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- www.ewulab.com Helena, MT 677- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 -235 -0515 <br />«AQ Dim IM 1 Gillette, WY 866 -686 -7175 • Rapid City, SC 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 />Project: Schwartz GW 5/15/2013 S26920 & S26921 <br />Analyte Count Result Units <br />Method: A2540 C <br />06/18/13 <br />Sample ID: MB- 1_130520B <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />Sample ID: LCS- 2_130520B <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />1910 mg /L <br />Sample ID: C13050683 -003A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />1930 mg /L <br />Sample ID: C13050683 -004A MS <br />Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C <br />3880 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 8 of 24 <br />Report Date: <br />06/18/13 <br />Work Order: <br />013050697 <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Batch: TDS 130520B <br />Run: BAL -19 130520C <br />05/21/13 08:19 <br />10 <br />Run: BAL- 19_130520C <br />05/21/13 08:19 <br />20 <br />95 90 110 <br />Run: BAL- 19_130520C <br />05/21/13 08:21 <br />20 <br />0.1 <br />5 <br />Run. BAL- 19_130520C <br />05/21/13 08:21 <br />20 <br />99 90 110 <br />ND - Not detected at the reporting limit. <br />Page 8 of 24 <br />