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www.ene dob.com ( Helena, MT 877- 472 -0711 • Billings, MT 600 -735 -4489 • Casper, WY 888- 235 -0515 <br />Am 1032 J 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: 08/20/13 <br />Project: Schwartz GW 07/17/13 S27046 - S27047 Work Order: C13070682 <br />Analyte Count Result Units RL ° /.REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB- B208760 <br />Sample ID: ICV Initial Calibration Verification Standard 07/24/13 10:08 <br />Nitrogen, Nitrate +Nitrite as N 22.1 mg /L 0.060 101 90 110 <br />Method: E353.2 <br />Batch: B_R208760 <br />Sample ID: MBLK <br />Method Blank <br />Run: SUB- B208760 <br />07/24/13 10:10 <br />Nitrogen, Nitrate +Nitrite as N <br />ND mg /L <br />0.005 <br />Sample ID: LFB <br />Laboratory Fortified Blank <br />Run: SUB- B208760 <br />07/24/13 10:11 <br />Nitrogen, Nitrate +Nitrite as N <br />1.04 mg /L <br />0.010 <br />104 90 110 <br />Sample ID: 813071763 -001 GMS <br />Sample Matrix Spike <br />Run: SUB- B208760 <br />07/24/13 10:50 <br />Nitrogen, Nitrate +Nitrite as N <br />1.09 mg /L <br />0.010 <br />107 90 110 <br />Sample ID: B13071763 -001 GMSD <br />Sample Matrix Spike Duplicate <br />Run: SUB- B208760 <br />07/24/13 10:51 <br />Nitrogen, Nitrate +Nitrite as N <br />1.08 mg /L <br />0.010 <br />107 90 110 <br />0.6 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 16 of 24 <br />