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www.ener&b.com I Helena, MT 877 -472 -0711 • Billings, MT 800- 735 -4489 • Casper, WY 088 -235 -0515 <br />• Aa*tk /be&*aaVm IM ) Gillette, WY 866 -606 -7175 • Rapid City, SD 880 -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 GW 5/15/2013 S26920 & S26921 <br />Analyte <br />Count Result Units <br />Method: E353.2 <br />Sample ID: MBLK -1 <br />Method Blank <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />Sample ID: LFB -3 <br />Laboratory Fortified Blank <br />Nitrogen, Nitrate +Nitrite as N <br />2.06 mg /L <br />Sample ID: 013050695- 011DMS <br />Sample Matrix Spike <br />Nitrogen, Nitrate +Nitrite as N <br />2.09 mg /L <br />Sample ID: C13050695 -011 DMSD <br />Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate +Nitrite as N <br />2.08 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Report Date: 06/18/13 <br />Work Order: C13050697 <br />RL ° /aREC Low Limit High Limit RPD RPDLimit Qual <br />Batch: R173787 <br />Run: TECHNICON-1 30520A 05/20/13 10:26 <br />0.02 <br />Run: TECHNICON_130520A 05/20/13 10:31 <br />0.10 105 90 110 <br />Run: TECHNICON_130520A 05/20/13 13:31 <br />0.10 107 90 110 <br />Run: TECHNICON_130520A 05/20/13 13:34 <br />010 106 90 110 0.5 10 <br />ND - Not detected at the reporting limit. <br />Page 16 of 24 <br />