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

if suitable) to prevent potential contamination. These include areas
around gauges, pumps, sumps and loading/unloading areas.
• Ensure that the diesel storage tanks and components shall and will meet
international standards for structural design and integrity and provide
corrosion protection by cathodic protection inside steel tanks and piping if
required. Undertake periodic inspection for corrosion and integrity of
storage tanks, pipes and components and regular maintenance pipes,
seals, connectors and valves and other components. Equip tanks with spill
and overfill prevention devices (eg alarms, automatic shut-off devices and
catch basins).
• Construct stormwater channels and oilwater separators in diesel storage,
handling and transfer areas.
• Develop spill control and response plans to respond to spills and leaks.
• Develop and implement a monthly monitoring programme for sampling
and analysis of effluent released from the facility site in accordance with
local, national and World Bank requirements.
• Develop and implement monthly ongoing groundwater monitoring for
early detection of hydrocarbon leaks.
• The site will undertake monitoring of waste water discharge (prior to
discharge) to ensure that water quality remains within Nigerian, WHO
and World Bank limits. Any sludge that is produced will be disposed of as
hazardous waste to an appointed licensed waste disposal facility in Port
Harcourt.
With the implementation of the mitigation measures during construction, the
residual impact magnitude will be reduced to low-moderate but due to the
existence of sensitive receptors (ie communities using the local water
resources for water abstraction purposes) the residual impact on water
resources is still considered to be of minor significance.
The negative impact of groundwater use on groundwater resources will
remain minor.
8.4.3 Decommissioning
The following mitigation measures are recommended for the
decommissioning phase for the prevention of contamination of water
resources:
• Ensure proper placement of soil stock piles to reduce exposure of
sediment-generating materials to wind or water;
AZURA EDO IPP
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DRAFT EIA REPORT