Environmental Assessment
Volume C-4.2
Slurry Pipeline
Fauna
Ambatovy Project
101
January 2006
Table 4.2-3 Watercourses Affected by the Slurry Pipeline Route
Habitat Type
Baseline
Case (km)
(a)
Impact Case
(Undisturbed)(km)
Impact Case
(Disturbed) (km)
(b)
Percent
Affected (%)
streams and rivers (km)
1,393
1,360
-33
-2.4
(a)
Based on average proposed pipeline route width of 50 m.
(b)
Value does not include impacts from side access roads, camps or laydown areas.
Residual Impact Classification
Residual impacts and environmental consequences of direct habitat loss to key
habitats as a result of construction and operation of the slurry pipeline are
presented in Table 4.2-4.
Low environmental consequences associated with site clearing are predicted for
all habitats because the magnitude of disturbance is low and local in extent,
although the effects will be long-term. Therefore, a low environmental
consequence is also forecast for wildlife species, including rare species that
occupy these habitats (Volume J, Appendix 2.2). The small areas of transitional
forest and wetlands cleared for the pipeline will be permanently lost as these
habitats cannot be recreated.
Table 4.2-4 Residual Impact Classification for Impacts Related to Direct Habitat
Loss
Component
Direction Magnitude Geographic
Extent
Duration
Reversibility Frequency Environmental
Consequence
Issue: Site Clearing
azonal forest
neutral
n/a
n/a
n/a
n/a
n/a
n/a
transitional forest
negative
low
local
long-term
irreversible
low
low
degraded zonal
forest
negative
low
local
long-term
reversible
low
low
primary zonal
forest
negative
low
local
long-term
reversible
low
low
marsh edge
neutral
n/a
n/a
n/a
n/a
n/a
n/a
wetlands
negative
low
local
long-term
irreversible
low
low
water
neutral
n/a
n/a
n/a
n/a
n/a
n/a
coastal
shrubland/
grassland
complex
(a)
negative
low
local
long-term
reversible
low
low
faunal species
negative
low
local
long-term
reversible
low
low
Issue: Change in Hydrology
watercourses
negative
low
local
short-term
reversible
low
low
(a)
Includes beach ridge habitat type.
n/a = Not applicable (neutral impacts not rated).
