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\ WNmenergylab.com Helena, MT 877- 472 - 0711 - Billings, W 880- 735 -4489 • Casper, WY 888 -235 -0515 <br />'tW2 Gillette, WY 866 - 686 -7175 - Rapid City, So 886 - 672 -1225 - College Station, TX 888 - 690 -2218 <br />J <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Revised Date: <br />06/18/13 <br />Client: Cotter Corporation <br />Report Date: <br />06/13/13 <br />Project: Schwartz 5/16/13 S26979 <br />Work Order: <br />C13050681 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A4500 -F C <br />Batch: R173727 <br />Sample ID: MBLK <br />Method Blank Run: MANTECH_130517B <br />05/17/13 11:45 <br />Fluoride <br />ND mg /L 0.005 <br />Sample ID: LCS -7250 <br />Laboratory Control Sample Run: MANTECH_130517B <br />05/17/13 11:48 <br />Fluoride <br />2.12 mg /L 0.10 106 90 110 <br />Sample ID: C13050678- 007AMS <br />Sample Matrix Spike Run: MANTECH_130517B <br />05/17/13 13:51 <br />Fluoride <br />2.08 mg /L 0.10 101 80 120 <br />Sample ID: C13050678- 007AMSD <br />Sample Matrix Spike Duplicate Run: MANTECH_130517B <br />05/17/13 13:54 <br />Fluoride <br />2.08 mg /L 0.10 101 80 120 0.0 <br />10 <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 />