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\ WWW.VWOab.com i Helena, MT 877 -472 -0711 * Billings, MT 800 - 735 -4489 * Casper, WY 888- 235 -8515 <br />' $ww 1W � 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: 07/30/13 <br />Project: Schwartz -GW 7/3/13 S27057 Work Order: C13070189 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDL,m,t 0 ua, <br />Method: E353.2 Analytical Run: SUB- B207878 <br />Sample ID: ICV Initial Calibration Verification Standard 07/10/13 09:20 <br />Nitrogen, Nitrate +Nitrite as N 22.0 mg /L 0.060 101 90 110 <br />Method: E353.2 <br />Batch: B R207878 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB- B207878 <br />07/10/13 09:22 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />0.005 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B207878 <br />07/10/13 09:23 <br />Nitrogen, Nitrate +Nitrite as N <br />1.03 mg /L <br />0.010 <br />103 90 110 <br />Sample ID: B13070577 -001 EMS <br />Sample Matrix Spike <br />Run: SUB- B207878 <br />07/10/13 12:20 <br />Nitrogen, Nitrate +Nitrite as N <br />1.13 mg /L <br />0.010 <br />99 90 110 <br />Sample ID: B13070577 -001 EMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB- B207878 <br />07/10/13 12:21 <br />Nitrogen, Nitrate +Nitrite as N <br />1.14 mg /L <br />0.010 <br />100 90 110 <br />0.3 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 14 of 20 <br />