This would be handle through a specific permit issued by the state a facility is in. It will depend on the type of process, what you handle, age of site, and what you request.
"Environment Canada" is the name of the national environmental regulatory agency in Canada. You can contact them about the Canadian national air pollution regulations at:
Each of the Provinces in Canada also have an environmental regulatory agency. You didn't tell us what Province you live in, but I am sure you can find your Province's environmental regulatory agency with a Google search. Then you can contact them about the regulations that apply to your offgases.
Milton Beychok
(Visit me at www.air-dispersion.com)
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