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www.vwgOsb.com Helena, MT 877 - 472 -0711 • Billings, SIT 800 -735 -4489 • Casper, WY 888- 235 -8515 <br />Gillette, WY 866 -686 -7175 • Rapid City, SO 888 - 672 -1225 • College Station, TX 888 - 690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 09/05/13 <br />Project: Schwartz SW 8/6/13 S27019 Work Order: 013080305 <br />Analyte Count Result Units RL ° /6REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB- B209980 <br />Sample ID: ICV Initial Calibration Verification Standard 08/14/13 11:00 <br />Nitrogen, Nitrate +Nitrite as N 22.0 mg /L 0.060 101 90 110 <br />Method: E353.2 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB- B209980 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L 0.001 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B209980 <br />Nitrogen, Nitrate +Nitrite as N <br />0.986 mg /L 0.010 <br />99 90 110 <br />Sample ID: 613080842 -001 BMS <br />Sample Matrix Spike <br />Run: SUB- B209980 <br />Nitrogen, Nitrate +Nitrite as N <br />1.21 mg /L 0.010 <br />95 90 110 <br />Sample ID: 813080842- 001BMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB- B209980 <br />Nitrogen, Nitrate +Nitrite as N <br />1.21 mg /L 0.010 <br />96 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />0.5 <br />Batch: B R209980 <br />08/14/13 11:01 <br />08/14/13 11:03 <br />08/14/13 13:42 <br />08/14/13 13:43 <br />10 <br />Page 18 of 25 <br />