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www.vweab.com Helena, MT 877472 -0711 • Billings, W 606 - 7354489 • Casper, WY 888 -235 -8515 <br />Al-119 Gillette, WY 866- 686 -7175 • Rapid City, SD 886- 672 -1225 • College Station, TX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation <br />Project: Schwartz SW 09/05/13 S27131 <br />Report Date: 09/30/13 <br />Work Order: C13090222 <br />�Analyte Count Result Units RL ° /oREC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 <br />Analytical Run: SUB - 621161 / <br />Sample ID: ICV <br />Initial Calibration Verification Standard <br />09/13/13 10:29 <br />Nitrogen, Nitrate +Nitrite as N <br />22.1 mg /L <br />0.060 <br />101 <br />90 110 <br />Method: E353.2 <br />Batch: B_R211617 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB - 13211617 <br />09/13/13 10:30 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />0.001 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB - 6211617 <br />09/13/13 10:32 <br />Nitrogen, Nitrate +Nitrite as N <br />1.00 mg /L <br />0 010 <br />100 <br />90 110 <br />Sample ID: B13090851- 001AMS <br />Sample Matrix Spike <br />Run: SUB - 6211617 <br />09/13/13 11:28 <br />Nitrogen, Nitrate +Nitrite as N <br />1.02 mg /L <br />0.010 <br />101 <br />90 110 <br />Sample ID: B13090851- 001AMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB - 13211617 <br />09/13/13 11:29 <br />Nitrogen, Nitrate +Nitrite as N <br />1.01 mg /L <br />0.010 <br />100 <br />90 110 <br />0.7 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 20 of 27 <br />