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www.er-erdab.com Helena, W 877- 472 -0711 • Billings, Mt 800- 7354488 • Casper, WY 888 -235 -0515 <br />Mao" Excalkwa Ske' 102 Gillette, WY 866 -666 -7175 • Rapid City, SD 886- 672 -1225 • College Station, Tx 888 -696 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/30/14 <br />Project: Schwartz -GW 09/04/14 S27679 Work Order: 014090400 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.7 <br />Batch: R190996 <br />Lab ID: LFB- 140911A <br />8 Laboratory Fortified Blank <br />Run: ICP4- C_140911A <br />09/11/14 15:08 <br />Manganese <br />0.917 <br />mg /L <br />0.010 <br />92 <br />85 <br />115 <br />Molybdenum <br />0.926 <br />mg /L <br />0.10 <br />93 <br />85 <br />115 <br />Potassium <br />51.5 <br />mg /L <br />0.50 <br />103 <br />85 <br />115 <br />Sodium <br />49.3 <br />mg /L <br />0.50 <br />99 <br />85 <br />115 <br />Lab ID: C14090335- 003CMS2 <br />8 Sample Matrix Spike <br />Run: ICP4- C140911 A <br />09/11/14 19:43 <br />Aluminum <br />1.85 <br />mg /L <br />0.030 <br />91 <br />70 <br />130 <br />Calcium <br />256 <br />mg /L <br />1.0 <br />86 <br />70 <br />130 <br />Iron <br />2.05 <br />mg /L <br />0.030 <br />92 <br />70 <br />130 <br />Magnesium <br />104 <br />mg /L <br />1.0 <br />92 <br />70 <br />130 <br />Manganese <br />1.93 <br />mg /L <br />0.0031 <br />89 <br />70 <br />130 <br />Molybdenum <br />1.83 <br />mg /L <br />0.015 <br />90 <br />70 <br />130 <br />Potassium <br />93.6 <br />mg /L <br />1.0 <br />88 <br />70 <br />130 <br />Sodium <br />138 <br />mg /L <br />1.0 <br />89 <br />70 <br />130 <br />Lab ID: C14090335- 003CMSD <br />8 Sample Matrix <br />Spike Duplicate <br />Run: ICP4- <br />C_140911A <br />09/11/14 19:47 <br />Aluminum <br />1.87 <br />mg /L <br />0.030 <br />91 <br />70 <br />130 0.7 <br />20 <br />Calcium <br />256 <br />mg /L <br />1.0 <br />87 <br />70 <br />130 0.1 <br />20 <br />Iron <br />2.04 <br />mg /L <br />0.030 <br />92 <br />70 <br />130 0.2 <br />20 <br />Magnesium <br />104 <br />mg /L <br />1.0 <br />92 <br />70 <br />130 0.1 <br />20 <br />Manganese <br />1.93 <br />mg /L <br />0.0031 <br />89 <br />70 <br />130 0.1 <br />20 <br />Molybdenum <br />1.84 <br />mg /L <br />0.015 <br />90 <br />70 <br />130 0.5 <br />20 <br />Potassium <br />92.9 <br />mg /L <br />1.0 <br />88 <br />70 <br />130 0.7 <br />20 <br />Sodium <br />137 <br />mg /L <br />1.0 <br />88 <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 9 of 21 <br />