The following lists the major work taking place currently at the site:
Freedom Tower:
Installation of tower-foundation steel columns (two cranes on site)
· Installation of tower-foundation steel columns (two cranes on site); superstructure reached grade in July 2008
· Pouring concrete for the foundation and rebar installation for core and sheer wall
· Utility installation and tie-ins
WTC East Bathtub:
· Excavation of the Tower Two site through October 2008; crews are working double shifts
· Concrete pours began at the Tower 4 site in July 2008
· Major excavation of the south half of the east bathtub (sites of Towers Three and Four) from July 2007 through February 17, 2008; Silverstein Properties's construction team is mobilized and preliminary construction is underway
· Structural support and excavation under the 1 train box, which runs through the WTC site along Greenwich Street
National September 11th Memorial and Museum:
· Slurry wall reinforcement
· The "Survivors Stairway" will be relocated to its permanent home in the underground Memorial by late 2008
· Steel installation began September 1, 2008
· Concrete installation begins in early 2009
· Memorial crews plan to remove the ramp into the WTC site by December 2008 to continue construction on the south footprint
· The World Trade Center Memorial Foundation announced on April 9, 2008 that it reached its $350 million private fundraising goal
Tower 4
· Excavation
· Foundation work including concrete pours
Tower 3
- Excavation; rock blasting through fall 2008
- Foundation work
130 Liberty Street/Deutsche Bank Building Deconstruction:
· Abatement crews are currently working downward
· Full decontamination is underway as of May 2008
Air-quality testing at the building continues, with 12 sampling sites in the building’s immediate vicinity. Air monitoring reports are available here; more information about air monitoring is available here and on the LMDC’s website.
Source: LowerManhattan.info