New York City Transit awarded the joint venture of Slattery Skanska and Gottlieb Skanska a $37 million contract to construct two new vent plants for the 1/9 7th Avenue subway line in Lower Manhattan. Constructing the two new vent plants required extensive underground utility relocation and restoration, design and installation of excavation support systems (steel sheeting) and roadway decking, soil stabilization, concrete and steel construction and extensive mechanical, electrical and plumbing components.

Located a few blocks from Ground Zero, the Park Place plant features three 150 HP fans and the Albany Street plant houses two 200 HP fans. The joint venture designed and installed the protective shielding between the fan plants and the subway tunnels. The shielding was installed during night and weekend track outages.  The scope of work also included demolition and rebuilding of the existing ventilators, which were damaged during the attacks of 9/11. Both of these activities were performed during general orders.

A project of this nature normally takes four years but because of community and other constraints, an aggressive schedule was required to complete work in half the time. Both plants were under construction simultaneously in order to meet the project completion milestone dates of 16 months for the restoration of both streets, and substantial completion of 23 months.