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www.enerdab.com Helena, W 877 - 472 -6711 a Billings, MY 600 -735 -4469 • Casper, WY 888 - 235 -0515 <br />N1p 'flat Gillette, WY 866 - 666 -7175 • Rapid City, SO 886 -672 -1225 • College Station, YX 888 -690 -2218 <br />QA /QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 10/02/13 <br />Project: Schwartz SW 9/5/13 S27130 Work Order: 013090203 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB - 8211529 <br />Sample ID: ICV Initial Calibration Verification Standard 09/12/13 09:16 <br />Nitrogen, Nitrate +Nitrite as N 22.4 mg /L 0.060 103 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 18 of 25 <br />Method: E353.2 <br />Batch: B R211529 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB- B211529 <br />09/12/13 09:18 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />0.001 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B211529 <br />09/12/13 09:19 <br />Nitrogen, Nitrate +Nitrite as N <br />0.991 mg /L <br />0.010 <br />99 90 110 <br />Sample ID: B13090647- 006CMS <br />Sample Matrix Spike <br />Run: SUB- B211529 <br />09/12/13 09:25 <br />Nitrogen, Nitrate +Nitrite as N <br />0.970 mg /L <br />0.010 <br />97 90 110 <br />Sample ID: B13090647- 006CMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB - 8211529 <br />09/12/13 09:26 <br />Nitrogen, Nitrate +Nitrite as N <br />0.977 mg /L <br />0.010 <br />98 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 18 of 25 <br />