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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)


  • NESHAP's
    Introduction to the National Emission Standards for Hazardous Air Pollutants
  • 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

Other Information