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www.energylab.com Helena, W 877472 -0711 - Billings, MT 800- 7354489 - Casper, WY 888 - 235 -0515 <br />Gillette, WY 866 -686 -1115 - Rapid City, SO 886 -672 -1225 - College Station, T% 888- 690 -2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 05/18/13 S26985 & S26986 <br />Analyte Count Result Units <br />Method: A2540 C <br />Sample ID: M13- 1_130522A <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />Sample ID: LCS- 2_130522A <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />1950 mg /L <br />Sample ID: C13050695 -006A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />901 mg /L <br />Sample ID: C13050695 -007A MS <br />Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C <br />1220 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/11/13 <br />Work Order: C13050721 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: TDS 130522A <br />Run: BAL- 19_130522A 05/22/13 16:07 <br />10 <br />Run: BAL- 19_130522A <br />20 97 90 110 <br />Run: BAL- 19_130522A <br />10 <br />Run: BAL- 19_130522A <br />11 95 90 110 <br />ND - Not detected at the reporting limit. <br />0.2 <br />05/22/13 16:07 <br />05/22/13 16:16 <br />5 <br />05/22/13 16:17 <br />Page 8 of 24 <br />