The Environmental Protection Agency (EPA) is approving portions of State Implementation Plan (SIP) revisions submitted by the State of New Hampshire that certify that the state has adopted regulations meeting the requirements for reasonably available control technology (RACT) for the 2008 and 2015 ozone national ambient air quality standards (NAAQS), and portions of amendments to a related regulation that New Hampshire revised to fulfill RACT requirements for these two NAAQS. We are also approving a revision to the state's definition of emergency generator.

The EPA is granting the Rhode Island Department of Environmental Management (RI DEM) the authority to implement and enforce the amended Rhode Island Code of Regulations, Control of Emissions from Organic Solvent Cleaning (Organic Solvent Cleaning Rule), and the General Definitions Regulation (General Definitions Rule) in place of the National Emission Standard for Halogenated Solvent Cleaning (Halogenated Solvent NESHAP) as a partial rule substitution as it applies to organic solvent cleaning machines in Rhode Island.

The Environmental Protection Agency (EPA) is proposing to approve the regional haze state implementation plan (SIP) revision submitted by the State of Maryland on February 8, 2022, as satisfying applicable requirements under the Clean Air Act (CAA) and EPA's Regional Haze Rule for the program's second implementation period.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is approving the July 20, 2021, revisions to the Texas State Implementation Plan (SIP) concerning Reasonably Available Control Technology (RACT) requirements for sources covered by the 2016 Oil and Natural Gas Control Techniques Guidelines (CTG or CTGs) for the Dallas-Fort Worth (DFW) and the Houston- Galveston-Brazoria (HGB) nonattainment areas (NAAs) for the 2008 8-hour ozone National Air Quality Ambient Air Quality Standards (NAAQS).