2024 PM2.5 Primary Annual NAAQS Designations - Pennsylvania Initial Designation and EPA Response

2024 PM_2.5 Primary Annual NAAQS Designations - Pennsylvania Initial Designation and EPA Response

• Pennsylvania Initial Designation Letter (pdf) (196.24 KB)
• Pennsylvania Initial Designation Supporting Document (pdf) (424.57 KB)
• Pennsylvania Initial Designation Appendix A (pdf) (696.59 KB)
• Pennsylvania Initial Designation Appendix B (pdf) (9.64 MB)
• Pennsylvania Initial Designation Appendix C-1 (pdf) (2.19 MB)  - Allegheny County Area
• Pennsylvania Initial Designation Appendix C-2 (pdf) (1.4 MB) - Greater Philadelphia Area
• Pennsylvania Initial Designation Appendix C-3 (pdf) (1.43 MB) - Harrisburg-Carlisle-York Area
• Pennsylvania Initial Designation Appendix C-4 (pdf) (1.69 MB) - Lancaster County Area
• EPA 120-Day Letter to Pennsylvania (pdf) (314.52 KB)