Ejohwomu IJ. A Study of Risk Management Practices in the Construction Industry. M.Sc Thesis submitted to the University of Wolverhampton. 2014.
Journal Title: JOURNAL OF ADVANCED RESEARCH IN CONSTRUCTION AND URBAN ARCHITECTURE - Year 2018, Vol 3, Issue 3
Abstract
Dredging operations are necessary for creation, draft enhancement and maintenance of navigable channels for port and harbor activities, for removal of contaminated sediments, mining from sea, and creation of marine parks, among others. The dredged sediments may be utilized for creation of tidal flats, or may be disposed at on-land or oceanic sites. Management of dredging operations, as well as assessment and disposal of dredged material is an involved process as it may have an adverse impact on the marine and coastal environment and its ecosystems due to changes in water depths, bottom morphology, or current velocity. Other consequences like erosion and sedimentation, the destruction of habitats, and impact on water quality such as increased turbidity also have to be evaluated. For toxic and hazardous sediments, issues like accumulation within fishery resources have to be considered. The scheme of sediment management has to be performed under the framework of local regulations pertaining to coastal zone management and land-use. The various stakeholders include environment activists, port authorities, vessel owners, local inhabitants, fishing communities, and tourism agencies among others. Multi Criteria Decision Analysis (MCDA) has been successfully applied to such multi faceted environmental problems, including assessment and selection of suitable windows and remediation alternatives for dredging operations. Stakeholder involvement and participation in the decision making procedure will improve efficiency of the remedy selection process and subsequent implementation. Application of MCDA in managing dredging and disposal of sediments is advocated in this article.
Authors and Affiliations
Saha Dauji
Keywords
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