Data / Federal rules / 2026-16570

Air Plan Approval; Iowa; Interstate Transport Requirements for the 2010 Sulfur Dioxide Standard

The Environmental Protection Agency published this proposed rule in the Federal Register on August 14, 2026. Comments closed on September 14, 2026.

SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.

Get new rules for your industry

What the agency says

The Environmental Protection Agency (EPA) is proposing to approve the State Implementation Plan (SIP) submission from Iowa addressing the Clean Air Act (CAA or Act) interstate transport requirements, also known as the "good neighbor" provision, for the 2010 1-hour primary sulfur dioxide (SO<INF>2</INF>) National Ambient Air Quality Standard (NAAQS). The good neighbor provision requires each State's plan to contain adequate provisions prohibiting the interstate transport of air pollution in amounts that will contribute significantly to nonattainment, or interfere with maintenance, of a NAAQS in any other State. The EPA's proposed approval of this rule revision is being done in accordance with the requirements of the CAA.

Key facts

Document number: 2026-16570
Type: Proposed rule
Action: Proposed rule
Agency: Environmental Protection Agency
Published: August 14, 2026
Comments due: September 14, 2026
Dates: Comments must be received on or before September 14, 2026.
Docket: EPA-R07-OAR-2026-5809; FRL-13519-01-R7
Code of Federal Regulations: 40 CFR 52
Topics: Air pollution control; Carbon monoxide; Environmental protection; Incorporation by reference; Intergovernmental relations; Lead; Nitrogen dioxide; Ozone; Particulate matter; Reporting and recordkeeping requirements; Sulfur oxides; Volatile organic compounds
Pages: 8

The document on federalregister.gov PDF

Other documents from the Environmental Protection Agency

Document	Type	Published
Virginia: Approval of State Coal Combustion Residuals Permit Program 2026-21622	Final rule	Oct 22
Utah Underground Injection Control Program; Class VI Primacy 2026-21618	Proposed rule	Oct 22
Nevada: Codification and Incorporation by Reference of Approved Underground Storage Tank Program 2026-21603	Final rule	Oct 22
New Source Performance Standards and National Emission Standards for Hazardous Air Pollutants; Delegation of Authority to Northwest Clean Air Agency, Washington State 2026-21383	Proposed rule	Oct 19
Air Quality Plan; Arizona; Agricultural Best Management Practices Rules for the West Pinal County PM10 Nonattainment Area 2026-21289	Proposed rule	Oct 19
Approval and Promulgation of Implementation Plans-Pinal County (Part); West Pinal, AZ PM10 Nonattainment Area; Moderate Area, Serious Area, and Section 189(d) Plan for Attainment of the 24-Hour PM10 Standard 2026-21288	Proposed rule	Oct 19
Air Quality Plan; Arizona; Pinal County Air Quality Control District; West Pinal County PM10 Nonattainment Area; Fugitive Dust Rules 2026-21287	Proposed rule	Oct 19
Approval and Promulgation of Implementation Plans; Arizona; Revisions to the Cleaner Burning Gasoline, Winter Oxygenated Fuel, and Gasoline Set-Aside Programs 2026-21268	Final rule	Oct 19

Everything from the Environmental Protection Agency · Rules on air pollution control · Rules on carbon monoxide · Rules on environmental protection · Published in August 2026

Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.