# New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Northwest Clean Air Agency, Washington State

**Action Urgency Score:** 55/100

| Field | Value |
|---|---|
| Agency | Environmental Protection Agency |
| Type | Proposed rule |
| Action | Proposed rule. |
| Published | 2026-10-19 |
| Comments close | 2026-11-18 |
| Significant | No |
| CFR parts | 40 CFR 60, 40 CFR 61, 40 CFR 63 |
| Summary | The Northwest Clean Air Agency (NWCAA), located in Washington State, submitted updated regulations for receiving delegation and approval of its program for the implementation and enforcement of newly issued or revised New Source Performance Standards (NSPS) and National Emission Standards for Hazardous Air Pollutants (NESHAP), as provided for under previously approved delegation mechanisms. The updated regulations incorporate by reference certain NSPS and NESHAP promulgated by the Environmental Protection Agency (EPA) as they existed through October 18, 2023. The EPA is providing notice that i |
| Document number | 2026-21383 |

## Why this score
- Comment deadline within 30 days.

Source: Federal Register API (Office of the Federal Register) (https://www.federalregister.gov/documents/2026/10/19/2026-21383/new-source-performance-standards-and-national-emission-standards-for-hazardous-air-pollutants). Last refreshed: 2026-11-03T19:10:06.902Z.
Data from the Federal Register API; the published Federal Register document is authoritative. Informational only, not legal advice.