the principal. Mark Groblewski of RAL was the only civilian given direct access to 270 Broadway, 86 Chambers Street, and 80 Chambers Street to continue construction in these buildings, in the restricted area surrounding Ground Zero, after the September 11 attacks. Groblewski also worked as a civilian volunteer assisting and directing industrial earth-moving equipment at Ground Zero. Floors 16 to 28 were converted to 39 condominium apartments in 2003 ranging in size from . Floors 2 through 7 comprise office space and 48 rental apartments occupy floors 8 through 15. The office space entrance is at 86 Chambers Street, and there are two residential entrances – on Broadway for the condominiums and on Chambers Street for the rental apartments. References Office buildings in Manhattan United States Army Corps of Engineers Manhattan Project sites 1930 establishments in New York City Buildings and structures completed in 1930 Broadway (Manhattan) Tribeca Civic Center, Manhattan