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MN www.energ0ab.com � Helena, W 877- 472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888- 235 -8515 <br />' EWdk $k" I Gillette, W 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: Cotter Corporation <br />Report Date: <br />06/04/13 <br />Project: Schwartz SW 05/10/13 <br />S26874 & S26875 & S26926 -S269 <br />Work Order: <br />C13050437 <br />�Analyte <br />Count Result Units <br />RL <br />° /.REC <br />Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A4500 -F C <br />Batch: R173492 <br />Sample ID: MBLK <br />Method Blank <br />Run: MANTECH_130513A <br />05/13/13 10:46 <br />Fluoride <br />0.01 mg /L <br />0.005 <br />Sample ID: LCS -7250 <br />Laboratory Control Sample <br />Run: MANTECH_130513A <br />05/13/13 10:48 <br />Fluoride <br />2.12 mg /L <br />0.10 <br />106 <br />90 110 <br />Sample ID: C13050432 -001 AMS <br />Sample Matrix Spike <br />Run: MANTECH_130513A <br />05/13/13 11:42 <br />Fluoride <br />2.34 mg /L <br />0.10 <br />97 <br />80 120 <br />Sample ID: C13050432- 001AMSD <br />Sample Matrix Spike Duplicate <br />Run: MANTECH_130513A <br />05/13/13 11:45 <br />Fluoride <br />243 mg /L <br />0.10 <br />102 <br />80 120 3.8 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 15 of 40 <br />