Craig Shantz, the company's director of environmental management, said that window was changed after the company cited increased need for the dredging because of its role in removing and disposing of debris from the site of the World Trade Center.
Federal officials defended the exceptionally high cost — so far about $177 million for the nearly one million cubic yards of debris handled by the Army Corps — saying it was justified by the complicated assignment of quickly disposing of debris in the midst of a major urban area.
I let the water run a bit, then removed, cleaned and reinserted the aerator — the little screen inside the spigot — to dispose of any debris inside the new works.
Because the government has not yet decided where rubble should be disposed of, less than 5% of the more than 20m cubic metres of debris from the quake has been cleared.
Civil engineering-related construction and demolition debris is an important source of waste disposed of in municipal solid waste landfills.
The federal government would be required to prepare timetables for the dams' removal and plans to reduce cost overruns and dispose of sediment and debris.
The Army Corps of Engineers approved a permit in 2007 to blast 400 feet off the hilltops here to expose the rich coal seams, disposing of the debris in the upper reaches of six valleys, including Pigeonroost Hollow.
Macrophages not only engulf pathogens but also help the healing process by disposing of cellular debris which accumulates from destroyed tissue cells and neutrophils that self-destruct after ingesting microorganisms.
Disposing of such debris is normally the role of the microglia, a type of brain cell.
Under a microscope, their fat cells are surrounded by white blood cells called macrophages, the dump trucks that engulf and dispose of pathogens and cellular debris.
