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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