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_ ......... -......... ---. <br />wKw,energylab.tom ( Helena, MT 877-472-0711 - Billings, tAT 800-7354489 V Casper, WY 888-235-0515 <br />t. Ans"calfxasVencoVnca 1932 Gillette, WY 866-686-7175 Rapid City, SO 888-672-12251 College Station, TX 888-690-2Z1 B <br /> QA/QC Summary Report <br /> Prepared by Casper, W Y Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wat Work Order: C10110787 <br />Analyte Count Result Units RL %REC Low Limit High Limit RPD RPDLimit (dual <br />Method: E200.8 Batch: R140426 <br />Sample ID: LRB Method Blank Run: ICPMS2-C_101130A 11/30/10 12:24 <br />Uranium ND mg/L 1E-05 <br />Sample ID: LFS Laboratory Fortified Blank Run: ICPMS2•C_101130A 11130/10 12:29 <br />Uranium 0.0532 mg/L 0.00030 106 85 115 <br />Sample ID: C10110787.003AMS4 Sample Matrix Spike Run: ICPMS2-C_101130A 11/30/10 22:14 <br />Uranium 0.449 mg/L 0.00030 70 130 A <br />Sample ID: C1 01 1 0787-003AMSD Sample Matrix Spike Duplicate Run: ICPMS2•C_101130A 11/30/10 22:18 <br />Uranium 0.452 mg/L 0.00030 70 130 0.8 20 A <br />Qualifiers: <br />RL - Analyte reporting limit. A - The analyte level was greater than lour times the spike level. In <br />accordance with the method % recovery is not calculated. <br />ND - Not detected at the reporting limit. MDC - Minimum detectable concentration <br />Page 13 of 30 <br />I