---
kind: "section"
citation: "40 C.F.R. § 51.261"
title: "40"
number: "51.261"
heading: "Final compliance schedules."
url: "https://uscodex.org/cfr/40/51.261"
---

# §51.261. Final compliance schedules.

- (a) Unless EPA grants an extension under subpart R, compliance schedules designed to provide for attainment of a primary standard must—
  - (1) Provide for compliance with the applicable plan requirements as soon as practicable; or
  - (2) Provide for compliance no later than the date specified for attainment of the primary standard under;
- (b) Unless EPA grants an extension under subpart R, compliance schedules designed to provide for attainment of a secondary standard must—
  - (1) Provide for compliance with the applicable plan requirements in a reasonable time; or
  - (2) Provide for compliance no later than the date specified for the attainment of the secondary standard under [§ 51.110(c)](/cfr/40/51.110.md?p=c).

## Notes

### Source

Source: 51 FR 40673, Nov. 7, 1986, unless otherwise noted.

### Authority

Authority: 23 U.S.C. 101; 42 U.S.C. 7401-7671q.

### Source

Source: 36 FR 22398, Nov. 25, 1971, unless otherwise noted.