2012-04-19_REPORT - M1977004 (2)

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Pitch Reclamation Project Colorado Mined Land Reclamation Board — 2011 Annual Reclamation Report 7. MONITORING & RECLAMATION ACTIVITIES PLANNED FOR 2012 In addition to the continued monitoring of pit slope stability and water quality, Homestake continues to move forward with final closure and reclamation of the Pitch property. During 2012, the following activities are planned: • Continue to monitor the Tie Camp Creek Disposal Cell for depressions where water could pond, and manage the drainage off and around the cell; • Planting of tree seedlings in selected areas of the rock dumps and pits slopes; • Continue to monitor the reclamation work on the constructed wetlands located in the drainage area in the vicinity of the former RTP including placement of additional organic material (e.g. peat), transplanting cattails from similar elevations; and other enhancement activities to further promote sediment control; • Monitor the drainage channels on the east and south walls of the North Pit and the east wall of the South Pit and in other areas throughout the property and make improvements as necessary; • Clean out sediment traps in Indian and Tie Camp creeks; • Inspect and replace, if necessary, the pump in piezometer P -4 and install new level Troll 500, In- Situ level transducer in P -7; • Assess the area where the straw bales were placed in the North Pit in 2010 and install a small diversion ditch as necessary and remove straw bales and clean up area; • Continue to inspect and remove tree seedlings on the downstream face of the Sediment Embankment; • Continued noxious weed control management using Curtail with Surfactant; • Conduct monthly and quarterly monitoring and reporting pursuant to the CDPS permit at the POC SW -33 for water releases; • Conduct annual surveys of the slope monitoring monuments and inclinometers; • Inspect and monitor waste rock dumps and sediment control embankment; and • Continue to evaluate and remedy where possible any blockage in the older piezometers in the Indian Creek waste rock dump. • Continue to remedy erosion between the first and second drainage benches on the Tie Camp Waste Rock Dump; consider installing waddles to prevent erosion • Grade all roads for safe travel ways into and around mine site; and • Set up test for slope movement equipment May /June to determine its functionality and verify proper repair and calibration completed in December 2011 prior to retrieving inclinometer readings for the 2012 field season. Pitch 2011 Reclamation Finalreport 19Apr12.Doc 20