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• - www.enerdab.com Helena, MT 877- 472 -0711 • Billings, MT 800 - 735 -4489 • Casper, WY 888- 235 -0515 <br />E14 N1C19= 1952 Gillette, WY 866 -686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: <br />Cotter Corporation <br />Report Date: <br />09/24/14 <br />Project: <br />Schwartz -SW 9/3/14 <br />S27624 <br />Work Order: <br />C14090144 <br />Analyte <br />Count Result Units <br />RL %REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: <br />A4500 -F C <br />Analytical Run: MANTECH_140904A <br />Lab ID: <br />CCV -7863 <br />Continuing Calibration Verification Standard <br />09/04/14 14:02 <br />Fluoride <br />2.00 mg /L <br />0.10 <br />100 <br />90 110 <br />Method: <br />A4500 -F C <br />Batch: R190686 <br />Lab ID: <br />MBLK <br />Method Blank <br />Run: MANTECH_140904A <br />09/04/14 12:00 <br />Fluoride <br />ND mg /L <br />0.01 <br />Lab ID: <br />LCS -8011 <br />Laboratory Control Sample <br />Run: MANTECH_140904A <br />09/04/14 12:03 <br />Fluoride <br />2.00 mg /L <br />0.10 <br />100 <br />90 110 <br />Lab ID: <br />014090135- 006AMS <br />Sample Matrix Spike <br />Run: MANTECH_140904A <br />09/04/14 14:11 <br />Fluoride <br />2.43 mg /L <br />0.10 <br />95 <br />80 120 <br />Lab ID: <br />C14090135- 006AMSD Sample Matrix Spike Duplicate <br />Run: MANTECH_140904A <br />09/04/14 14:14 <br />Fluoride <br />2.48 mg /L <br />0.10 <br />98 <br />80 120 2.0 <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 24 <br />