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\ www.e w#sb.com � Helena, MT 877-472 -0711 - Billings, MT 800 -735 -4189 - Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -686 -7175 - Rapid City, SO 886- 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 />06/13/13 <br />Project: Schwartz GW 5/20/13 S26987 & S26988 <br />Work <br />Order: <br />013050760 <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: 37595 <br />Sample ID: C13050737- 001CMS3 <br />10 Sample Matrix Spike <br />Run: ICPMS4- C_130524A <br />05/25/13 00:09 <br />Thallium <br />0.506 <br />mg /L <br />0.00050 <br />101 <br />70 <br />130 <br />Zinc <br />0.497 <br />mg /L <br />0.010 <br />99 <br />70 <br />130 <br />Sample ID: C13050737- 001CMSD3 <br />10 Sample Matrix Spike Duplicate <br />Run: ICPMS4- C_130524A <br />05/25/13 00:30 <br />Aluminum <br />2.48 <br />mg /L <br />0.030 <br />93 <br />70 <br />130 <br />0.6 <br />20 <br />Antimony <br />0.541 <br />mg /L <br />0.0010 <br />108 <br />70 <br />130 <br />0.7 <br />20 <br />Arsenic <br />0.502 <br />mg /L <br />0.0010 <br />100 <br />70 <br />130 <br />1.3 <br />20 <br />Copper <br />0.467 <br />mg /L <br />0.0050 <br />93 <br />70 <br />130 <br />0.0 <br />20 <br />Iron <br />2.53 <br />mg /L <br />0.030 <br />97 <br />70 <br />130 <br />2.3 <br />20 <br />Lead <br />0.504 <br />mg /L <br />0.0010 <br />101 <br />70 <br />130 <br />2.8 <br />20 <br />Manganese <br />2.53 <br />mg /L <br />0.0010 <br />101 <br />70 <br />130 <br />2.7 <br />20 <br />Silver <br />00497 <br />mg /L <br />0.0010 <br />99 <br />70 <br />130 <br />0.1 <br />20 <br />Thallium <br />0.492 <br />mg /L <br />0.00050 <br />98 <br />70 <br />130 <br />2.8 <br />20 <br />Zinc <br />0.493 <br />mg /L <br />0.010 <br />98 <br />70 <br />130 <br />0.8 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 14 of 24 <br />