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wwwoergylaD.com t Helena, W 677- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888- 235 -8515 <br />1,64 A -,&w M. r DomIllam Sm fait ,I Gillette, WY 866 -666 -7175 • Rapid City, So 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 />07/12/13 <br />Project: Schwartz GW 6/18/13 S27005 <br />Work Order: <br />C13060672 <br />Analyte <br />Count Result Units <br />RL <br />° /.REC <br />Low Limit High Limit RPD <br />1 <br />RPDLimit Qual <br />Method: <br />A4500 -F C <br />Analytical Run: MANTECH_130619A <br />Sample ID: <br />CCV -7366 <br />Continuing Calibration Verification Standard <br />06/19/13 13:26 <br />Fluoride <br />100 mg /L <br />010 <br />100 <br />90 110 <br />Method: <br />A4500 -F C <br />Batch R174975 <br />Sample ID: <br />MBLK <br />Method Blank <br />Run. MANTECH_130619A <br />06/19/13 09:55 <br />Fluoride <br />0.01 mg /L <br />0.005 <br />Sample ID: <br />LCS -7460 <br />Laboratory Control Sample <br />Run: MANTECH_130619A <br />06/19/13 09:57 <br />Fluoride <br />2.04 mg /L <br />0.10 <br />102 <br />90 110 <br />Sample ID: <br />013060670- 009AMS <br />Sample Matrix Spike <br />Run: MANTECH_130619A <br />06/19/13 13:40 <br />Fluoride <br />2.48 mg /L <br />0.10 <br />102 <br />80 120 <br />Sample ID: <br />C13060670- 009AMSD <br />Sample Matrix Spike Duplicate <br />Run: MANTECH_130619A <br />06/19/13 13:43 <br />Fluoride <br />2.43 mg /L <br />0.10 <br />100 <br />80 120 2.0 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 7 of 22 <br />