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vntiw.energytab.coro Helena, M7 877-472-0711 + Billings, MT 800-735.4486 b Casper, WY 868-235-0515 <br />+ Anaryflralfrcauexe5lnce rs51 Gillette, WY 865.686-7175 - Rapid City, SD 888-672-1225 • College Station, TX 868-680-2218 <br />QA/QC Summary Report <br />Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwaider Min e Monitoring Program-Surface Wat Work Order: C10110690 <br />Analyte Count Result Units RL % REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB-6157799 <br />Sample ID: ICV Initial Calibration Verification Standard 11/30/10 09:24 <br />Nitrogen, Nitrate+Nilrite as N 30.3 mg/L 0.20 103 90 110 <br />Method: E353.2 Batch: B_R157799 <br />Sample ID: MBLK Method Blank Run: SUB-B157799 11/30/10 09:25 <br />Nitrogen, Nitrate+Nitrile as N ND mglL D.004 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-8157799 11/30/10 09:26 <br />Nitrogen, Nitrate+Nitrile as N 1.04 mg/L 0.010 106 90 110 <br />Sample ID: C10110690.007G Sample Matrix Spike Run: SUB-8157799 11/30/10 10:05 <br />Nitrogen, Nitrate+Nitrile as N 1.11 mg/L 0.010 105 90 110 <br />Sample ID: C10110690-007G Sample Matrix Spike Duplicate Run: SUB-6157799 11/30/10 10:06 <br />Nitrogen, Nitrate+Nilrite as N 1.10 mg/L 0.010 104 90 110 1.2 10 <br />Qualifiers: <br />RL - Analyle reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum delectable concentration <br />Page 24 of 39 <br />