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rLml www.mwoab.com ; Helena, MT B77 -47Y -0711 *Billings, MT 600 - 735 -4469 •Casper, YV7 888- 235 -0515 <br />AWWW Emb Sk.IM J Gillette, wY 866 -6B6 -7175 • Rapid City, SD 88B- 672 -1225 • College Station, TX 868- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />08/29/13 <br />Project: Schwartz -GW 8/2/13 S27063 <br />Work Order: <br />C13080122 <br />Analyte Count Result Units <br />RL <br />° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130806A <br />Sample ID: MB- 1_130806A <br />Method Blank <br />Run: BAL -19 130806A <br />08/06/13 15:37 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130806A <br />Laboratory Control Sample <br />Run BAL- 19_130806A <br />08/06/13 15:37 <br />Solids, Total Dissolved TDS @ 180 C <br />2020 mg /L <br />20 <br />101 90 110 <br />Sample ID: 013080108 -001B DUP <br />Sample Duplicate <br />Run: BAL- 19_130806A <br />08/06/13 15:38 <br />Solids, Total Dissolved TDS @ 180 C <br />358 mg /L <br />10 <br />5 <br />Sample ID: 013080120 -001C MS <br />Sample Matrix Spike <br />Run: BAL- 19_130806A <br />08/06/13 15:38 <br />Solids, Total Dissolved TDS @ 180 C <br />4360 mg /L <br />20 <br />102 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 3 of 12 <br />