 The entire ARRC project involves the construction of an airport and seaport facility, as well as an industrial complex (ecozone), on land reclaimed from Manila Bay off Sangley Point; it is estimated to cost US$50 billion, involving among other things the reclamation of a total of 2,500 hectares of land and the construction of either an underwater tunnel to the SM Mall of Asia complex in Pasay or an extension of the Manila–Cavite Expressway to connect the project to Metro Manila.In December 2016, the ARRC also proposed to the Duterte administration a plan to develop the existing Danilo Atienza Air Base and its 2.4 km long runway into a facility for low-cost carriers and general aviation "while waiting for the new airport.