35 Ill. Adm. Code 202.110
Alternative Control Strategy (ACS)
Section 202
Section 202.110 Alternative
Control Strategy (ACS)
"Alternative control
strategy" means a specific program of emissions limitations and
requirements which is environmentally equivalent to that which would otherwise
be required by applicable statutes or regulations, and under which the owner or
operator of an emission source increases emissions of a regulated pollutant
beyond the emission baseline at one or more emission sources and
correspondingly reduces emissions of the same pollutant below the emission
baseline at other emission sources.