AB

Acetone Blank

ACCI

Air/Compliance Consultants, Inc.

ACFM

Actual cubic feet per minute

ACGIH

American Conference of Governmental Industrial Hygienists

AEI

Annual Emission Inventory

AIHA

American Industrial Hygiene Association

AIMS

Air Information Management System

AQAP

Air Quality Attainment Plan

ASTM

American Society for Testing and Materials

AWMA

Air and Waste Management Association

BACT

Best Available Control Technology

BADT

Best Available Demonstrated Technology

BAT

Best available technology

Btu

British thermal unit

C₃H₈

Propane

CEM

Continuous Emission Monitoring

CEMS

Continuous Emission Monitoring System

CERCLA

Comprehensive Environmental Response, Compensation and Liability Act of 1980

CES

Category of Emission Source

CFC

Chlorofluorocarbons

CFR

Code of Federal Regulations

CH₄

Methane

Cl₂

Chlorine

CMAQ

Congestion Mitigation and Air Quality

CMP

Congestion Management Program

CNG

Compressed Natural Gas

CO

Carbon monoxide

CO₂

Carbon dioxide

cog

Coke oven gas

COGHR

Coke oven gas heat input

DACF

Dry actual cubic feet

DACM

Dry actual cubic meters

DE

Destruction efficiency

DSCF

Dry standard cubic feet

DSCFM

Dry standard cubic feet per minute

EPA

Environmental Protection Agency (United States)

EtO

Ethylene oxide

FCAA

Federal Clean Air Act

FCAAA

Federal Clean Air Act Amendments

FFV

Flexible Fuel Vehicle

FROG

Fraction Reactive Organic Gases

FPM₁₀

Fraction particulate matter less than 10 microns in diameter

ft/sec

Feet per second

FTIP

Federal Transportation Improvement Program

FTP

Federal Emissions Test Procedure

g

Grams

GC

Gas chromatography

GC/TCD

Gas Chromatography/Thermal Conductivity Detection

gpm

Gallons per minute

Gr/DSCF

Grains per dry standard cubic feet

H₂S

Hydrogen sulfide

H₂SO₄

Sulfuric acid

HAP

Hazardous Air Pollutant

HC

Hydrocarbons

HCl

Hydrochloric acid

Hg

Mercury

HHV

Higher heating value

hp

Horsepower

IC

Ion chromatography

in H₂O

Inches of water

in Hg

Inches of mercury

LAER

Lowest Achievable Emission Rate

lb/hr

Pound per hour

lb/MMBtu

Pounds per million

LNG

Liquefied Natural Gas

LPG

Liquefied Petroleum Gas

m

Meter

m³

Cubic meters

M

Thousand

MACT

Maximum Achievable Control Technology

mg

Milligram

mg/g

Milligrams per gram

mL

Milliliter

MM

Million

MMBtu

Million British thermal units

MMSCFD

Million standard cubic feet per day

MNOC

Maximum normal operating capacity

MSCF

Thousand standard cubic feet

N₂

Nitrogen

NAAQS

National Ambient Air Quality Standards

NaO₄

Sodium hydroxide

NDIR

Non-dispersive infrared

NDO

Natural draft opening

NEPA

National Environmental Protection Act

NESHAPS

National Emission Standards for Hazardous Air Pollutants

NH₃

Ammonia

NMEVOC

Non-methane, non-ethane volatile organic compounds

NO

Nitric oxide

NO₂

Nitrogen dioxide

NO_X

Oxides of nitrogen

NSPS

New Source Performance Standards

NSR

New Source Review

O₂

Oxygen

O₃

Ozone

OVA

Organic Vapor Analyzer

PADEP

Pennsylvania Department of Environmental Protection

Pb

Lead

PEC

Pushing Emission Collection

PEI

Planning Emission Inventory

PEL

Permissible exposure limit

PM

Particulate matter

PM₁₀

Particulate matter less than 10 microns in diameter

ppb

Parts per billion

pphm

Parts per hundred million

ppm

Parts per million

ppm_dv

Parts per million by dry volume

ppm_v

Parts per million by volume

psi

Pounds per square inch

PSI

Pollution Standards Index

psia

Pounds per square inch absolute pressure

PST

Performance standard test

PTE

Permanent total enclosure

PVC

Polyvinyl chloride

RA

Relative Accuracy

RACT

Reasonably Available Control Technology

RAP

Recycled asphalt product

RAP

Regulated air pollutants

RATA

Relative Accuracy Test Audit

RCRA

Resource Conservation and Recovery Act

RM

Reference Method

SARA

Superfund Amendment and Reauthorization Act

SCF

Standard cubic feet

SCFM

Standard cubic feet pr minute

SCM

Standard cubic meters

SCR

Selective Catalytic Reduction

SIC

Standard Industrial Classification Code

SIP

State Implementation Plan

SO₂

Sulfur dioxide

SO₄

Sulfates

SO_X

Oxides of sulfur

Std

Standard

SVOC

Semi-volatile organic compounds

TCD

Thermal Conductivity Detection

THC

Total hydrocarbons

TOC

Total organic compounds

TOG

Total organic gases

tpd

Tons per day

tph

Tons per hour

tpy

Tons per year

TSP

Total suspended particulates

ug

Microgram

ug/m³

Micrograms per cubic meter

USEPA

United States Environmental Protection Agency

VOCs

Volatile organic compounds

VRS

Vapor Recovery System