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lab <br />aner <br />w <br />+ <br />w com <br />Helena, MT 877 412-0111 • Billings, MT 808 735 4489 • Casper, WY 888 235-0515 <br />18 <br />. <br />gy <br />• ww <br />. <br />Aa*Ucz/frca8aaceSMca 1852 :1 Gillette, <br />MCI] <br />o WY 866-GBG-7175 • Rapid City, SO 888-672-1225 • College Station, TX 888-690-22 <br />Ig <br />r <br />QA/QC Summary Report <br /> Prepared by Casper, WY Branch <br /> ReportDate: 01 /19/11 <br />Client: Cotter Corporation Work Order: 010120711 <br />Project: Schwartzwalder Mine <br /> Result Units RL %REC Low Limit High Limit RPD RPDL[mit Qua[ <br />Count <br />Analyze Batch: 28630 <br />Method: E245.1 12/28/1011:07 <br />Run: CVAAC203101228A <br />Sample ID: 010120690-001BMS Sample Matrix Spike 115 <br />85 <br />Mercury 0.00531 mg/L O.OOD20 106 <br /> <br />le ID: 010120690-001 BMSD <br />Sam <br />Sample Matrix Spike Duplicate Run: CVAA_C203_101228A 12/28/10 11:08 <br />10 <br />4 <br />0 <br />p 0.00528 mg/L . <br />0.00020 106 85 115 <br />Mercury <br />C203_101228A 12/28/10 11:03 <br />Run: CVAA <br />Sample ID: MB-28630 Method Blank <br />_ <br />Mercury 1 E-05 mg/L 1 E-06 <br /> Laboratory Control Sample <br />Run: CVAA_C203_101228A 12/28/10 11:04 <br />Sample ID: LCS-28630 0.00542 mg/L 0.00020 108 90 110 <br />Mercury <br />Qualifiers: <br />ND Not detected at the reporting limit. <br />RL - Analyze reporting limit. <br />MDC - Minimum detectable concentration <br />Page 15 of 23