Environmental Assessment
Volume C-6
Slurry Pipeline
Reclamation and Closure
Table 6.1-1 Potential Issues and Proposed Mitigation for Slurry Pipeline
Construction (continued)
Ambatovy Project
206
January 2006
Project Component
Potential Issue
Proposed Mitigation
vegetation
loss/alteration of vegetation
communities
- RoW width will be minimized where possible
- use of existing clearings where possible
- construction adjacent road row reduces required clearing area
- natural regeneration promoted through rollback, seeding as
required off of road surface
loss/alteration of rare plants
- use of existing clearings, where possible
loss/alteration of timber resources
- RoW width will be minimized where possible
- use of existing clearings where possible
- merchantable timber will be salvaged
introduction of weed or invasive
species
- natural revegetation will be promoted
- reclamation seed mix will minimize weeds
wildlife
direct habitat loss
- RoW width will be minimized where possible
- use of existing clearings where possible
- sensitive habitat to be avoided by RoW routing
increased fragmentation of habitat
- any maintenance roads to be adjacent to pipeline
- vegetation regeneration will provide new habitat
- sensitive habitat was avoided by road routing
indirect habitat loss due to sensory
disturbance
- encountered wildlife will be given the right of way
physical barriers to wildlife
movement
- openings will be left in slash piles, and soil piles, and trench
plugs left to allow wildlife movement
increased wildlife mortality and
harassment from predation and
poaching
- wildlife harassment will not be tolerated
- encountered wildlife will be given the right of way
hydrology
alteration of wetlands drainage
patterns and function
- route selection to avoid wetlands areas, where possible
removal of vegetation from
watercourse and/or modification of
watercourse bed and banks can
result in increased erosion and
sedimentation
- preservation of riparian vegetation and soil by using appropriate
crossing methods at sensitive watercourses
- promotion of revegeation in disturbed riparian areas
- soil protection techniques and devices (e.g., roll-back, diversion
berms and revegetation) will be used as appropriate
increased sedimentation directly
from instream activity
- crossing technique designed according to watercourse
sensitivities
aquatic resources
direct disturbance, alteration or loss
of fish habitat in watercourse
- crossing techniques designed to account for fish sensitivities
- instream activity will be completed as quickly as possible
- temporary bridges will be used as appropriate
- bridge pilings will be installed outside the watercourse channel
increased sedimentation from
disturbance to watercourse bed
bank/top of bank
- RoW width will be minimized at watercourse crossings
- riparian vegetation will be preserved where possible
- disturbed banks will be restored to natural contour and stabilized
reduced water quality due to spills
- safe materials handling and storage methods will be used
- spill response equipment will be readily available
- spills will be isolated and cleaned-up immediately
