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www.vwoylab.com Helena, MT 877- 472 -0711 • Billings, W 800 -735 -4489 • Casper, WY 888 -235 -0515 <br />Am#Malhem*=Skee 192 Gillette, WY 886 -686 -1175 • Rapid City, SD 888- 672 -1225 • College Station, T% 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz GW 11/12/13 S27218 <br />Analyte Count Result Units <br />Method: A2540 C <br />Sample ID: MB- 1_131115A <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />Sample ID: LCS- 2_131115A <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />1950 mg /L <br />Sample ID: C13110587 -007A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />59500 mg /L <br />Sample ID: C13110599 -001A MS <br />Sample Matrix Spike <br />Solids, Total Dissolved TDS @ 180 C <br />1290 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 12/05/13 <br />Work Order: 013110612 <br />RL ° /6REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: TDS 131115A <br />Run: BAL -19 131115B 11/15/13 14:32 <br />10 <br />Run: BAL- 19_131115B <br />20 97 90 110 <br />Run: BAL- 19_131115B <br />500 <br />Run: BAL- 19_131115B <br />11 100 90 110 <br />ND - Not detected at the reporting limit. <br />1.6 <br />11/15/13 14:32 <br />11/15/13 14:33 <br />5 <br />11/15/13 14:33 <br />Page 6 of 21 <br />