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\ www.energylab.com j Helena, MT 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888- 235 -8515 <br />AQ' ' i Gillette, WY 866- 606 -7175 • Rapid City, SD 886 -672 -1225 • College Station, A 888 - 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />07/08/13 <br />Project: Schwartz GW 6/6/2013 S26941 <br />Work Order: <br />C13060270 <br />Analyte Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130612A <br />Sample ID: MB- 1_130612A <br />Method Blank <br />Run: BAL -19 130612A <br />06/12/13 10:44 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130612A <br />Laboratory Control Sample <br />Run: BAL- 19_130612A <br />06/12/13 10:44 <br />Solids, Total Dissolved TDS @ 180 C <br />2000 mg /L <br />20 <br />100 90 110 <br />Sample ID: C13060255 -005A DUP <br />Sample Duplicate <br />Run: BAL- 19_130612A <br />06/12/13 10:44 <br />Solids, Total Dissolved TDS @ 180 C <br />478 mg /L <br />10 <br />1 2 <br />5 <br />Sample ID: C13060255 -010A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130612A <br />06/12/13 10.45 <br />Solids, Total Dissolved TDS @ 180 C <br />1400 mg /L <br />11 <br />100 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 6 of 21 <br />