Environmental impact assessment for the proposed outer reef maintenance dredging project in Maafaru island, Noonu atoll

Abstract

The purpose of this document is to fulfil the requirements to get necessary environmental clearance from the Environmental Protection Agency (EPA) to carry out the proposed maintenance dredging and widening of the outer reef entrance of Maafaru Island, Noonu Atoll. The project is part of International airport development project in Maafaru, which has an existing EIA Approval. This EIA was meant to be an EIA Addendum to the project but did not qualify as an Addendum. As per EIA procedures, additional activities, although it is part of an existing project, cannot be addressed in an EIA Addendum, if the site is 500 m away from the approved project site. The proponent of the project is Regional Airports, Ministry of Tourism, Maldives. The main additional works proposed are to widen and deepen the existing outer reef entrance and to build a temporary sand bed to unload construction material and equipment on to the airport site. The changes are required to allow the Contractor’s barge to access the lagoon and the airport site for unloading. The existing reef entrance and lagoon depths are not suitable for the proposed barge to access. The proposed channel widening activity offers significant benefits to the local community and the airport. The channel is narrow and with the increase in traffic during airport operations, a widened channel offers a welcome development to the community, especially since the harbour redevelopment project is also ongoing on the island. The proposed sand bed offers no specific benefit to the community but is meant to be removed. To-date 3 EIAs have been prepared for this project for different proponents. This report takes note of the progressive changes that have taken place over the life of the project since 2009. The most recent report was approved 2 months ago. Hence, some of the baseline data used in this report uses the latest EIA results especially closer to the island. New assessments were conducted on the outer channel area. Most components of the proposed developments are generally in conformance to the laws and regulations of the Maldives. Dredging and Reclamation Approval is required from EPA. The two proposed work sites have been heavily modified in the past. The outer channel was dredged before and the proposed location for the temporary sand bed has been used to create a similar temporary sand bed by the previous developer. Thus the foot print of the impact is largely limited to previously dredged areas. Significant impacts associated with dredging and reclamation activities are present in this project. However, given the work is being undertaken on previously dredged foot prints and due to the short-time frame of works the overall impacts are expected to be moderate compared to an untouched area. One of the most critical impacts highlighted in the assessment is the potential for dredge waste to create further environmental issues, including continued turbidity due to erosion and deposition in the dredged channel. After discussions during Scoping Meeting, Island Council meeting and Proponent consultations, it has been recommended to avoid disposing the dredge waste on the side of the channel and to transport them back to the Airport Construction site to be used for reclamation. This will help reduce the overall reclamation foot print as envisaged in the original EIA. The Island Council also sought to address the possibility of creating a new channel instead of widening the existing channel. This was due to the presence of three patch reefs in front of (but 180 m away from) the channel. The Contractor and the Proponent identified that it may be difficult to accommodate a new component to the project that has significant budget implications. Alternative options have been evaluated for the most significant impacts. Options to avoid the temporary sand beds, create a new channel and to dispose channel dredge waste was considered. Among these a new option to dispose the dredge waste preferred, as explained above. Consultations were carried out with members of Noonu Maafaru Island Council. Island community of Maafaru, Regional Airports - Ministry of Tourism, and Ministry of Housing and Infrastructure. Maafaru island council and the public are in favour of this project since the project is beneficial for the community. An Environment Management Plan (EMP) and Monitoring Plan (MP) are presented in this report that addresses the new activities. However, the EMP and MP presented here must be combined with the programmes presented in the Original EIA. Overall the community of Maafaru, and island council were welcoming of this project. It offers benefits to the community and the airport during operations stage. Thus, this report concludes that the project should be implemented on grounds of very high socio-economic benefits.