Environmental Impact assessment for the proposed harbor maintenance in Narudhoo, Shaviyani Atoll

Abstract

The purpose of this document is to fulfil the requirements to get necessary environmental clearance from the Environmental Protection Agency to carry out the proposed harbour maintenance project in Narudhoo, Shaviyani Atoll. The proponent of this project is Ministry of Housing & Infrastructure. The main rationale for the project is to improve the access facilities of Narudhoo Island to facilitate improvement in the social and economic condition of the island. The island has a harbour and but has become shallow overtime. This project mainly involves maintenance dredging of the 65 m × 110 m harbour basin and disposing the dredge waste on the sides of the harbour. All project activities will be in conformance to the laws and regulations of the Maldives, and relevant international conventions that Maldives is party to. The key laws and regulations applicable to this project are: Environmental Protection and Preservation Act, Dredging and Reclamation regulation and Environmental Impact Assessment Regulation 2012. The island coastal environment has been modified due to the presence of the existing harbour. The coral cover is in moderately healthy condition. The dominant benthic substrate of the footprint is mainly sand and rubble. Significant impacts of this project during construction phase of the project are the potential impact of sedimentation on the marine water quality and consequent impact on marine life, potential impacts on ground water and the health and safety risks to construction workers. All these impacts can be minimized with proper mitigation measures recommended in the report The main mitigation measures include carrying out construction activities during low tide hours and calm weather and proper supervision of all activities by qualified personnel. The work schedule and duration will also be planned to avoid disruptive weather conditions and complete construction activities in the shortest time possible. The alternatives evaluated for the project are dredging methods and dredge waste disposal sites and alternative harbour sedimentation control measures. The “No Project” option has also been explored and this option is not deemed preferable, given the current condition of the harbour. An alternative sediment flow control measure has been proposed to minimise future deposition within the harbour but its implementation will depend on fund availability. The use of excavator on a barge is the preferred option for alternative dredging method, since it is the most common, practical and cost-effective method. An alternative site plan has been recommended for this Prepared by: CDE Consultancy Page|xi EIA for the Proposed Harbour Maintenance Project in Narudhoo Island, Shaviyani Atoll project, given the less than expected sand from dredging activities. Thus, alternative locations for stockpiling sand has been proposed, instead of reclamation. This project has strong support from the island community and all site plans have been seen and approved by the Island Council. Monitoring plan is designed to assess any changes to the coral reef environment of the island, coastal changes and depth variations of harbour area as well the marine water quality as these are the key areas that will be impacted from this project. The management plan for this project is designed to produce a framework for anticipated impacts, including practicable and achievable performance requirements and systems for monitoring, reporting and implementing corrective actions. In addition provide evidence of compliance to legislation, policies, guidelines and requirements of relevant authorities. In conclusion, this project has been designed in conformance to the relevant laws and regulations of Maldives. The most significant impacts are expected to be short-term impacts on the marine water quality, coral reef and lagoon bottom habitats. However, mitigation measures have been proposed to adequately minimise these significant impacts Prepared.