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wwwxwg&b.com Helena, MT 677 -472 -0711 • Billings, MT 808 -735 -4489 • Casper, WY 888 -235 -0515 <br />A J <br />MA.IJV Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -872 -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 />02/26/14 <br />Project: Schwartz - GW 2/5/14 S27350 <br />Work Order: <br />C14020159 <br />Analyte Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS140206A <br />Sample ID: MB- 1_140206A <br />Method Blank <br />Run: BAL -19 140206B <br />02/06/14 15:12 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />7 <br />Sample ID: LCS- 2_140206A <br />Laboratory Control Sample <br />Run: BAL- 19_140206B <br />02/06/14 15:12 <br />Solids, Total Dissolved TDS @ 180 C <br />1980 mg /L <br />20 <br />99 90 110 <br />Sample ID: C14020110 -001A DUP <br />Sample Duplicate <br />Run: BAL- 19_140206B <br />02/06/14 15:12 <br />Solids, Total Dissolved TDS @ 180 C <br />215 mg /L <br />10 <br />0.0 <br />5 <br />Sample ID: C14020127 -001 B MS <br />Sample Matrix Spike <br />Run: BAL- 19_140206B <br />02/06/14 15:13 <br />Solids, Total Dissolved TDS @ 180 C <br />14300 mg /L <br />100 <br />97 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 6 of 20 <br />