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9 .ems.}-.I?rna fez <br />wiMrea?ergylab.com rNT 877-472-0711 • Bflltngs, MT 800-?35-4419 • Casper, WY 888-235-8515 <br />Ae?yXalE?xs9isc?3lioce Igi1 A6fizi66 ,7175 ! Rapid City, SD 818 672-1225 • college Station, IX 888-620.2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 04/25/11 <br />Project: Schwartz-GW 03/31/11 S25673 Work Order: C11040039 <br />Analyte Count Result Units RL %REC Low Limit High L imit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB-6163665 <br />Sample ID: ICV Initial Calibration Verification Standard 04/06/11 06:11 <br />Nitrogen, Nitrate+Nitrite as N 21.7 mg/L 0.060 100 90 110 <br />Method: E353.2 Batch: B_R163665 <br />Sample ID: B1 1040208-001 GMSD Sample Matrix Spike Duplicate Run: SUB-6163665 04/06/11 06:21 <br />Nitrogen, Nitrate+Nitrite as N 1.08 mg/L 0.010 100 90 110 0.2 10 <br />Sample ID: B11040208-001GMS Sample Matrix Spike Run: SUB-B163665 04/06/11 06:19 <br />Nitrogen, Nitrate+Nitrite as N 1.08 mg/L 0.010 100 90 110 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-B163665 04/06/11 06:14 <br />Nitrogen, Nitrate+Nitrite as N 0.994 mg/L 0.010 101 90 110 <br />Sample ID: MBLK Method Blank Run: SUB-6163665 04/06/11 06:12 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.10 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 12 of 19