Air Quality Permit Information
Effective January 10, 2019, inquiries and correspondence regarding new permit applications, reporting, and compliance matters related to sites in Armstrong and Indiana Counties should be directed to DEP's
Northwest Regional Office. Questions on permit applications under review as of January 9, 2019, and pending enforcement matters for Armstrong and Indiana Counties should be directed to DEP's
Southwest Regional Office. Inquiries can also be directed to
Mining and Radiation Protection permits and programs are not affected by this regional office change.
Central and Regional Office Contact Info
For general Air Quality Permit questions, please call 717-787-4325. For more specific questions, contact the appropriate
Regional Office (PDF) serving you.
Proposed General Permits
Proposals with closed Comment Periods
Reasonably Available Control Technology (RACT)
Introduction to the National Emission Standards for Hazardous Air Pollutants
- Section 112(j) MACT "Hammer"
MACT Program Description (PDF)
Section 112 of the Clean Air Act establishes construction and reconstruction requirements for major sources of hazardous air pollutants.
Air Toxics & Risk Assessment
- State Plans Addressing Federal Emission Guidelines