2017-04-14_REPORT - M1977004

• Permit No: M1977004
• IBM Index Class Name: REPORT
• Doc Date: 4/14/2017
• Doc Name: Annual Fee/Report/Map
• From: Barrick Gold
• To: DRMS
• Annual Report Year: 2017
• Email Name: DMC
• Media Type: D
• Archive: No

Pitch Reclamation Project Colorado Mined Land Reclamation Board —2016 Annual Reclamation Report
7. MONITORING AND RECLAMATION ACTIVITIES PLANNED FOR 2017
In addition to the continued monitoring of pit slope stability and water quality, HMC continues to move
forward with final closure and reclamation of the Pitch property. During 2017, the following activities are
tentatively scheduled or planned:
• Continue to monitor the Tie Camp Disposal Cell for depressions where water could pond, and
manage the drainage off and around the cell.
• Inspect drainage and erosion repairs on the upper benches of the Tie Camp Rock Dump and the
groin area on the west side of the Indian Rock Dump.
• Continue to monitor the constructed marsh area located in the drainage area in the vicinity of the
former RTP and on the small sediment settling basins constructed upgradient from the Sediment
Control Pond, 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 Mine area and in other areas throughout the property and make improvements as
necessary. Currently, the water in the east and south wall drainage channels is diverted into the
North Pit Lake. In early summer 2017, this drainage water will be redirected to continue along the
existing drainage channel,which will send the water around the North Pit Lake and into Indian
drainage near the constructed marsh area.
• Clean sediment traps in the Indian and Tie Camp drainages above the Sediment Control Pond.
• Install transducers in select piezometers(including but not limited to IC-10300R and P-11)to
obtain additional water level readings within the underground mine workings and Indian Rock
Dump during and following field activities in support of establishing the LPL for uranium.
• Conduct manual water level readings in the piezometers in the Indian Rock Dump.
• Inspect and maintain the diversion ditch between the 10,800 and 10,600 benches on the east wall
of the North Pit.
• Inspect and monitor the Sediment Control Pond embankment, including surveying the
monuments, inspecting for seepage, removing tree seedlings on the upstream and downstream
face of the embankment, cleaning the debris trap above the outlet pipe, and repairing rill erosion
as need.
• Continue noxious weed control management using Milestone with Telar XP and Escort XP w/R-
11 Activator.
• Conduct monthly and quarterly monitoring and reporting in accordance with the CPDS permit.
• Conduct annual surveys of the slope monitoring monuments and inclinometers.
• Grade roads for safe travel into and around mine site.
• Evaluate approaches to demolish and remove the sand filtration plant located near the toe of the
Sediment Control Pond embankment including review by the Engineer of Record due to pipe
penetration associated with the embankment.
Building on the success of the 2015 and 2016 pilot tests, the following field activities are planned for 2017
to advance the BMP evaluation and design and establish the LPL for uranium:
• Field demonstration-scale phosphate-based injections into the underground mine workings and
Indian Rock Dump.
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