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• c. - www.enerdab.com Helena, W 877472 -0711 • Billings, W 600- 7354489 • Casper, WY 888 - 235 -0515 <br />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 <br />Report Date: <br />09/30/14 <br />Project: Schwartz -GW 9/10/14 S27680,S27681 <br />Method Blank <br />Work Order: <br />C14090456 <br />Analyte Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Lab ID: LCS- 2_140915A <br />Laboratory Control Sample <br />Batch: TDS140912A <br />Lab ID: MB-1140912A <br />Method Blank <br />Solids, Total Dissolved TDS @ 180 C <br />Run: BAL -19 140912A <br />09/12/14 14:45 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />7 <br />Sample Duplicate <br />Lab ID: LCS- 2_140912A <br />Laboratory Control Sample <br />Solids, Total Dissolved TDS @ 180 C <br />Run: BAL- 19_140912A <br />09/12/14 14:45 <br />Solids, Total Dissolved TDS @ 180 C <br />1110 mg /L <br />11 <br />100 90 110 <br />Lab ID: 014090449 -001A DUP <br />Sample Duplicate <br />Solids, Total Dissolved TDS @ 180 C <br />Run: BAL- 19_140912A <br />09/12/14 14:45 <br />Solids, Total Dissolved TDS @ 180 C <br />249 mg /L <br />10 <br />1.2 <br />5 <br />Lab ID: C14090451 -001A MS <br />Sample Matrix Spike <br />Run: BAL- 19_140912A <br />09/12/14 14:46 <br />Solids, Total Dissolved TDS @ 180 C <br />1500 mg /L <br />11 <br />100 90 110 <br />Method: A2540 C <br />Batch: TDS140915A <br />Lab ID: MB-1140915A <br />Method Blank <br />Run: BAL -19 140915A <br />09/15/14 14:42 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />7 <br />Lab ID: LCS- 2_140915A <br />Laboratory Control Sample <br />Run: BAL- 19_140915A <br />09/15/14 14:42 <br />Solids, Total Dissolved TDS @ 180 C <br />1110 mg /L <br />11 <br />100 90 110 <br />Lab ID: 014090456 -001A DUP <br />Sample Duplicate <br />Run: BAL- 19_140915A <br />09/15/14 14:42 <br />Solids, Total Dissolved TDS @ 180 C <br />205 mg /L <br />10 <br />1.8 5 <br />Lab ID: C14090522 -001A MS <br />Sample Matrix Spike <br />Run: BAL- 19_140915A <br />09/15/14 14:43 <br />Solids, Total Dissolved TDS @ 180 C <br />1870 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 8 of 25 <br />