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Trust our People. Trust our Data. Billings, MT 800.735.4489 • Caspet. WY 888.235.0515 <br />• College Station. TX 888.690.2218 • 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 />05/07/15 <br />Project: Schwartz - GW 4/14/15 S27854, S27857 <br />Work Order: <br />C15040486 <br />Analyte <br />Count Result Units RL %REC Low Limit <br />High Limit RPD <br />RPDLimit Clual <br />Method: E353.2 <br />Lab ID: LFB-3 <br />Analytical Run: TECHNICON_150416A <br />Lab ID: ICV -2 <br />Initial Calibration Verification Standard <br />Nitrogen, Nitrate+Nitrite as N <br />04/16/15 10:24 <br />Nitrogen, Nitrate+Nitrite as N <br />2.57 mg/L 0.10 103 90 <br />110 <br />Sample Matrix Spike <br />Lab ID: CCV-16 <br />Continuing Calibration Verification Standard <br />Nitrogen, Nitrate+Nitrite as N <br />04/16/15 11:00 <br />Nitrogen, Nitrate+Nitrite as N <br />1.08 mg/L 0.10 108 90 <br />110 <br />Sample Matrix Spike Duplicate <br />Method: E353.2 <br />Lab ID: MBLK-1 <br />Method Blank <br />Run: TECHNICON_150416A <br />Nitrogen, Nitrate+Nitrite as N <br />ND mg/L <br />0.01 <br />Lab ID: LFB-3 <br />Laboratory Fortified Blank <br />Run: TECHNICON_150416A <br />Nitrogen, Nitrate+Nitrite as N <br />2.04 mg/L <br />0.10 <br />104 90 110 <br />Lab ID: C15040488-001DMS <br />Sample Matrix Spike <br />Run: TECHNICON_150416A <br />Nitrogen, Nitrate+Nitrite as N <br />2.95 mg/L <br />0.10 <br />107 90 110 <br />Lab ID: 015040488-001DMSD <br />Sample Matrix Spike Duplicate <br />Run: TECHNICON_150416A <br />Nitrogen, Nitrate+Nitrite as N <br />2.93 mg/L <br />0.10 <br />106 90 110 0.7 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Batch: R198304 <br />04/16/15 10:22 <br />04/16/15 10:27 <br />04/16/15 11:07 <br />04/16/15 11:10 <br />10 <br />Page 21 of 30 <br />