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www.e wm4ab.com Helena, MT 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888 - 235 -0515 <br />Seas. ylSY Gillette, WY 866- 606 -7175 • Rapid City, SO 888- 672 -1225 • College Station, T% 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 12/23/13 S27306 <br />Analyte Count Result Units <br />Method: A2540 C <br />Sample ID: MB- 1_131226A <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />Sample ID: LCS- 2_131226A <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />1980 mg /L <br />Sample ID: C13120830 -001A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />283 mg /L <br />Sample ID: C13120830 -002A MS <br />Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C <br />1160 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 02/03/14 <br />Work Order: C13120854 <br />RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Run: BAL -19 131226A <br />10 <br />Run: BAL -19 131226A <br />20 99 90 110 <br />Run: BAL -19 131226A <br />10 <br />Run: BAL -19 131226A <br />11 97 90 110 <br />ND - Not detected at the reporting limit. <br />1.8 <br />12/26/13 15:05 <br />12/26/13 15:06 <br />12/26/13 15:06 <br />5 <br />12/26/13 15:07 <br />Page 8 of 31 <br />