# Air Plan Approval; Oklahoma; Updates to the State Implementation Plan for New Source Review Permitting and General SIP Provisions

**Action Urgency Score:** 30/100

| Field | Value |
|---|---|
| Agency | Environmental Protection Agency |
| Type | Final rule |
| Action | Final rule. |
| Published | 2026-07-02 |
| Effective | 2026-08-03 |
| Significant | No |
| CFR parts | 40 CFR 52 |
| Summary | Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving identified portions of revisions to the Oklahoma State Implementation Plan (SIP) submitted by the State of Oklahoma designee between 2002 and 2025 to update the Oklahoma New Source Review (NSR) permit program and make general updates to the Oklahoma SIP. |
| Document number | 2026-13398 |

## Why this score
- Final rule.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/07/02/2026-13398/air-plan-approval-oklahoma-updates-to-the-state-implementation-plan-for-new-source-review-permitting). Last refreshed: 2026-11-04T09:17:43.641Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.