|PA-Allegheny County Health Department|
| ACHD Article XXI, Part A, Regulation 2101.20|
|General- Definitions |
State Effective Date
Final Federal Register Date
Federal Register Citation #
|79 FR 54|
|1. Added definitions (Section II.), with a SIP effective date of 8/23/05|
2. Added definitions (Section III.) , with a State effective date of 5/24/10 and a SIP effective date of 2/28/11.
3. 2. Addition of "PM2.5 standards." The State effective date is 5/24/10, and the SIP effedctive date is 2/3/14 (79 FR 54).