Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 244 - EPISODES
Subpart D - EPISODE STAGES
Section 244.164 - Criteria for Declaring a Red Alert
Current through Register Vol. 48, No. 12, March 22, 2024
The Director or his designated representative shall declare a red alert whenever:
a) Any red alert level is equaled or exceeded or any yellow alert level has been equaled or exceeded continuously for the proceding 24 hour period at any monitoring station; and
b) A yellow alert has been in effect for 4 hours in the area for which the red alert is to be declared; and
c) Atmospheric conditions, or expected contaminant emissions, are such that concentrations can reasonably be expected to persist for 12 or more hours; or
d) For ozone, atmoshperic condtions, or expected contaminant emissions, are such that concentrations can reasonably be expected to reoccur at a red alert level on the following calendar day.
