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• - www.ewdab.com Helena, Mr 877472 -0711 • Billings, MT 800 - 7354489 • Casper, WY 888- 235 -0515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SD 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 12/1/14 S27813 and S27815 <br />Analyte Count Result Units <br />Method: A4500 -F C <br />Report Date: 12/29/14 <br />Work Order: C14120088 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Analytical Run: MANTECH_141203A <br />Lab ID: CCV -8197 Continuing Calibration Verification Standard 12/03/14 14:47 <br />Fluoride 2.00 mg /L 0.10 100 90 110 <br />Method: <br />A4500 -F C <br />Lab ID: <br />MBLK <br />Method Blank <br />Fluoride <br />ND mg /L <br />Lab ID: <br />C14120058- 001AMS <br />Sample Matrix Spike <br />Fluoride <br />2.33 mg /L <br />Lab ID: <br />C1 4120058-001 AMSD <br />Sample Matrix Spike Duplicate <br />Fluoride <br />2.38 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: MANTECH 141203A <br />11111il <br />Run: MANTECH_141203A <br />0.10 99 80 120 <br />Run: MANTECH_141203A <br />0.10 101 80 120 2.1 <br />ND - Not detected at the reporting limit. <br />Batch: R193959 <br />12/03/14 14:42 <br />12/03/14 14:52 <br />12/03/14 14:55 <br />10 <br />Page 7 of 25 <br />