The list of problem buildings is much larger than KTH + LSB.
"Elevated lead levels have been recorded in parts of:Campus Services Building, Nuclear Research Building, Life Sciences Building, T-13, Ivor Wynne Centre, Kenneth Taylor Hall, the third floor of Gilmour Hall, the Tandem Accelerator Building and in University Hall."
http://dailynews.mcmaster.ca /worth....cfm?I D=5780
The places that met provincial guidelines are:
Alumni House (formerly the President's Residence)
Mills Library
Nuclear Reactor
Alumni Memorial Building
Applied Dynamics Laboratory
Divinity College
Psychology Building
David Braley Athletic Centre
parts of the Ivor Wynne Centre
John Hodgins Engineering building
DeGroote School of Business
Chester New Hall
Togo Salmon Hall
first and second floors of Gilmour Hall
Hamilton Hall
H.G. Thode Library
A.N. Bourns Science Building
E.T. Clarke Centre
Burke Sciences Building
The Refectory Building
Biology Greenhouse