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www.ene &ab.com Helena, MT 877- 472 -0711 - Billings, MT 800 -735 -4489 - Casper, WY 888- 235 -0515 <br />m "Sim 1U2 F 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 />02/13/13 <br />Project: Schwartz GW 1/24/13 S26788 <br />Work Order: <br />C13010781 <br />Analyte Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130128A <br />Sample ID: MB- 1_130128A <br />Method Blank <br />Run: BAL- 16_130128A <br />01/28/13 14:50 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130128A <br />Laboratory Control Sample <br />Run: BAL- 16_130128A <br />01/28/13 14:50 <br />Solids, Total Dissolved TDS @ 180 C <br />1950 mg /L <br />20 <br />98 90 110 <br />Sample ID: C13010722 -003A DUP <br />Sample Duplicate <br />Run: BAL- 16_130128A <br />01/28/13 14:50 <br />Solids, Total Dissolved TDS @ 180 C <br />39200 mg /L <br />500 <br />2.1 <br />5 <br />Sample ID: 013010781 -001B MS <br />Sample Matrix Spike <br />Run: BAL- 16_130128A <br />01/28/13 14:51 <br />Solids, Total Dissolved TDS @ 180 C <br />5110 mg /L <br />20 <br />100 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 24 <br />