Pulacayo Project Feasibility Study - Apogee Silver

Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report
090644-3-0000-20-IFI-100
Implementation of the Plan of Assimilable Domestic Solid Waste Management,
considering the implementation and operation of a manual sanitary landfill, implement
recycling programs and reducing the generation of solid waste.
Implementation of an accumulation Plan of smaller volume waste, considering the use of
deposits or fills of sterile material with all appropriate environmental control measures and
promoting re-vegetation in the waste deposit, once the deposit is closed.
Application of closure and rehabilitation plan that considers encapsulation of sterile
material and tails with topsoil after completion of the project life.
Canalization and DAM directness to water reservoir.
20.4.1.3 Water
The water factor identified 40 negative impacts, of which only one is marked as Critical being the
remainder as mostly Moderate.
The impacts rated as important are:
Generation of acid mine water.
Alteration of surface water regime.
Generation of acidic water from rock dumps.
Infiltration of rainwater through the waste rock dumps to the underground
Risk alteration of the quality of ground water by filtering pollutants in the tailings dam area
(PDC).
Preventive measures are aimed at:
Perform acidic water canalization to the water reservoir: In case of producing mine acid
water by drilling by layers or water mass or when it reaches 100 meters of depth, which is
considered the water table, this Water must be channeled to the water reservoir where it
can be re-circulated for the concentration process in the plant.
A recirculating water system will be implemented for the plant, this would promote the
reuse of the process water and the water captured by the reservoir.
The material from cuts and/or sterile materials should be stored in dried deposits arranged
at an appropriate distance of 300 meters surrounding watercourses.
The tailings disposal area must be an area with low permeability characteristics. Before
tailings facility starts receiving paste, a compaction should be performed and if necessary
waterproofing the sector with clay, obtaining the material from nearby sources. This
measure will be analyzed during the design of the tailings dam facility.
20.4.1.4 Fauna
The major impacts identified for this factor are:
Disturbance to terrestrial and aquatic fauna.
Destruction and/or modification of habitat.
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