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Z' Trust ourPeople. Trust our Data. Billings, MT 800 735.4489 • Casper, 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: <br />Cotter Corporation <br />Report Date: <br />04/16/15 <br />Project: <br />Schwartz -GW 3/27/15 S28168,S28169 <br />Work Order: <br />C15030895 <br />Analyte <br />Count Result Units RL %REC Low Limit <br />High Limit RPD <br />RPDLimit Qual <br />Method: <br />E353.2 <br />Analytical Run: TECHNICON_150331A <br />Lab ID: <br />CCV-16 Continuing Calibration Verification Standard <br />03/31/15 14:58 <br />Nitrogen, <br />Nitrate+Nitrite as N 1.10 mg/L 0.10 110 90 <br />110 <br />0.10 <br />Method: E353.2 <br />Batch: R197723 <br />Lab ID: MBLK-1 <br />Method Blank <br />Run: TECHNICON 150331A <br />03/31/15 14:20 <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_150331A <br />03/31/15 14:25 <br />Nitrogen, Nitrate+Nitrite as N <br />1.97 mg/L <br />0.10 <br />101 90 110 <br />Lab ID: C15030896-002DMS <br />Sample Matrix Spike <br />Run: TECHNICON_150331A <br />03/31/15 15:05 <br />Nitrogen, Nitrate+Nitrite as N <br />2.73 mg/L <br />0.10 <br />106 90 110 <br />Lab ID: C15030895-002DMSD <br />Sample Matrix Spike Duplicate <br />Run: TECHNICON_150331A <br />03/31/15 15:08 <br />Nitrogen, Nitrate+Nitrite as N <br />2.74 mg/L <br />0.10 <br />106 90 110 0.4 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 10 of 17 <br />