Abstract
Life cycle assessment (LCA) was conducted for the Fukuoka Island City Project being undertaken in the eastern area of Hakata Bay. The analysis included coastline construction and reinforcement, dredging and reclamation works, and construction, operation and maintenance of the facilities and buildings to be built on the island. The inventory analysis for life cycle energy consumption (LCE) and carbon dioxide emission (LC-CO2) was accomplished by breaking down the construction processes and materials into parts for which relevant energy data were available. As for the items for which relevant energy data were not available, values reduced by I-O analysis were utilized as proximate values. Thus the environmental loading for each individual process was determined and the cumulative total was calculated.