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• www.ewdab.com Helena, MT 677- 472 -0711 • Billings, W 600 -735 -4489 • Casper, WY 888- 235 -0513 <br />Gillette, WY 866 -686 -7175 • Rapid City, So 888 - 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 5/21/13 S26991 - S26995 <br />Analyte Count Result Units <br />Method: A4500 -F C <br />Sample ID: MBLK <br />Method Blank <br />Fluoride <br />0.01 mg /L <br />Sample ID: LCS -7250 <br />Laboratory Control Sample <br />Fluoride <br />2.12 mg /L <br />Sample ID: C13050868- 004BMS <br />Sample Matrix Spike <br />Fluoride <br />2.34 mg /L <br />Sample ID: 013050868- 004BMSD <br />Sample Matrix Spike Duplicate <br />Fluoride <br />234 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/27/13 <br />Work Order: C13050860 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R173958 <br />Run: MANTECH 130523A 05/23/13 08:01 <br />0.005 <br />Run: MANTECH 130523A 05/23/13 08:03 <br />0.10 106 90 110 <br />Run: MANTECH 130523A 05/23/13 16:08 <br />0.10 107 80 120 <br />Run: MANTECH 130523A 05/23/13 16:11 <br />0.10 107 80 120 0.0 10 <br />ND - Not detected at the reporting limit. <br />Page 12 of 31 <br />