Environmental Protection Agency December 29, 2023 – Federal Register Recent Federal Regulation Documents

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving portions of the revisions to the Arkansas State Implementation Plan (SIP) including revisions to the Arkansas Pollution Control and Ecology Commission's (``Commission'' or APC&EC) Rule No. 19, Rules of the Arkansas Plan of Implementation for Air Pollution Control submitted by the Arkansas Department of Energy and Environment, Division of Environmental Quality (DEQ) via the Arkansas Governor's Office on June 22, 2022. Most of the revisions are administrative in nature and make the SIP current with Federal rules.

The Environmental Protection Agency (EPA) is announcing a public comment period on the benchmark dose (BMD) model code and BMD modeling output files associated with the Draft IRIS Toxicological Review of Inorganic Arsenic. The original Federal Register notice associated with the draft IRIS inorganic arsenic assessment was published on October 16, 2023, and closed on December 15, 2023. After reviewing the comments received on the draft assessment, EPA is opening an additional public comment period on the BMD model code and the BMD modeling output files that were not accessible by the public during the original comment period due to a technical issue. For submissions received during this public comment period, EPA will only address comments on the BMD model code and BMD modeling output files, which are available at: https://gaftp.epa.gov/EPADataCommons/ORD/ DRAFTiAsToxReview/.