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Trust our People. Trust our Data. i Billings. MT 800.735.4489 • Casper, WY 888.235.0515 <br />E College Station, TX 888.690.2118 • Gillette, WY 866.686.7175 • Helena, MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />04/10/15 <br />Project: Schwartz -GW 3/25/15 S28144,S28145 <br />Work Order: <br />C15030828 <br />Analyte <br />Count Result Units RL %REC Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: E353.2 <br />Nitrogen, Nitrate+Nitrite as N <br />Analytical Run: TECHNICON_150327A <br />Lab ID: ICV -2 <br />Initial Calibration Verification Standard <br />Nitrogen, Nitrate+Nitrite as N <br />03/27/15 12:26 <br />Nitrogen, Nitrate+Nitrite as N <br />2.59 mg/L 0.10 104 90 <br />110 <br />Lab ID: CCV-17 <br />Continuing Calibration Verification Standard <br />03/27/15 13:04 <br />Nitrogen, Nitrate+Nitrite as N <br />1.04 mg/L 0.10 104 90 <br />110 <br />Method: E353.2 <br />Lab ID: MBLK-1 <br />Method Blank <br />Nitrogen, Nitrate+Nitrite as N <br />ND mg/L <br />Lab ID: LFB-3 <br />Laboratory Fortified Blank <br />Nitrogen, Nitrate+Nitrite as N <br />1.86 mg/L <br />Lab ID: C15030828-001DMS <br />Sample Matrix Spike <br />Nitrogen, Nitrate+Nitrite as N <br />1.97 mg/L <br />Lab ID: C15030828-001DMSD <br />Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate+Nitrite as N <br />1.98 mg/L <br />Run: TECHNICON 150327A <br />0.01 <br />Run: TECHNICON_150327A <br />0.10 95 90 110 <br />Run: TECHNICON_150327A <br />0.10 98 90 110 <br />Run: TECHNICON_150327A <br />0.10 99 90 110 0.5 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R197599 <br />03/27/15 12:24 <br />03/27/15 12:29 <br />03/27/15 12:34 <br />03/27/15 12:36 <br />10 <br />Page 8 of 15 <br />