The abandoned Sir John Carling Building at the Experimental Farm is to be demolished Sunday in a controlled explosion.

The former headquarters of Agriculture Canada was vacated several years ago over asbestos and other concerns. A $4.8-million demolition project began last year after Public Works officials balked at the estimated $57- million cost to renovate.

At 7 a.m. Sunday, the 11-storey building at 930 Carling Ave. will be imploded with high explosives and is expected to drop into its own footprint.

I am told...there will be blast sirens.

This will be the largest controlled demolition to ever take place in Ottawa.

Even bigger than this one