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www.energylab.com Helena, MT 877-472-0711 . Billings, MT 800-735-4489 , Casper, WY 888-235-0515 <br />`. AaalylMErcettaceSince 1952 Gillette, WY 866-686-7175 • 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 />i <br />Method: E365.1 Analytical Run: SUB-6153383 <br />Sample ID: ICV Initial Calibration Verification Standard 09/03/10 13:39 <br />Phosphorus, Total as P 0.224 mg/L 0.0050 90 90 110 <br />Method: E365.1 <br />Sample ID: MB-48774 Method Blank Run: SUB-6153383 <br />Phosphorus, Total as P ND mg/L 0.005 <br />Sample ID: LFB-48774 Laboratory Fortified Blank Run: SUB-6153383 <br />Phosphorus, Total as P 0.0910 mg/L 0.0050 91 90 110 <br />Sample ID: B10082694-017DMS Sample Matrix Spike Run: SUB-B153383 <br />Phosphorus, Total as P 0.119 mg/L 0.0050 95 90 110 <br />Sample ID: 610082694-017DMSD Sample Matrix Spike Duplicate Run: SUB-8153383 <br />Phosphorus, Total as P 0.122 mg/L 0.0050 98 90 110 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />2.5 <br />Batch: B48774 <br />09/03/10 13:42 <br />09/03/10 13:43 <br />09/03/10 14:00 <br />09/03/10 14:01 <br />10 <br />Page 30 of 44