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www.ene dsb.com � Helena, W 877-472 -0711 • Billings, W 800- 735 -4489 • Casper, WY 888- 235 -0515 <br />� <br />A*~'t� Gillette, WY 866 -686 -7175 • Rapid City, SD 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: 10/14/13 <br />Project: Schwartz GW 9/19/13 S27162 Work Order: C13090821 <br />Analyte Count Result Units RL 0/6REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB - 6212548 <br />Sample ID: ICV Initial Calibration Verification Standard 10/01/13 0845 <br />Nitrogen, Nitrate +Nitrite as N 22.2 mg /L 0.060 102 90 110 <br />Method: E353.2 <br />Sample ID: MBLK <br />Method Blank <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Nitrogen, Nitrate +Nitrite as N <br />1.00 mg /L <br />Sample ID: B13092042- 009DMS <br />Sample Matrix Spike <br />Nitrogen, Nitrate +Nitrite as N <br />0.947 mg /L <br />Sample ID: B13092042- 009DMSD <br />Sample Matrix Spike Duplicate <br />Nitrogen, Nitrate +Nitrite as N <br />0.946 mg /L <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />Run: SUB- B212548 <br />0.001 <br />Run: SUB- B212548 <br />0.010 100 90 110 <br />Run: SUB- B212548 <br />0.010 95 90 110 <br />Run: SUB - 8212548 <br />0.010 95 90 110 <br />ND - Not detected at the reporting limit. <br />Batch: B R212548 <br />10/01/13 08:46 <br />10/01/13 08:47 <br />10/01/13 09:43 <br />10/01/13 09:44 <br />0.1 10 <br />Page 15 of 21 <br />