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• www.efwDlab.com � Helena, MT 877-472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 868- 235 -0515 <br />1°'saQU IM Gillette, WY 866 - 686 -7175 • Rapid City, So 886- 672 -1225 • College Station, TX 808 -690 -2218 <br />r <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />06/21/13 <br />Project: Schwartz SW 5/22/13 S26996 <br />Work Order: <br />C13050909 <br />[Analyte Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A2540 C <br />Batch: TDS130528A <br />Sample ID: MB- 1_130528A <br />Method Blank <br />Run: BAL -19 130528B <br />05/28/13 11:56 <br />Solids, Total Dissolved TDS @ 180 C <br />ND mg /L <br />10 <br />Sample ID: LCS- 2_130528A <br />Laboratory Control Sample <br />Run: BAL- 19_130528B <br />05/28/13 11:56 <br />Solids, Total Dissolved TDS @ 180 C <br />1940 mg /L <br />20 <br />97 90 110 <br />Sample ID: C13050934 -001A DUP <br />Sample Duplicate <br />Run: BAL- 19_130528B <br />05/28/13 11:57 <br />Solids, Total Dissolved TDS @ 180 C <br />252 mg /L <br />10 <br />2.0 <br />5 <br />Sample ID: C13050899 -002A MS <br />Sample Matrix Spike <br />Run: BAL- 19_130528B <br />05/28/13 15:44 <br />Solids, Total Dissolved TDS @ 180 C <br />91600 mg /L <br />500 <br />99 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 6 of 26 <br />