General Information 

Get an overview of emissions estimation for emission inventories and air permits. 

AERO 

Air Emissions Reporting On-line; system for reporting air emissions electronically.  

Forms, pollutant lists & other tools 

Access current emission inventory forms, instructions, and other information about reporting emissions. 

Emissions Estimation Spreadsheets 

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

Introduction to EPA's Compilation of Air Pollutant Emission Factors (AP-42)

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: 

• Asphalt, Hot Mix 

• Animal Operations 

• Cotton Gins 

• Polyester Resin Plastic Products Fabrication 

• Rendering 

• Wood, Generation and Combustion of "Waste" 

Other Industries to be added later as resources and information (i.e. specific NC guidance) allow. 

 Frequently Asked Questions

Frequently asked questions about the emission inventory

Emission Inventory Contacts

List of the Regional Emission Inventory Contacts and their contact information.

Point Source Emissions

• NC Emissions Summary, includes criteria pollutant, hazardous/toxic pollutant and greenhouse gas emissions. 

• CY2010 Reported and Assumed Emission Inventory; This Excel spreadsheet includes all CY2010 emissions reported and reviewed by January 2012 as well as assumed (most recent previously reported) emissions for all permitted facilities that operated in CY2010. 

• CY2011 Reported and Assumed Emission Inventory; This Excel spreadsheet includes all CY2011 emissions reported and reviewed by January 2013 as well as assumed (most recent previously reported) emissions for all permitted facilities that operated in CY2011.

Information about the emissions data is included on the Explanation tab for both of these Excel spreadsheets or you can contact Tammy Manning by phone at 919-707-8717 or by email at tammy.manning@ncdenr.gov. 

• 1990-2005 Point Source Emissions for permitted criteria and hazardous/toxic pollutants. 

 Glycol Ethers 

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

Greenhouse Gas Emissions Information

• Instructions for calculating and voluntarily reporting greenhouse gas emissions 

• Annual Emissions Reporting Rule Status 

• Find information about Greenhouse Gases

Clean Air Interstate Rule (CAIR) Allowances 

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 

Find information about NOx Budget allocations, preliminary allocations for new sources and documents pertaining to NOx Budget Program.