sentences:  In an effort to soften opposition to the reclamation project, the Government proposed that the reclaimed land above the underground transport infrastructure could be used to construct a world-class waterfront promenade.In October 2003, Greenpeace said that the Central reclamation would create 580,000 cubic metres of toxic silt, 63% of which was classified as "seriously contaminated" by the Environmental Protection Department.The activists were repelled when they attempted to collect mud samples from the Central reclamation site for analysis.