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• - www.erwalob.com Helena, MT 871 472 -0711 • Billings, MT 800 - 7354489 • Casper, WY 888- 235 -0515 <br />Awly"Exaft a'Ska trot Gillette, WY 866486 -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 Report Date: 02/26/14 <br />Project: Schwartz - GW 2/5/14 S27350 Work Order: C14020159 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />10 Interference Check Sample A <br />Analytical Run: ICP4- C_1 40210A <br />Sample ID: ICV <br />10 Initial Calibration Verification Standard <br />0.10 <br />95 <br />02/10/14 13:14 <br />Aluminum <br />5.03 <br />mg /L <br />0.10 <br />101 <br />95 <br />105 <br />Calcium <br />50.2 <br />mg /L <br />0.50 <br />100 <br />95 <br />105 <br />Iron <br />5.01 <br />mg /L <br />0.030 <br />100 <br />95 <br />105 <br />Magnesium <br />50.2 <br />mg /L <br />0.50 <br />100 <br />95 <br />105 <br />Manganese <br />4.86 <br />mg /L <br />0.010 <br />97 <br />95 <br />105 <br />Molybdenum <br />0.988 <br />mg /L <br />0.10 <br />99 <br />95 <br />105 <br />Potassium <br />49.2 <br />mg /L <br />0.50 <br />98 <br />95 <br />105 <br />Sodium <br />50.2 <br />mg /L <br />0.50 <br />100 <br />95 <br />105 <br />Uranium <br />506 <br />mg /L <br />1.0 <br />101 <br />95 <br />105 <br />Zinc <br />0.959 <br />mg /L <br />0.010 <br />96 <br />95 <br />105 <br />Sample ID: ICSA <br />10 Interference Check Sample A <br />02/10/14 13:28 <br />Aluminum <br />474 mg /L <br />0.10 <br />95 <br />80 <br />120 <br />Calcium <br />450 mg /L <br />0.50 <br />90 <br />80 <br />120 <br />Iron <br />171 mg /L <br />0.030 <br />85 <br />80 <br />120 <br />Magnesium <br />487 mg /L <br />0.50 <br />97 <br />80 <br />120 <br />Manganese <br />- 0.00240 mg /L <br />0.010 <br />Molybdenum <br />- 0.00410 mg /L <br />0.10 <br />Potassium <br />0.0339 mg /L <br />0.50 <br />Sodium <br />-0457 mg /L <br />0.50 <br />Uranium <br />0.0142 mg /L <br />1.0 <br />Zinc <br />- 0.00110 mg /L <br />0.010 <br />Sample ID: ICSAB <br />10 Interference Check Sample AB <br />02/10/14 13:32 <br />Aluminum <br />472 mg /L <br />0.10 <br />94 <br />80 <br />120 <br />Calcium <br />451 mg /L <br />0.50 <br />90 <br />80 <br />120 <br />Iron <br />171 mg /L <br />0.030 <br />86 <br />80 <br />120 <br />Magnesium <br />488 mg /L <br />0.50 <br />98 <br />80 <br />120 <br />Manganese <br />0.430 mg /L <br />0.010 <br />86 <br />80 <br />120 <br />Molybdenum <br />0.00268 mg /L <br />0.10 <br />Potassium <br />0.0232 mg /L <br />0.50 <br />Sodium <br />-0.613 mg /L <br />0.50 <br />Uranium <br />- 0.0122 mg /L <br />1.0 <br />Zinc <br />0.818 mg /L <br />0.010 <br />82 <br />80 <br />120 <br />Method: E200.7 <br />Batch: R183509 <br />Sample ID: MB- 140210A <br />10 Method Blank <br />Run. ICP4- C_140210A <br />02/10/14 13:50 <br />Aluminum <br />ND mg /L <br />0.009 <br />Calcium <br />ND mg /L <br />0.02 <br />Iron <br />ND mg /L <br />0.002 <br />Magnesium <br />0.06 mg /L <br />0.01 <br />Manganese <br />ND mg /L <br />0.0010 <br />Molybdenum <br />ND mg /L <br />0.003 <br />Potassium <br />ND mg /L <br />0.04 <br />Sodium <br />ND mg /L <br />0.2 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 8 of 20 <br />