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www.energylab.com Helena, Mt 877 - 472 -0711 - Billings, W 800- 735 -4469 - Casper, WY 888- 235 -8515 <br />flat Gillette, WY 866 -686 -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 />08/05/13 <br />Project: Schwartz GW 6/28/13 S27040 <br />Work Order: <br />C13070012 <br />[Analyte Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS 130703A <br />Sample ID: MB- 1_130703A <br />Method Blank <br />Run: BAL -19 130703C <br />07/03/13 16:00 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130703A <br />Laboratory Control Sample <br />Run: BAL- 19_130703C <br />07/03/13 16:00 <br />Solids, Total Dissolved TDS @ 180 C <br />1950 mg /L <br />20 <br />98 90 110 <br />Sample ID: C13061053 -014A DUP <br />Sample Duplicate <br />Run BAL- 19_130703C <br />07/03/13 16:03 <br />Solids, Total Dissolved TDS @ 180 C <br />309 mg /L <br />10 <br />1.6 <br />5 <br />Sample ID: C13061086 -002A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130703C <br />07/03/13 16:47 <br />Solids, Total Dissolved TDS @ 180 C <br />3900 mg /L <br />20 <br />102 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 21 <br />