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0`11 a www.erwgylab.com J Helena, MT 877-472 -0711 • Billings, MT 860- 735-4489 • Casper, WY 868- 235 -0515 <br />I " 2War 9= 1832 Gillette, WY 866 -686 -7175 • Rapid City, SD 886 -672 -1225 • College Station, TX 888- 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/30/14 <br />Project: Schwartz -SW 9/4/14 S27661 Work Order: C14090226 <br />Analyte Count Result Units <br />RL <br />%REC Low Limit High Limit <br />RPD RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS140908A <br />Lab ID: MS-1140908A <br />Method Blank <br />Run: BAL -19 140908B <br />09/08/14 14:19 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />7 <br />Lab ID: LCS- 2_140908A <br />Laboratory Control Sample <br />Run: BAL- 19_140908B <br />09/08/14 14:20 <br />Solids, Total Dissolved TDS @ 180 C <br />1110 mg /L <br />11 <br />100 90 110 <br />Lab ID: C14090226 -0016 DU <br />Sample Duplicate <br />Run: BAL- 19_140908B <br />09/08/14 14:25 <br />Solids, Total Dissolved TDS @ 180 C <br />376 mg /L <br />10 <br />0.2 5 <br />Lab ID: 014090228 -001A MS <br />Sample Matrix Spike <br />Run: BAL- 19_140908B <br />09/08/14 14:25 <br />Solids, Total Dissolved TDS @ 180 C <br />4810 mg /L <br />20 <br />103 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 26 <br />