35 Ill. Adm. Code 215.106
Afterburners
Section 215
Section 215.106 Afterburners
The operation of any oil fired
or natural gas fired after-burner and capture system used to comply with this
Part of any section thereof is not required during the period of November 1 of
any year to April 1 of the following year provided that:
a) The operation of such devices is not required for purposes of
occupational safety or health, or for the control of toxic substances, odor
nuisances or other regulated pollutants; and
b) Such devices are operated for the duration of any period for
which an ozone advisory, alert or emergency has been declared pursuant to 35
Ill. Adm. Code 244.