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wvm.enorg ytab.com Helena, MT 877-472-0711 * Billings MT 800-735-4489 Casper WY 888-235-0515 <br />Answcal Fuauaaca Aaea 1852 Gillette, WY 866-686-7175 & Rapid City, SD 888-672-1225 . College Station TX 888-699-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 12/15/10 <br />Project: Schwartzwalder Water Sampling Program-Ground Water Work Order: C10110379 <br />Analyte Co unt Result Units RL %REC Low Limit High Limit RPD RPDLimit Dual <br />Method: E353.2 Analytical Run: SUB-13157265 <br />Sample ID: ICV Initial Calibration Verification Standard 11/16/10 09:15 <br />Nitrogen, Nitrate+Nitrite as N 30.4 mg/L 0.20 103 90 110 <br />Method: E353.2 Batch: B_R157265 <br />Sample ID: MBLK Method Blank Run: SUB-B157265 11/16/10 09:16 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.004 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-8157265 11/16/10 09:17 <br />Nitrogen, Nitrate+Nitrite as N 1.02 mg/L 0.010 104 90 110 <br />Sample ID: 810111060-011CMS Sample Matrix Spike Run: SUB-B157265 11/16110 13:08 <br />Nitrogen, Nitrate+Nitrite as N 1.02 mg/L 0.010 103 90 110 <br />Sample ID: 810111060-011CMSO Sample Matrix Spike Duplicate Run: SUB-8157265 11/16/10 13:09 <br />Nitrogen, Nitrate+Nitrite as N 1.01 mg/L 0.010 102 90 110 1.1 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDG - Minimum delectable concentration <br />ND - Not detected at the reporting limit. <br />Page 14 of 21