---
kind: "section"
citation: "40 C.F.R. § 52.2679"
title: "40"
number: "52.2679"
heading: "Control strategy and regulations: Sulfur dioxide."
url: "https://uscodex.org/cfr/40/52.2679"
---

# §52.2679. Control strategy and regulations: Sulfur dioxide.

- (a) Approvals of the following rules are limited to specific sources, since a control strategy demonstration has not been submitted showing that any increased emissions would not interfere with the attainment or maintenance of the NAAQS.
  - (1) [Rule 13.1](/cfr/40/13.1.md), submitted on October 12, 1979, for all applicable sources except the Tanguisson Power Plant.
  - (2) [Rule 13.2](/cfr/40/13.2.md), submitted on January 25, 1972, for the Tanguisson Power Plant.
- (b) The following rules are disapproved because they are inconsistent with section 123(a)(2) of the Clean Air Act which requires continuous control strategies.
  - (1) [Rule 13.2](/cfr/40/13.2.md), submitted on October 12, 1979.
- (c) Effective October 20, 2025, the EPA has determined, that based on air dispersion modeling, the Piti-Cabras nonattainment area has attained the 2010 1-hour sulfur dioxide NAAQS. This clean data determination suspends the requirement for this area to submit an attainment demonstration, associated reasonably available control measures, including reasonably available control technology, a reasonable further progress plan, emissions limitations and control measures as necessary to provide for attainment, and contingency measures, for as long as this area continues to meet the 2010 1-hour sulfur dioxide NAAQS.

## Notes

### Amendments

[46 FR 26304, May 6, 1981, as amended at 90 FR 44987, Sept. 18, 2025]

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Amendments

[40 FR 5521, Feb. 6, 1975]

### Amendments

[46 FR 26304, May 6, 1981, as amended at 90 FR 44987, Sept. 18, 2025]