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www.energylab.com I Helena. MT 877- 472 -0711 • Billings, MT 800 -735 -4489 • Casper, WY 888 - 235 -0515 <br />Analytical Excellence Since 1952 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: O'Connor Design Inc <br />Report Date: <br />06/18/12 <br />Project: CM -25 <br />Work Order: <br />C12050462 <br />Analyte <br />Count Result Units <br />RL <br />%REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: A4500 -NH3 G <br />Batch: 33625 <br />Sample ID: MB -33625 <br />Method Blank <br />Run TECHNICON_120515A <br />05/15/12 14:12 <br />Nitrogen, Ammonia as N <br />ND mg /L <br />0.02 <br />Sample ID: LCS -33625 <br />Laboratory Control Sample <br />Run TECHN ICON— 120515A <br />05115/12 14:14 <br />Nitrogen, Ammonia as N <br />208 mg /L <br />0 050 <br />106 90 110 <br />Sample ID: C12050462- 001AMS <br />Sample Matrix Spike <br />Run TECHN ICON— 120515A <br />05/15/12 14:18 <br />Nitrogen, Ammonia as N <br />2.04 mg /L <br />0.050 <br />104 90 110 <br />Qualifiers: <br />L - Analyte reporting limit. ND - Not detected at the reporting limit. <br />DC - Minimum detectable concentration <br />