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WWWJ a &sb.com Helena, W 877472 -0711 • Billings, MT 880- 735 -4469 a Casper, WY 888 - 235 -8515 <br />Gillette, W 886486 -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 <br />Report Date: <br />10/15/13 <br />Project: Schwartz SW 9/10/13 S27157 <br />Work Order: <br />013090392 <br />Analyte Count Result <br />Units <br />RL <br />° /.REC <br />Low Limit <br />High Limit <br />RPD <br />RPDLimit Qual <br />Method: E200.7 <br />Batch: 39022 <br />Sample ID: 013090392 -001 DMS3 <br />6 Sample Matrix Spike <br />Run: ICP4- C_130916A <br />09/16/13 17:00 <br />Zinc <br />0.492 <br />mg /L <br />0.010 <br />95 <br />70 <br />130 <br />Sample ID: C13090392- 001DMSD3 <br />6 Sample Matrix Spike Duplicate <br />Run: ICP4- C_130916A <br />09/16/13 17:03 <br />Aluminum <br />3.73 <br />mg /L <br />0.030 <br />103 <br />70 <br />130 <br />4.1 <br />20 <br />Boron <br />0.509 <br />mg /L <br />0.050 <br />97 <br />70 <br />130 <br />2.2 <br />20 <br />Iron <br />4.09 <br />mg /L <br />0.030 <br />87 <br />70 <br />130 <br />2.2 <br />20 <br />Manganese <br />2.52 <br />mg /L <br />0.0010 <br />97 <br />70 <br />130 <br />1.0 <br />20 <br />Molybdenum <br />0.494 <br />mg /L <br />0.0028 <br />98 <br />70 <br />130 <br />0.7 <br />20 <br />Zinc <br />0.488 <br />mg /L <br />0.010 <br />94 <br />70 <br />130 <br />0.9 <br />20 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 11 of 26 <br />