APPROVAL AND PROMULGATION OF AIR QUALITY IMPLEMENTATION PLANS; STATE OF MONTANA; BILLINGS CARBON MONOXIDE REDESIGNATION TO ATTAINMENT AND DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES
Agency
Independent Government Entities
Subagency
Environmental Protection Agency
Type
Non-Major
Description
Final Rule
Priority
Routine/Info/Other
Date Published in Federal Register
Effective
Received
Control Number
123577
Fed. Reg. Number
67 FR 7966