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www.eriergylsb.com ! Helena, MT 871 472 -0711 - Billings, W 800- 7354489 - Casper, WY 888- 235 -8515 <br />ha*W ft0ma Sm IJ52 J Gillette, WY 866 -686 -7175 - Rapid City, SG 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 />07/05/13 <br />Project: Schwartz GW 06/12/13 S27034 <br />Work Order: <br />C13060505 <br />Analyte Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS 130617A <br />Sample ID: MB- 1_130617A <br />Method Blank <br />Run: BAL -19 130617B <br />06/17/13 14:21 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130617A <br />Laboratory Control Sample <br />Run: BAL- 19_130617B <br />06/17/13 14:21 <br />Solids, Total Dissolved TDS @ 180 C <br />1920 mg /L <br />20 <br />96 90 110 <br />Sample ID: C13060461 -001A DUP <br />Sample Duplicate <br />Run: BAL- 19_130617B <br />06/17/13 14:21 <br />Solids, Total Dissolved TDS Co) 180 C <br />193 mg /L <br />10 <br />1.0 <br />5 <br />Sample ID: C13060461 -002A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130617B <br />06/17/13 14:22 <br />Solids, Total Dissolved TDS @ 180 C <br />1320 mg /L <br />11 <br />97 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 21 <br />