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

9 CUMULATIVE IMPACTS
In theory, any development such as the Azura power plant may also be taking
place at the same time as other developments, causing impacts affecting the
same resources or receptors, such that there will be cumulative effects with the
proposed Project. The impacts of developments already underway or
committed (in particular, the neighbouring NIPP plant and the associated
construction of the substation) have been taken into account in modelling
future air and noise emissions and assessment of these impacts by including
them in the future baseline for the Project within this impact assessment.
Apart from the NIPP plant, research of relevant documents (eg the EIA for the
neighbouring NIPP facility) and consultations with local and state authorities
has not identified any other significant future developments whose
cumulative impacts should be considered in this ESIA.
9.1 AIR QUALITY
The proposed Azura IPP plant is located adjacent to the NIPP plant, which is
currently under construction and during operation will release similar
emissions to that of the Azura Edo IPP. As such, an assessment of the
cumulative air quality impacts will need to understand the impacts related to
the operation of both plants.
Based on the limited public information about the details of the design of the
neighbouring NIPP plant, it has been assumed that the plant and emissions
and impacts will be the same as that of the Azura Edo IPP. This is considered
to be a reasonable assumption, as both power plants operate on natural gas
and are of a similar production capacity. The assessment of cumulative
impacts was performed by modelling the emissions from both plants. The
results of the assessment of cumulative impacts are presented in Figure 9.1 and
Table 9.1 below.
Cumulative impacts from the Project and neighbouring NIPP have been
quantified for NO x (Table 9.1), but not for CO, as these levels are considered to
be very low and not associated with significant impacts on air quality. The
cumulative dust impacts are also expected to be low since the construction
phase for the NIPP will be completed once the construction of the Azura Edo
IPP is initiated.
AZURA EDO IPP
DRAFT EIA REPORT
9-1