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• wwww.ener&b.com Helena, MT 811472 -0711 • Billings, MT 600- 735 -4485 • Casper, WY 888- 235 -8515 <br />Aa> 0"Enville ar sk" 1168 Gillette, WY 866-686 -7175 • Rapid City, SO 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 />Project: Schwartz SW 8/6/13 S27019 <br />[Analyte Count Result Units <br />RL <br />° /.REC <br />Report Date: <br />Work Order: <br />Low Limit High Limit RPD <br />09/05/13 <br />C13080305 <br />RPDLimit Qual <br />Method: <br />A4500 -F C <br />Analytical Run: <br />MANTECH_130808A <br />Sample ID: <br />CCV -7366 <br />Continuing Calibration Verification Standard <br />08/08/13 13:26 <br />Fluoride <br />1.04 mg /L <br />0.10 <br />104 <br />90 110 <br />Method: <br />A4500 -F C <br />Batch: R176870 <br />Sample ID: <br />MBLK <br />Method Blank <br />Run: MANTECH_130808A <br />08/08/13 09:59 <br />Fluoride <br />0.01 mg /L <br />0.005 <br />Sample ID: <br />LCS -7572 <br />Laboratory Control Sample <br />Run- MANTECH_130808A <br />08/08/13 10:02 <br />Fluoride <br />2.00 mg /L <br />0.10 <br />100 <br />90 110 <br />Sample ID: <br />C13080305- 001AMS <br />Sample Matrix Spike <br />Run: MANTECH_130808A <br />08/08/13 13:43 <br />Fluoride <br />2.29 mg /L <br />0.10 <br />100 <br />80 120 <br />Sample ID: <br />C13080305- 001AMSD <br />Sample Matrix Spike Duplicate <br />Run: MANTECH_130808A <br />08/08/13 13:53 <br />Fluoride <br />2.29 mg /L <br />0.10 <br />100 <br />80 120 0.0 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 8 of 25 <br />