New Source Review - Air Emission Source Details

New Source Review - Air Emission Source

General Info - Statewide License

Portions of Maryland have been designated as ozone non-attainment areas, which means that ozone levels in the ambient air occasionally exceed federal air quality standards. Air is considered unhealthful to breathe when federal air quality standards are exceeded. Therefore, any new major stationary source that will discharge significant amounts of volatile organic compounds (VOCs), oxides of nitrogen (NOx) or fine particulate matter (PM – 2.5) must obtain a New Source Review (NSR) approval prior to construction.

  • s

    Approval time

  • $20,200.00

    Application cost

Obtaining the License

Ready to get your license? - Steps, Requirements, and Documents

  1. Applicants should check with county zoning authorities to see whether they need zoning approval.

Apply for the License

Ready to apply?

Maintaining Your License

Renewal and maintenance -

Maintaining your License (aka Related forms/requirements to maintain License/stay in good standing)

  1. This is a one-time approval, as long as conditions do not change, i.e., sources of air emissions are not modified, replaced or moved or new equipment is installed.


License Issuer - Information

Who issues the license?

Maryland Department of Environment

Contact Information

Justin Hsu or William Paul


Tel: (410) 537-3846


Why the License is required?

 The primary purpose for obtaining this approval is to ensure that new major sources will not worsen existing ozone levels or impede the State’s efforts achieve compliance with the federal ozone and fine particulate standard.

Legal Authority

What laws and regulations give Maryland Department of Environment the legal authority to issue this approval?

FEDERAL: Clean Air Act, Subchapter I, Part D, 42 USC sec. 7501 et seq.

STATE: Environment Article, Title 2, Subtitle 4; COMAR and 12; COMAR 26.11.17.