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• Trust our <br />People. 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: Cotter Corporation <br />Project: Schwartz -GW 3/26/15 S28160,S28161,S28166 <br />Analyte Count Result Units <br />Report Date: 04/07/15 <br />Work Order: C15030861 <br />RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: TECHNICON_150327A <br />Lab ID: ICV -2 Initial Calibration Verification Standard 03/27/15 12:26 <br />Nitrogen, Nitrate+Nitrite as N 2.59 mg/L 0.10 104 90 110 <br />Lab ID: CCV-17 Continuing Calibration Verification Standard 03/27/15 13:04 <br />Nitrogen, Nitrate+Nitrite as N 1.04 mg/L 0.10 104 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R 197599 <br />Run: TECHNICON 150327A 03/27/15 12:24 <br />Method: E353.2 <br />03/27/15 12:29 <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: C15030828-001 DMS <br />Sample Matrix Spike <br />Nitrogen, Nitrate+Nitrite as N <br />1.97 mg/L <br />Lab ID: 015030828-001DMSD <br />Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate+Nitrite as N <br />1.98 mg/L <br />Lab ID: C15030739-001 BMS <br />Sample Matrix Spike <br />Nitrogen, Nitrate+Nitrite as N <br />7.07 mg/L <br />Lab ID: C15030739-001BMSD <br />Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate+Nitrite as N <br />7.10 mg/L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Batch: R 197599 <br />Run: TECHNICON 150327A 03/27/15 12:24 <br />ND - Not detected at the reporting limit. <br />Page 9 of 17 <br />Run: TECHNICON_150327A <br />03/27/15 12:29 <br />0.10 <br />95 <br />90 110 <br />Run: TECHNICON_150327A <br />03/27/15 12:34 <br />0.10 <br />98 <br />90 110 <br />Run: TECHNICON_150327A <br />03/27/15 12:36 <br />0.10 <br />99 <br />90 110 0.5 <br />10 <br />Run: TECHNICON_150327A <br />03/27/15 13:11 <br />0.20 <br />107 <br />90 110 <br />Run: TECHNICON_150327A <br />03/27/15 13:14 <br />0.20 <br />108 <br />90 110 0.4 <br />10 <br />ND - Not detected at the reporting limit. <br />Page 9 of 17 <br />