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�- www.eiweab.corn � Helena, MT 677 -472 -0711 - Billings, W 800- 735 -4489 - Casper, WY 888- 235 -0515 <br />barjM Areft" um fig J Gillette, WY 866 -666 -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 />06/06/13 <br />Project: Schwartz SW 05/08/13 S26872 <br />Work Order: <br />C13050363 <br />Analyte Count Result Units <br />RL <br />0/W9EC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130510A <br />Sample ID: MB- 1_130510A <br />Method Blank <br />Run: BAL -19 130510A <br />05/10/13 15:22 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130510A <br />Laboratory Control Sample <br />Run: BAL- 19_130510A <br />05/10/13 15:23 <br />Solids, Total Dissolved TDS @ 180 C <br />1980 mg /L <br />20 <br />99 90 110 <br />Sample lD: C13050343 -007A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130510A <br />05/10/13 15:33 <br />Solids, Total Dissolved TDS @ 180 C <br />2080 mg /L <br />11 <br />99 90 110 <br />Sample ID: C13050359 -007A DUP <br />Sample Duplicate <br />Run: BAL- 19_130510A <br />05/10/13 15:39 <br />Solids, Total Dissolved TDS @ 180 C <br />2530 mg /L <br />20 <br />0.8 <br />5 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 6 of 26 <br />