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www.mwosb.com Helena, MT 817- 472 -0711 • Billings, W 800 - 735 -4409 • Casper, WY 888 -235 -8515 <br />bmille ' Am lei Gillette, WY 866 -686 -7175 • Rapid City, SO 888 -672 -1225 • 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 />06/18/13 <br />Project: Schwartz GW 5/15/2013 <br />S26920 & S26921 <br />Work Order: <br />C13050697 <br />Analyte Count Result <br />Units <br />RL <br />%REC <br />Low Limit <br />High Limit <br />RPD <br />RPDLimit Qual <br />Method: E200.8 <br />Batch: R174037 <br />Sample ID: C13050697 -001 CMS4 <br />13 Sample Matrix Spike <br />Run: ICPMS4- C_130524A <br />05/24/13 12:52 <br />Aluminum <br />0.0528 <br />mg /L <br />0.030 <br />104 <br />70 <br />130 <br />Antimony <br />0.0589 <br />mg /L <br />0.0010 <br />118 <br />70 <br />130 <br />Calcium <br />55.7 <br />mg /L <br />1.0 <br />91 <br />70 <br />130 <br />Copper <br />0.0526 <br />mg /L <br />0.0050 <br />105 <br />70 <br />130 <br />Iron <br />1.27 <br />mg /L <br />0.030 <br />99 <br />70 <br />130 <br />Magnesium <br />26.1 <br />mg /L <br />1.0 <br />103 <br />70 <br />130 <br />Manganese <br />0.792 <br />mg /L <br />0.0010 <br />70 <br />130 <br />A <br />Molybdenum <br />0.200 <br />mg /L <br />0.0010 <br />106 <br />70 <br />130 <br />Potassium <br />18.5 <br />mg /L <br />1.0 <br />99 <br />70 <br />130 <br />Sodium <br />48.8 <br />mg /L <br />1.0 <br />106 <br />70 <br />130 <br />Thallium <br />0.0544 <br />mg /L <br />0.00050 <br />109 <br />70 <br />130 <br />Uranium <br />0.0991 <br />mg /L <br />0.00030 <br />116 <br />70 <br />130 <br />Zinc <br />0.0563 <br />mg /L <br />0.010 <br />110 <br />70 <br />130 <br />Sample ID: C13050697 -001 CMSD4 <br />13 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_130524A <br />05/24/13 12:55 <br />Aluminum <br />0.0536 <br />mg /L <br />0.030 <br />106 <br />70 <br />130 <br />1.4 <br />20 <br />Antimony <br />0.0584 <br />mg /L <br />0.0010 <br />117 <br />70 <br />130 <br />0.9 <br />20 <br />Calcium <br />55.7 <br />mg /L <br />1.0 <br />91 <br />70 <br />130 <br />0.1 <br />20 <br />Copper <br />0.0521 <br />mg /L <br />0.0050 <br />104 <br />70 <br />130 <br />08 <br />20 <br />Iron <br />1.25 <br />mg /L <br />0.030 <br />98 <br />70 <br />130 <br />1.6 <br />20 <br />Magnesium <br />25.6 <br />mg /L <br />1.0 <br />100 <br />70 <br />130 <br />1.7 <br />20 <br />Manganese <br />0.797 <br />mg /L <br />0.0010 <br />70 <br />130 <br />0.6 <br />20 A <br />Molybdenum <br />0.199 <br />mg /L <br />0.0010 <br />103 <br />70 <br />130 <br />0.7 <br />20 <br />Potassium <br />18.2 <br />mg /L <br />1.0 <br />96 <br />70 <br />130 <br />1.6 <br />20 <br />Sodium <br />48.3 <br />mg /L <br />1.0 <br />102 <br />70 <br />130 <br />1.1 <br />20 <br />Thallium <br />0.0540 <br />mg /L <br />0.00050 <br />108 <br />70 <br />130 <br />0.8 <br />20 <br />Uranium <br />0.0983 <br />mg /L <br />0.00030 <br />114 <br />70 <br />130 <br />0.9 <br />20 <br />Zinc <br />0.0565 <br />mg /L <br />0.010 <br />110 <br />70 <br />130 <br />0.5 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />ND - Not detected at the reporting limit. <br />A - The analyte level was greater than four times the spike level. In <br />accordance with the method % recovery is not calculated. <br />MDC - Minimum detectable concentration <br />Page 11 of 24 <br />