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www.energylab.com Helena tdT 877-472-0711 • Billings MT 800-735-4489 v Caspar, WY 888-235-0515 <br />f <br />- r <br />* <br />MalyUcal&ra&oca Slare 1952 Gillette, YiY 865-686-7175 o Rapid City, 50 888-672-1225 - College Stahen, TX 888-690-2218 <br /> QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br />Client: Cotter Corporation Report Date: 01/05/11 <br />Project: Schwartzwalder Mine Monitoring Program-Surface Wat Work Order: C10110690 <br />Analyte Count Result Units RL % REC Low Limit High Limit RPD RPDLimit Qual <br />Method: D2036 Analytical Run: SUB-8157579 <br />Sample ID: ICV-1 Initial Calibration Verification Standard 11/22/10 OD:00 <br />Cyanide, Weak Acid Dissociable 0.143 mg/L 0.0050 95 90 110 <br />Method: D2036 Balch: B R157579 <br />Sample ID: C10110690-007H Sample Matrix Spike Run: SUB-6157579 11122110 13:28 <br />Cyanide, Weak Acid Dissociable 0.100 mg/L 0.0050 100 80 120 <br />Sample ID: C10110690-007H Sample Matrix Spike Duplicate Run: SUB-6157579 11122/10 13:30 <br />Cyanide, Weak Acid Dissociable 0.102 mg/L 0.0050 102 80 120 1,4 10 <br />Sample ID: LFS-2 Laboratory Fortified Blank Run: SUB-8157579 11/22110 00:00 <br />Cyanide, Weak Acid Dissociable 0.103 mg/L 0.0050 103 90 110 <br />Sample ID: MBLK-3 Method Blank Run: SUB-6157579 11122/10 00:00 <br />Cyanide, Weak Acid Dissociable 0.003 mg/L 0.002 <br />Qualifiers: <br />RL - Analyte reporting limit. ND - Not detected at the reporting limit. <br />MDC - Minimum detectable concentration <br />Page 16 of 39