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• www.ewz4ab.com J Helena, MT 877- 472 -0711 • Billings, W 600 -735 -4489 • Casper, WY 888- 235 -0515 <br />f Aa>WME=+4laaar� 1131 Gillette, WY 866 -686 -7175 • Rapid City, SD 888- 672 -1225 a College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />06/06/13 <br />Project: Schwartz SW 05/08/13 <br />S26872 <br />Work Order: <br />013050363 <br />[Analyte <br />Count Result Units <br />R <br />° /.REC <br />Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E200.7 <br />Analytical Run: ICP4- C_130528A <br />Sample ID: <br />ICV <br />5 Initial Calibration Verification Standard <br />05/28/13 11:12 <br />Calcium <br />49.8 mg /L <br />0.50 <br />100 <br />95 <br />105 <br />Iron <br />5.06 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 />49.7 mg /L <br />0.50 <br />99 <br />95 <br />105 <br />Sodium <br />50.6 mg /L <br />0.50 <br />101 <br />95 <br />105 <br />Sample ID: <br />ICSA <br />5 Interference Check Sample A <br />05/28/13 11:26 <br />Calcium <br />456 mg /L <br />0.50 <br />91 <br />80 <br />120 <br />Iron <br />177 mg /L <br />0.030 <br />88 <br />80 <br />120 <br />Magnesium <br />497 mg /L <br />0.50 <br />99 <br />80 <br />120 <br />Potassium <br />0.0379 mg /L <br />0.50 <br />Sodium <br />-0.108 mg /L <br />0.50 <br />Sample ID: <br />ICSAB <br />5 Interference Check Sample AB <br />05/28/13 11:30 <br />Calcium <br />457 mg /L <br />0.50 <br />91 <br />80 <br />120 <br />Iron <br />180 mg /L <br />0.030 <br />90 <br />80 <br />120 <br />Magnesium <br />503 mg /L <br />0.50 <br />101 <br />80 <br />120 <br />Potassium <br />0.0180 mg /L <br />0.50 <br />Sodium <br />- 0.0962 mg /L <br />0.50 <br />Method: <br />E200.7 <br />Batch: R174106 <br />Sample ID: <br />MB- 130528A <br />5 Method Blank <br />Run: ICP4- C_130528A <br />05/28/13 11:49 <br />Calcium <br />ND mg /L <br />0.02 <br />Iron <br />ND mg /L <br />0.002 <br />Magnesium <br />0.04 mg /L <br />0.01 <br />Potassium <br />0.04 mg /L <br />0.04 <br />Sodium <br />ND mg /L <br />0.2 <br />Sample ID: <br />LFB- 130528A <br />5 Laboratory Fortified Blank <br />Run: ICP4- C_130528A <br />05/28/13 11:53 <br />Calcium <br />47.8 mg /L <br />0.50 <br />96 <br />85 <br />115 <br />Iron <br />0.958 mg /L <br />0.030 <br />96 <br />85 <br />115 <br />Magnesium <br />47.6 mg /L <br />0.50 <br />95 <br />85 <br />115 <br />Potassium <br />48.3 mg /L <br />0.50 <br />97 <br />85 <br />115 <br />Sodium <br />48.1 mg /L <br />0.50 <br />96 <br />85 <br />115 <br />Sample ID: <br />C13050315- 004BMS2 <br />5 Sample Matrix Spike <br />Run: ICP4- C_130528A <br />05/28/13 20:27 <br />Calcium <br />648 mg /L <br />1.0 <br />87 <br />70 <br />130 <br />Iron <br />4.84 mg /L <br />0.030 <br />95 <br />70 <br />130 <br />Magnesium <br />345 mg /L <br />1.0 <br />94 <br />70 <br />130 <br />Potassium <br />248 mg /L <br />1.0 <br />94 <br />70 <br />130 <br />Sodium <br />579 mg /L <br />1.0 <br />89 <br />70 <br />130 <br />Sample ID: <br />C13050315- 0041BMSD2 <br />5 Sample Matrix Spike Duplicate <br />Run: ICP4- C_130528A <br />05/28/13 20:31 <br />Calcium <br />650 mg /L <br />1.0 <br />88 <br />70 <br />130 0.3 <br />20 <br />Iron <br />4.86 mg /L <br />0 030 <br />95 <br />70 <br />130 0.3 <br />20 <br />Magnesium <br />347 mg /L <br />1.0 <br />95 <br />70 <br />130 0.5 <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 26 <br />