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--anergylab.com Helena, MT 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515 <br />_ w Anaryt MDrva9auoa$keg 1952 Gillette, WY 866-686.7175 P Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 <br />QA/QC Summary Report <br />Client: Cotter Corporation Report Date: 09/27/10 <br />Project: Schwartzwalder Mine Work Order: C10080962 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit Qual <br />Method: E353.2 Analytical Run: SUB-8153521 <br />Sample ID: ICV Initial Calibration Verification Standard 09/08/10 08:32 <br />Nitrogen, Nitrate+Nitrite as N 30.8 mg/L 0.20 105 90 110 <br />Method: E353.2 Batch: B_R153521 <br />Sample ID: MBLK Method Blank Run: SUB-13153521 09/08/10 08:33 <br />Nitrogen, Nitrate+Nitrite as N ND mg/L 0.004 <br />Sample ID: LFB Laboratory Fortified Blank Run: SUB-6153521 09/08/10 08:34 <br />Nitrogen, Nitrate+Nitrite as N 1.02 mg/L 0.010 104 90 110 <br />Sample ID: B10082716-002DMS Sample Matrix Spike Run: SUB-6153521 09/08/10 08:57 <br />Nitrogen, Nitrate+Nitrite as N 1.03 mg/L 0.010 106 90 110 <br />Sample ID: B10082716-002DMSD Sample Matrix Spike Duplicate Run: SUB-B153521 09/08/10 08:58 <br />Nitrogen, Nitrate+Nitrite as N 1.04 mg/L 0.010 106 90 110 0.5 10 <br />Qualifiers: <br />RL - Analyte reporting limit. <br />MDC - Minimum detectable concentration <br />ND - Not detected at the reporting limit. <br />Page 29 of 44