35 Ill. Adm. Code 203.119
Emission Baseline
Section 203
Section 203.119 Emission
Baseline
"Emission baseline"
means the starting point or reference level from which increases and decreases
in emissions are measured. The rules governing determination of emission
offsets, calculations of net emission increases, and evaluation under 35 Ill.
Adm. Code 202, Alternative Control Strategies specify the particular emission
baseline that applies for that purpose.