not detected at the reporting limit. <br />0.3 <br />0.4 <br />0.1 <br />0.0 <br />Batch: R174338 <br />06/03/13 13:29 <br />06/03/13 13:32 <br />06/03/13 22:40 <br />06/03/13 22:44 <br />20 <br />20 <br />20 <br />20 <br />Page 9 of 25 <br />