Emission Inventories

Air Emissions Reporting On-Line (AERO)
Electronic system for permitted facilities to report air emissions.

General Information
An overview of estimation procedures for emission inventories and air permits.

Forms, pollutant lists & other tools
Access current emission inventory forms, instructions and other information about reporting emissions.

Emission Estimation Spreadsheets
Use these spreadsheets, developed by the NC DAQ Permits Section, to aid in the calculation of emissions.

Emission Inventories
Emission inventory data in Excel format for calendar years 2010 to current.

Emission Inventory Contacts
List of the Regional Emission Inventory Contacts and and how to reach them.

Introduction to EPA's Compilation of Air Pollutant Emission Factors
Find pertinent background and information related to estimation of emissions and appropriate use of the information. Factors for specific industries may be found by following the outline.

Specific Industry Guidance

Review guidance, citations, and/or assumptions for the following industries:

Frequently Asked Questions
Frequently asked questions about emission inventories.

Glycol Ethers
Browse a searchable database of glycol ether compounds regulated by the Clean Air Act.

Greenhouse Gas Emissions Calculations
Instructions for calculating greenhouse gas emissions.

Point Source Emissions
for permitted criteria and hazardous/toxic pollutants.

  • NC Emissions Summary Tool 
    includes criteria pollutant, hazardous/toxic pollutant and greenhouse gas emissions for 1993 to 2018.

  • NC Emissions Mapping Tool 2010
    Mapping utility that displays facility location and emissions; parses emissions by facility permit classification as well as by criteria, toxic and hazardous air pollutants.

Clean Air Interstate Rule (CAIR) Allowances / (EPA - CAIR)
Find information about annual and ozone season CAIR allowance allocations, allocations to new sources from the new unit set-aside (NUSA) and state reallocations of any remaining balances in the NUSA.

NOx Budget Information (EPA - NOx Budget Trading Program)
Find information about NOx budget allocations, preliminary allocations for new sources and documents pertaining to NOx budget program.

EPA's National-scale Air Toxics Assessment (NATA) for North Carolina
EPA's National-Scale Air Toxics Assessment (NATA) is a screening assessment that estimates inhalation health risk for cancer and non-cancer health effects for North Carolina.