Delaware state law requires air quality permits for equipment which has the potential to discharge air contaminants into the atmosphere. State regulations (7 DE Admin. Code, 1102) establish permitting procedures and requirements.
The Division of Air Quality is working with the regulated community on a proposal to increase fees for Natural Minor (Regulation 1102) permits. Learn More
The Division of Air Quality suggests that applicants take advantage of a pre-application review process to ensure that final applications are both administratively and technically complete.
Division of Air Quality
State Street Commons, Suite 6A
100 West Water Street
Dover, Delaware 19904
Make checks payable to “State of Delaware”
The table below lists permit application forms by type and sector. Users should download the forms to their hard drive prior to completing.
Applications should be mailed to the Division of Air Quality, along with required permit fees. All checks should be made payable to: State of Delaware.
First time applicants must complete an Environmental Permit Application Background Statement. Operators of stationary generators must register their equipment with the Division of Air Quality, regardless of whether that equipment requires a permit to operate. Please submit a separate information form for each generator. There is no fee for this notification form.
Air Permit Application Process – Document providing a protocol to follow when permitting an air contaminant source in Delaware.
Stationary Source Impact Analysis – Document providing guidance in evaluating the impact of new or modified Stationary Sources.
NAAQS Background Concentrations (March 6, 2023) – Representative contaminant background concentrations in Delaware.
|Administrative||Administrative Information||AQM-1||Instructions||Required in All Applications|
|Diagram||Overall Process Flow Diagram||AQM-2||Required in All Applications|
|Process Equipment||Generic Process Equipment Application||AQM-3.1||Instructions||Equipment Specific|
|Process Equipment||Boiler Application||AQM-3.2||Instructions||Equipment Specific|
|Process Equipment||Generator/Engine Application||AQM-3.3||Instructions||Equipment Specific|
|Process Equipment||Coating Operations Application||AQM-3.4||Instructions||Equipment Specific|
|Process Equipment||Volatile Organic Storage Tank Application||AQM-3.5||Instructions||Equipment Specific|
|Process Equipment||Cold Solvent Cleaner (Degreaser) Application
Note: Regulations Updated (2021)
|Process Equipment||Silo Application||AQM-3.7||Instructions||Equipment Specific|
|Process Equipment||Used Oil Heater Application||AQM-3.8||Instructions||Equipment Specific|
|Process Equipment||Crushed Stone Equipment Application||AQM-3.9||Instructions||Equipment Specific|
|Process Equipment||Fines Crusher Application||AQM-3.10||Instructions||Equipment Specific|
|Process Equipment||Crematories Application||AQM-3.11||Instructions||Equipment Specific|
|Process Equipment||Printing Operations Application||AQM-3.12||Instructions||Equipment Specific|
|Process Equipment||Grain Terminal, Elevator, and Drying Application||AQM-3.13||Instructions||Equipment Specific|
|Control Device||Incinerator, Afterburner, and Oxidizer Application||AQM-4.1||Instructions||Equipment Specific|
|Control Device||Adsorption Equipment Application||AQM-4.2||Instructions||Equipment Specific|
|Control Device||Flare Application||AQM-4.3||Instructions||Equipment Specific|
|Control Device||Scrubber Application||AQM-4.4||Instructions||Equipment Specific|
|Control Device||Inertial and/or Cyclone Collector Application||AQM-4.5||Instructions||Equipment Specific|
|Control Device||Baghouse Application||AQM-4.6||Instructions||Equipment Specific|
|Control Device||Electrostatic Precipitator Application||AQM-4.7||Instructions||Equipment Specific|
|Control Device||Venturi Scrubber Application||AQM-4.8||Instructions||Equipment Specific|
|Control Device||Selective Catalytic Reduction (SCR), Selective Non-Catalytic Reduction (SNCR), Non-Selective Catalytic Reduction (NSCR), and Ammonia Injection Application||AQM-4.9||Instructions||Equipment Specific|
|Control Device||Settling Chamber Application||AQM-4.10||Instructions||Equipment Specific|
|Control Device||Knockout Application||AQM-4.11||Instructions||Equipment Specific|
|Emissions Information||Emissions Information||AQM-5||Instructions||Required in All Applications|
|Air Emissions Modeling||Air Emissions Modeling Application||AQM-6||Instructions||Optional|
|Emissions Information||CO2 Permit Application||AQM-7||Instructions||Equipment Specific|
Stack Parameter Information
The Division of Air Quality is updating information about where and how permitted facilities release emissions. The updated stack parameter information will help engineers make better use of spatial analysis tools to conduct modeling and solve problems. Permit-holders may use the Modeling Input Form and the Stack Coordinate Tutorial to collect and report data on their emissions and stacks.
Title V is an air pollution control program, based on federal law, designed to standardize air quality permits and the permitting process for major sources of air emissions across the country.
Smaller sources of air pollution, known as “Area Sources,” are smaller activities by businesses or facilities that, when measured across a group of sites, can accumulate to large amounts of pollution impacting Delaware’s air quality.
The Division of Air Quality partners with the Division of Waste and Hazardous Substances on the Vapor Recovery (VR) program which helps ensure the safe operation of vapor recovery systems at gasoline dispensing facilities. The Tanks Compliance Branch offers information and applications for Stage I and Stage II Vapor Recovery Permits.