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\ c www.ewgylab.com ( Helena, W 877 -472 -0711 • Billings, MT 600 - 735-4418 - Casper, WY 888 - 235 -0515 <br />G AufAcd E=ab= RX& IN J Gillette, WY 866 -666 -7175 - Rapid City, SO 881 -672 -1225 - College Station, rn 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/29/14 <br />Project: Schwartz -SW 12/1/14 S27813 and S27815 Work Order: C14120088 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E200.8 <br />Batch: 43371 <br />Lab ID: MB -43371 <br />11 Method Blank <br />Run: ICPMS2- C_141205A <br />12/05/14 19:16 <br />Lead <br />0.0007 <br />mg /L <br />3E -05 <br />Manganese <br />0.0001 <br />mg /L <br />7E -05 <br />Molybdenum <br />ND <br />mg /L <br />8E -05 <br />Silver <br />5E -05 <br />mg /L <br />2E -05 <br />Thallium <br />ND <br />mg /L <br />0.0001 <br />Zinc <br />0.0010 <br />mg /L <br />0.0005 <br />Lab ID: LCS3 -43371 <br />11 Laboratory Control <br />Sample <br />Run: ICPMS2- C_141205A <br />12/05/14 19:20 <br />Aluminum <br />2.59 <br />mg /L <br />0.030 104 85 <br />115 <br />Antimony <br />0.548 <br />mg /L <br />0.0010 110 85 <br />115 <br />Arsenic <br />0.504 <br />mg /L <br />0.0010 101 85 <br />115 <br />Chromium <br />0.520 <br />mg /L <br />0.0050 104 85 <br />115 <br />Copper <br />0.496 <br />mg /L <br />0.0050 99 85 <br />115 <br />Lead <br />0.535 <br />mg /L <br />0.0010 107 85 <br />115 <br />Manganese <br />2.59 <br />mg /L <br />0.0010 104 85 <br />115 <br />Molybdenum <br />0.543 <br />mg /L <br />0.0010 109 85 <br />115 <br />Silver <br />0.0516 <br />mg /L <br />0.0010 103 85 <br />115 <br />Thallium <br />0.498 <br />mg /L <br />0.00050 100 85 <br />115 <br />Zinc <br />0.510 <br />mg /L <br />0.010 102 85 <br />115 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 12 of 25 <br />