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• www.ewdab.com Helena, MT 877472 -0711 • Billings, MY 800- 7354488 • Casper, WY 888 - 235 -0515 <br />Ewabm Man IM Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, IX 888 - 680 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz -GW 9/11/14 S27683 and S27684 <br />Analyte Count Result Units <br />Method: A2540 C <br />Lab ID: MB-1140912A <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />Lab ID: LCS- 2_140912A <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />1110 mg /L <br />Lab ID: C14090495 -008A MS <br />Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C <br />6510 mg /L <br />Lab ID: 014090495 -017A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />6070 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 09/30/14 <br />Work Order: C14090497 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: TDS140912A <br />Run: BAL -19 140912A 09/12/14 14:45 <br />7 <br />Run: BAL- 19_140912A <br />11 100 90 110 <br />Run: BAL- 19_140912A <br />40 95 90 110 <br />Run: BAL- 19_140912A <br />100 <br />ND - Not detected at the reporting limit. <br />09/12/14 14:45 <br />09/12/14 14:51 <br />09/12/14 14:53 <br />0.8 5 <br />Page 8 of 25 <br />