Environmental Protection Agency April 5, 2024 – Federal Register Recent Federal Regulation Documents
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Proposed Consent Decree, Clean Air Act Citizen Suit
In accordance with the Clean Air Act, as amended ("CAA" or "the Act"), the Environmental Protection Agency ("EPA" or "the Agency") is providing notice of a proposed consent decree in Sierra Club v. Michael S. Regan, No. 1:23-cv-00424-RCL (D.D.C.). On February 15, 2023, Plaintiff Sierra Club filed a complaint in the United States District Court for the District of Columbia alleging that EPA's failure to issue final Federal plans implementing emissions guidelines for commercial and industrial solid waste incinerators ("CISWI"), and other solid waste incinerators ("OSWI") in states which had not submitted approvable state plans constituted agency action unreasonably delayed.
Public Meetings of the Science Advisory Board Radionuclide Cancer Risk Coefficients Review Panel
The Environmental Protection Agency (EPA) Science Advisory Board (SAB) Staff Office is announcing two public meetings of the Science Advisory Board Radionuclide Cancer Risk Coefficients Review Panel. The purpose of the meetings is to receive a briefing from EPA, review and discuss charge questions, listen to public comments and peer review the EPA's draft Cancer Risk Coefficients for Environmental Exposure to Radionuclides (Federal Guidance Report No. 16).
Approval of Implementation Plans for Air Quality Planning Purposes; State of Nevada; Clark County Second 10-Year Maintenance Plan for the 1997 8-Hour Ozone Standard
The Environmental Protection Agency (EPA) is taking final action to approve, as a revision of the Nevada state implementation plan (SIP), the State's second 10-year plan for maintaining the 1997 8- hour ozone standard in Clark County ("Clark County Second Maintenance Plan" or "Plan"). The Clark County Second Maintenance Plan includes, among other elements, a base year emissions inventory, a maintenance demonstration, contingency provisions, and motor vehicle emissions budgets for use in transportation conformity determinations to ensure the continued maintenance of the 1997 National Ambient Air Quality Standards for ozone ("1997 ozone NAAQS" or "1997 8-hour ozone standard"). With this action, the EPA is approving the motor vehicle emissions budgets for 2017, 2023, and 2033. The EPA is taking this final action because the SIP revision meets the applicable statutory and regulatory requirements for such plans and motor vehicle emissions budgets.
National Emission Standards for Hazardous Air Pollutants: Ethylene Oxide Emissions Standards for Sterilization Facilities Residual Risk and Technology Review
This action finalizes the residual risk and technology review (RTR) conducted for the Commercial Sterilization Facilities source category regulated under national emission standards for hazardous air pollutants (NESHAP) under the Clean Air Act. The EPA is finalizing decisions concerning the RTR, including definitions for affected sources, emission standards for previously unregulated sources, amendments pursuant to the risk review to address ethylene oxide (EtO) emissions from certain sterilization chamber vents (SCVs), aeration room vents (ARVs), chamber exhaust vents (CEVs), and room air emissions, and amendments pursuant to the technology review for certain SCVs and ARVs. In addition, we are taking final action to correct and clarify regulatory provisions related to emissions during periods of startup, shutdown, and malfunction (SSM), including removing exemptions for periods of SSM. We are also taking final action to require owners and operators to demonstrate compliance through the use of EtO continuous emissions monitoring systems (CEMS), with exceptions for very small users of EtO; add provisions for electronic reporting of performance test results and other reports; and include other technical revisions to improve consistency and clarity. We estimate that these final amendments will reduce EtO emissions from this source category by approximately 21 tons per year (tpy).
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