AIR

Permits

About Air Permit Applications Minor Source General Emission Reduction Expedited Permit Planning and Assessment Insignificant Activity Notifications

Enforcement Surveillance Monitoring

Ambient Air Monitoring Program Ambient Air Monitoring Sites Air Monitoring Data Air Toxics Monitoring Enviroflash National Ambient Air Quality Temporary Located Community Ambient Air Monitoring Mobile Air Monitoring Lab (MAML)

Programs

Diesel Emissions Reduction Act Asbestos Lead Air Toxics Engineering notification and stack testing State Implementation Plans Emissions Inventory (ERIC) Clean Power Plan Motor Vehicle Inspection Program Stage II Vapor Recovery

Resources

Procedures Air Requirements Library Delegation of EPA Authority Small Business / Community Assistance Ozone

Forms

Air Permit Application Stack Test Scheduling

FAQ

Control of Natural Gas Releases

Short term releases of natural gas from pipelines and associated equipment are sometimes necessary when repairs are made. Prior approval for these discharges has normally been obtained by requesting a variance. Releases of natural gas will now be addressed through the Regulatory Permit process. See the Regulatory Permits page for more information.