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• - www.enerdab.com r Helena, MT 877 -472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 888 - 235 -8515 <br />N1Qf skw 1892 J Gillette, WY 866 -686 -7175 • Rapid City, SO 888 -672 -1225 • College Station, <br />Tx 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />10/02/13 <br />Project: Schwartz SW 9/5/13 S27130 <br />Work Order: <br />C13090203 <br />Analyte Count <br />Result Units RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130909A <br />Sample ID: MB- 1_130909A <br />Method Blank Run: BAL- 19_130909A <br />09/09/13 15:04 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L 10 <br />Sample ID: LCS- 2_130909A <br />Laboratory Control Sample Run: BAL- 19_130909A <br />09/09/13 15:05 <br />Solids, Total Dissolved TDS @ 180 C <br />2010 mg /L 20 100 90 110 <br />Sample ID: C13090201 -017A MS <br />Sample Matrix Spike Run: BAL- 19_130909A <br />09/09/13 15:17 <br />Solids, Total Dissolved TDS @ 180 C <br />4460 mg /L 20 101 90 110 <br />Sample ID: 013090203 -001A DUP <br />Sample Duplicate Run: BAL- 19_130909A <br />09/09/13 15:21 <br />Solids, Total Dissolved TDS @ 180 C <br />332 mg /L 10 1.2 <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 25 <br />