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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, <br />MT 877.472.0711 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Report Date: <br />03/31/15 <br />Project: Schwartz -GW 3/18/15 S27837,S27838 Work Order: <br />C15030640 <br />i <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD <br />RPDLimit Qual <br />Method: E353.2 <br />Analytical Run: TECHNICON_150320A <br />Lab ID: CCV-72 <br />Continuing Calibration Verification Standard <br />03/20/15 14:39 <br />Nitrogen, Nitrate+Nitrite as N <br />1.06 mg/L 0.10 106 90 110 <br />Method: E353.2 <br />Batch: R197359 <br />Lab ID: MBLK-1 <br />Method Blank Run: TECHNICON 150320A <br />03/20/15 11:41 <br />Nitrogen, Nitrate+Nitrite as N <br />ND mg/L 0.01 <br />Lab ID: LFB-3 <br />Laboratory Fortified Blank Run: TECHNICON_150320A <br />03/20/15 11:46 <br />Nitrogen, Nitrate+Nitrite as N <br />1.93 mg/L 0.10 98 90 110 <br />Lab ID: C15030659-001BMS <br />Sample Matrix Spike Run: TECHNICON_150320A <br />03/20/15 15:21 <br />Nitrogen, Nitrate+Nitrite as N <br />3.23 mg/L 0.10 90 90 110 <br />Lab ID: C15030659-001BMSD <br />Sample Matrix Spike Duplicate Run: TECHNICON_150320A <br />03/20/15 15:24 <br />Nitrogen, Nitrate+Nitrite as N <br />3.46 mg/L 0.10 102 90 110 6.9 <br />10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 9 of 16 <br />