Azura-Edo Independent Power Plant Environmental Impact ... - IFC

Ref
#
Potential impact
Desired
Outcome
Description of mitigation
Performance
Indicator
Monitoring
Timing/
Frequency
Responsibility Estimated
Cost (USD)
3.2 Noise nuisance
impacts from
general operations
Reduce
noise
nuisance at
receptors
• Air conditioning/air flow requirements shall be designed
to take account of noise breakout;
• Exhaust stacks will be designed to meet a power level of
92 dB(A);
• Design an acoustic enclosure for the gas turbines with a
Hushclad double-skin enclosure with good door seals
which will be replaced regularly to meet the
specifications for 82 dB at 1 m from the source;
• The fitting of a silencer into the exhaust gas system;
• Design gas turbine building (including air conditioning,
walls, roof, windows and doors) to have a high noise
reduction rating and ensure that there are no significant
gaps;
• Configure plant layout and orientation to minimise noise;
• Use acoustic enclosure/ absorption materials in internal
walls;
• In cases where noise levels cannot be reduced below
guideline levels, the Project will investigate the relocation
of these households;
• Implementing design measures such as attenuators on
the stacks, cladding on the turbine building and/ or noise
barriers to reduce noise level requirements of 45dBA for
the four identified receptors; and
• Establish a grievance mechanism.
Noise levels
below IFC
limits
Noise
monitoring.
Details to be
agreed with
FMEnv prior
to operation.
Monthly
HSE
Coordinator,
Azura Power
with
subcontractors
if necessary
Cost
associated
with monthly
noise
monitoring
(approx 500
USD)
No other
costs
assuming
that further
noise
reduction
controls are
not needed
3.3 Terrestrial Soils
and Geology
including:
• Increased runoff
and potential
erosion
• Potential
contamination
from spills
Minimise
soil loss,
reduce
erosion and
decrease,
risk of
siltation of
water
resources
and risk of
contaminati
on
• No open ground left unpaved or rehabilitated and
revegetated.
• To the extent possible covering large areas of the site with
gravel (or similar material) to allow for greater
permeability particularly during heavy rains.
• Development and implementation of a waste
management plan.
• Effective operation of the wastewater treatment plant.
• Effluent flowing offsite to comply with FMEnv
requirements for disposal of effluent offsite.
Visual
inspection
Visual
inspection
and
photographic
record
Daily
HSE
Coordinator,
Azura Power
Part of HSE
Coordinator’
s duties