35 Ill. Adm. Code 244.162
Criteria for Declaring an Advisory
Section 244
Section 244.162Â Criteria for
Declaring an Advisory
The Director or his/her
designated representative shall declare an air pollution advisory whenever:
a)Â Â Â Â Â Â Â Â An air stagnation advisory is received for any area within the
State; or
b)Â Â Â Â Â Â Â Â Any advisory or yellow alert level is equaled or exceeded at
any monitoring station; and
c)Â Â Â Â Â Â Â Â Atmospheric conditions, or expected contaminant emissions, are
such that concentrations can reasonably be expected to remain at or above the
advisory or yellow alert level for 24 or more hours; or
d)Â Â Â Â Â Â Â Â For ozone, atmospheric conditions, or expected contaminant
emissions, are such that concentrations can reasonably be expected to reoccur at
any advisory, or yellow alert, level on the following calendar day.