US Codex
C.F.R.
Legal Codes
United States Code
U.S.C.
Federal statutory law
Code of Federal Regulations
C.F.R.
Federal administrative regulations (eCFR)
Public Laws
Pub. L.
Enacted acts of Congress (113th onward)
Browse by date
View an earlier version
Go
Latest
Current
1 year ago
Sep 1, 2025
5 years ago
Sep 1, 2021
Browse all versions by date
Notes
Notes
Browse by date
Home
About
Privacy
MCP
…
/
Code of Federal Regulations
/
Title 40
/
Chapter I — Environmental Protection Agency
/
Subchapter C — Air Programs
/
Part 51 — Requirements for Preparation, Adoption, and Submittal of Implementation Plans
/
Subpart R — Extensions
‹
Subpt. Q
Reports
Subpt. S
Inspection/Maintenance Program Requirements
›
Subpart R — Extensions
Search Subpart R full text →
§51.341
Request for 18-month extension.
‹
Subpt. Q
Reports
Subpt. S
Inspection/Maintenance Program Requirements
›
Add note
Incoming references
Copy permalink
Cite
Cite this provision
×
Format
Bluebook
ALWD
APA
MLA
Include provision text
Copy citation
Incoming references
×
Open in new tab
✕