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• www.energylab.com Helena, MT 877- 472 -0711 • Billings, MT 600 -735 -4489 • Casper, WY 888- 235 -6515 <br />E°r'M'0n 't 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 />07/12/13 <br />Project: Schwartz GW 6/18/13 S27005 <br />Work Order: <br />C13060672 <br />FAnalyte Count <br />Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130619A <br />Sample ID: MB- 1_130619A <br />Method Blank <br />Run: BAL- 19_130619B <br />06/19/13 14:42 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130619A <br />Laboratory Control Sample <br />Run: BAL- 19_130619B <br />06/19/13 14:43 <br />Solids, Total Dissolved TDS @ 180 C <br />1950 mg /L <br />20 <br />98 90 110 <br />Sample ID: C13060670 -008A DUP <br />Sample Duplicate <br />Run: BAL- 19_130619B <br />06/19/13 14:52 <br />Solids, Total Dissolved TDS @ 180 C <br />584 mg /L <br />10 <br />0.3 <br />5 <br />Sample ID: C13060670 -009A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130619B <br />06/19/13 14:52 <br />Solids, Total Dissolved TDS @ 180 C <br />1700 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 22 <br />