35 Ill. Adm. Code 201.151
Design of Effluent Exhaust Systems
Section 201
Section 201.151 Design of
Effluent Exhaust Systems
a) No person shall cause or allow the operation of an emission
source or of air pollution control equipment without providing one or more
stacks or vents that are designed to prevent the concentration of any air
contaminant from:
1) Exceeding any applicable ambient air quality standard, either
alone or in combination with air contaminants from other sources; or,
2) Causing or tending to cause air pollution, either alone or in
combination with air contaminants from other sources; or,
3) Exceeding the emission standards and limitations of subchapter
(c) of this Chapter.
b) Exception. This rule shall not apply to emission sources,
such as stock piles of particulate matter which, because of the disperse nature
of such emission sources, cannot reasonably be expected to be emitted through a
stack.