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www.owolab.com Helena, MT 877- 472 -0711 - Billings, MT 608- 735 -4469 a Casper, WY 866- 235 -0515 <br />E'h=Sm IM Gillette, WY 866- 886 -7175 - Rapid City, SD 886- 672 -1225 - College Station, TX 886 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 11/15/13 S27276 <br />Analyte Count Result Units <br />Method: A2540 C <br />Sample ID: MB- 1_131119A <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />Sample ID: LCS- 2_131119A <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />2040 mg /L <br />Sample ID: C13110698 -001 A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />5870 mg /L <br />Sample ID: C13110698 -002A MS <br />Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C <br />15700 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 12/05/13 <br />Work Order: C13110695 <br />RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: TDS 131119A <br />Run. BAL -19 131119A 11/19/13 15.27 <br />10 <br />Run: BAL -19 131119A 11/19/13 15:27 <br />20 102 90 110 <br />Run: BAL -19 131119A 11/19/13 15:41 <br />100 5 <br />Run: BAL -19 131119A 11/19/13 15:42 <br />100 100 90 110 <br />ND - Not detected at the reporting limit. <br />Page 6 of 21 <br />