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

Impact Impact Description Phase Pre-mitigation
Significance
Decommissioning Insignificant
Negative
Soils and
Geology
Removal of soils during site clearance and
potential for contamination through spills
and incidents.
Increased soil erosion and surface run-off
particularly during heavy rains due to soil
disturbance.
Construction
Moderate
Negative
Summary of Mitigation and Enhancement Measures
• Develop detailed noise control plan, use temporary noise
barriers and use ‘low noise’ equipment (including alternative
reversing alarms), where possible;
• Staff training;
• Ensure periods of respite are provided in the case of
unavoidable maximum noise level events;
• Avoid dropping from heights and metal-to-metal contact;
• Avoid clustering of mobile plant near receptors and enforce rest
periods for unavoidable maximum noise events;
• Select ‘low noise’ equipment, or methods of work;
• Use most effective mufflers, enclosures and low-noise tool bits
and blades;
• Investigate use of alternatives to audible reversing alarms (such
as broadband noise emitting models) or configure to maximise
forward movements of mobile plant;
• Use alternatives to diesel/petrol engines and pneumatic units,
such as hydraulic or electric-controlled units, where feasible and
reasonable;
• Use temporary noise barriers for small equipment, where
required;
• Reduce throttle settings and turn off equipment and plant when
not used;
• Appoint Community Liaison Officer (CLO) and inform
potentially impacted residents of potential noise; and
• Regular inspection and maintenance of all plant and equipment.
• Develop and implement of a waste management plan;
• Low impact excavation, in-fill and trenching methods,
minimise bare ground and stockpiles and rehabilitate cleared
areas before wet season;
• Effective site drainage using cut-off drains, temporary drainage
channels;
• Use oil/ water separators and silt traps;
• Bund hazardous substances storage areas;
Residual
Significance
Insignificant
Negative
Moderate
Negative
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