Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 201 - PERMITS AND GENERAL PROVISIONS
Subpart A - DEFINITIONS
Section 201.103 - Abbreviations and Units
Current through Register Vol. 48, No. 38, September 20, 2024
a) The following abbreviations have been used in this Part:
Act |
Illinois Environmental Protection Act |
AER |
Annual Emissions Report |
Agency |
Illinois Environmental Protection Agency |
btu or Btu |
British thermal units |
CAA |
Clean Air Act |
CAAPP |
Clean Air Act Permit Program |
CO |
Carbon monoxide |
CO2e |
Carbon dioxide equivalent |
gal |
gallons |
HAPs |
hazardous air pollutants |
hp |
horsepower |
hr |
hour |
gal/mo |
gallons per month |
gal/yr |
gallons per year |
kPa |
kilopascals |
kPa absolute |
kilopascals absolute |
kW |
kilowatts |
l |
liters |
Mg |
megagrams |
m3 |
cubic meters |
MM |
million |
MW |
megawatts; one million watts |
NESHAP |
National Emission Standards for Hazardous Air Pollutants |
NMOC |
nonmethane organic compounds |
NOx |
nitrogen oxide |
NSPS |
New Source Performance Standards |
NSR |
New Source Review |
PBR |
permit by rule |
PM |
particulate matter |
PM10 |
particulate matter with an aerodynamic diameter less than or equal to 10 micrometers |
PM2.5 |
particulate matter with an aerodynamic diameter less than or equal to 2.5 micrometers |
PSD |
Prevention of Significant Deterioration |
psi |
pounds per square inch |
psia |
pounds per square inch absolute |
ROSS |
Registration of Smaller Sources |
SO2 |
sulfur dioxide |
TPY |
tons per year |
USEPA |
United States Environmental Protection Agency |
VOM |
volatile organic material |
yr |
year |
b) The following conversion factors have been used in this Part:
English |
Metric |
1 gal |
3.785 1 |
1,000 gal |
3.785 m3 |
1 hp |
0.7452 kW |
1MMBtu/hr |
0.293 MW |
1 psi |
6.897 kPa |