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- wrvw.Mrg0ab.com ( I Helena, MT 677- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 - 235 -0515 <br />EmokmS ' IM ) Gillette, WY 866 -GBG -7175 • Rapid City, SD $86 -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 />08/08/13 <br />Project: Schwartz -GW 7/10/13 S27017 <br />Work Order: <br />C13070431 <br />Analyte Count Result Units <br />RL <br />° /AEC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130715A <br />Sample ID: MB- 1_130715A <br />Method Blank <br />Run: BAL- 19_130715B <br />07/15/13 14:53 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130715A <br />Laboratory Control Sample <br />Run: BAL- 19_130715B <br />07/15/13 14:53 <br />Solids, Total Dissolved TDS @ 180 C <br />2020 mg /L <br />20 <br />101 90 110 <br />Sample ID: C13070381 -001A DUP <br />Sample Duplicate <br />Run: BAL- 19_130715B <br />07/15/13 14:54 <br />Solids, Total Dissolved TDS @ 180 C <br />1040 mg /L <br />40 <br />4.5 <br />5 <br />Sample ID: C13070421 -001A MS <br />Sample Matrix Spike <br />Run BAL- 19_130715B <br />07/15/13 14:54 <br />Solids, Total Dissolved TDS @ 180 C <br />1320 mg /L <br />11 <br />101 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 20 <br />