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r+ww.eweab.com ( Helena, MT 077472 -0711 • Billings, MT 000 -735 -4409 • Casper, WY 808- 235 -0515 <br />Gillette, WY 808 -080 -1175 •Rapid City, SD 880 -072 -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 />07/08/13 <br />Project: Schwartz SW 6/5/2013 S26940 <br />Work Order: <br />013060211 <br />Analyte Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130611A <br />Sample ID: MB- 1_130611A <br />Method Blank <br />Run: BAL -19 130611B <br />06/11/13 15:44 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130611A <br />Laboratory Control Sample <br />Run: BAL- 19_130611B <br />06/11/13 15:44 <br />Solids, Total Dissolved TDS @ 180 C <br />1930 mg /L <br />20 <br />96 90 110 <br />Sample ID: C13060150 -004A DUP <br />Sample Duplicate <br />Run: BAL- 19_130611B <br />06/11/13 15:44 <br />Solids, Total Dissolved TDS @ 180 C <br />661 mg /L <br />10 <br />2.1 <br />5 <br />Sample ID: C13060184 -001A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130611 B <br />06/11/13 15:45 <br />Solids, Total Dissolved TDS @ 180 C <br />14400 mg /L <br />100 <br />93 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 27 <br />