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www.errergyla0.com Helena, MT 877 -472 -0711 • Billings, MT 600 -735 -4489 • Casper, WY 888- 235 -0515 <br />=Dow Gillette, WY 866 -086 -1175 • 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 />02/25/14 <br />Project: Schwartz -SW 2/4/14 S27322 <br />Work Order: <br />C14020114 <br />Analyte Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS 140205A <br />Sample ID: MB- 1_140205A <br />Method Blank <br />Run: BAL -19 140205A <br />02/05/14 13:27 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />7 <br />Sample ID: LCS- 2_140205A <br />Laboratory Control Sample <br />Run: BAL- 19_140205A <br />02/05/14 13:28 <br />Solids, Total Dissolved TDS @ 180 C <br />2020 mg /L <br />20 <br />101 90 110 <br />Sample ID: C14020050 -001 B DUP <br />Sample Duplicate <br />Run: BAL- 19_140205A <br />02/05/14 13:28 <br />Solids, Total Dissolved TDS @ 180 C <br />1110 mg /L <br />20 <br />0.3 <br />5 <br />Sample ID: 014020050 -002B MS <br />Sample Matrix Spike <br />Run: BAL- 19_140205A <br />02/05/14 13:29 <br />Solids, Total Dissolved TDS @ 180 C <br />3300 mg /L <br />20 <br />99 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 26 <br />