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

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