The new hospital will encroach upon buffer zones.

The Rideau Canal UNESCO World Heritage Site and National Historic Site of Canada buffer zones, and the Central Experimental Farm National Historic Site of Canada buffer zone. 

It is not possible to integrate the medical centre and the Farm: House of Commons Ottawa March 10, 1986. Member of Parliament Barry Turner (Ottawa-Carleton)Progressive Conservative: "...The National Capital Commission will be making a fundamental planning and policy error if it recommends to the Government that the Mile Circle be used to house embassies. The local, regional and indeed national outcry of total opposition to this proposal should in itself be a proper, clear, concise message that it is making a serious mistake..."

"The Mile Circle land has been held in trust since 1904 by the federal Government as parkland...I cannot accept the argument that any development will be done in such a way as to maintain open spaces and a parkland setting. That is impossible since thousands of tons of concrete and steel will be sewn together by architects, engineers and construction workers...My professional background is in conservation and tourism development. I know what impact infrastructure can have on parkland. If parks are for people, and I truly believe they are, then you put any and all development outside of them."

The 22-acre Commissioners Park at Preston Street and Carling Avenue is part of the Greenbelt:

House of Commons Ottawa September 16, 2009. Member of Parliament Steven Blaney (Bellechase-Les Etchemins-Levis, Quebec) Conservative: "...Other properties found in the Greenbelt are Commissioners Park, where there is a display of over 100,000 tulips."

Greenbelt Coalition of Canada's Capital Region.Position Paper for the NCC's Greenbelt Master Plan Review, September 2010. Legal protection, Part 4.5: "Greenbelt land should have clearly defined boundaries protected by federal statutes, preventing commercial and residential development and other incompatible activities".