assess future aviation needs across the Greater Golden Horseshoe to determine if there is a business case for a future airport, confirming that no decisions have been made on the development or timing of a potential future airport. On July 18, 2015, Transport Canada released proposed revised Pickering Airport Site Zoning Regulations for the retained lands, to ensure that development on surrounding lands remains compatible with a potential future airport site. The farmland all across the site continues to be farmed by tenants, as it has been since the land was expropriated. Controversy Pickering site selection The selection process of the site for the new airport was controversial as all candidate locations were opposed by the local residents. The 1974 Gibson inquiry did review the process and found "No new evidence to suggest that Pickering site was not appropriate" (pp. 29–32, Airport Inquiry Commission, Justice Hugh Gibson). Local residents and several newspapers disagreed. It was claimed that In June 1971, a federal Department of Transport team, having visited the Pickering site with a consultant, reported that a Pickering airport would disrupt community development plans and destroy "high quality farmland", that the rolling countryside would be costly to level, and that the town of Claremont would have to be phased out. Furthermore, the site offered no room for expansion. It was suitable for a two-runway airport, with four runways possible "but with considerably greater difficulty". In August 1971, Ontario planners came to similar conclusions, stating that a Pickering airport would prevent the creation of two planned towns called Brock and Audley, destroy an area designated as a provincial agricultural and recreational preserve, and "have a major influence on the operation of Toronto International". Despite the site's drawbacks, which had led to Pickering's elimination early in the original site selection process, the federal announcement of March 1972, described Pickering as an "excellent" site. This was not the case. The Pickering site was chosen because it was the only site left in the provincially preferred area east of Toronto, after Lake Scugog had been disqualified for being too far out, too costly to develop, too important a recreational area to disrupt, and too prone to poor weather. The Lake Scugog site had also been described as "unfavourable, as the majority of users, as well as Malton airport itself, are separated from the site by Metropolitan Toronto". The argument helped to eliminate Lake Scugog