Environmental Protection Agency June 13, 2024 – Federal Register Recent Federal Regulation Documents
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Acute Aquatic Life Screening Values for 6PPD and 6PPD-Quinone in Freshwater
The U.S. Environmental Protection Agency (EPA) is announcing the availability of Acute Freshwater Aquatic Life Screening Values for 6PPD (N-(1,3-Dimethylbutyl)-N'-phenyl-p-phenylenediamine) and its transformation product 6PPD-quinone (6PPD-q; N-(1,3-Dimethylbutyl)-N'- phenyl-p-phenylenediamine quinone). The EPA developed these screening values as information under Clean Water Act (CWA) section 304(a)(2)(B) on factors for the protection of aquatic life. States and authorized Tribes may consider these screening values in their water quality protection programs. The screening values for acute exposures to 6PPD and 6PPD-q in freshwater are 8,900 nanograms per liter (ng/L) and 11 ng/L, respectively. Consistent with CWA section 304(a)(2), the EPA expects to update these screening values from time to time as new information becomes available. This announcement is in accordance with CWA section 304(a)(3), which directs the EPA to publish information developed under 304(a)(2) in the Federal Register and make it available to States, authorized Tribes, and the public.
1,1-Dichloroethane and 1,2-Dichloroethane; Peer Review of Draft Documents by the Science Advisory Committee on Chemicals (SACC); Request for Comments on Experts Being Considered as ad hoc Peer Reviewers
The Environmental Protection Agency (EPA or the "Agency") is announcing the change in the peer review mechanism from the letter peer review to a Science Advisory Committee on Chemicals (SACC) peer review; the addition of the draft human health hazard assessment for 1,2- dichloroethane for peer review; the availability of and solicitation of comment on the list of candidates under consideration for selection as ad hoc peer reviewers that will assist the SACC with their peer review of the Agency's draft risk evaluation of 1,1-dichloroethane and human health hazard assessment of 1,2-dichloroethane. The list of candidates provides the names and biographical sketches of all interested and available candidates identified from the responses to the call for nominations and other sources. Public comments on these candidates will assist the Agency in selecting ad hoc peer reviewers to assist the SACC with the identified peer review.
Air Plan Approval; West Virginia; 2006 24-Hour Fine Particulate Matter Limited Maintenance Plans for the Charleston Area and the West Virginia Portion of the Steubenville-Weirton Area
The Environmental Protection Agency (EPA) is approving state implementation plan (SIP) revisions submitted by the State of West Virginia through the West Virginia Department of Environmental Protection (WVDEP). The revisions pertain to second 10-year limited maintenance plans (LMPs) for the 2006 24-hour fine particulate matter (PM2.5) national ambient air quality standard (NAAQS). The LMPs address the Charleston, West Virginia area (Charleston Area) and the West Virginia portion of the Steubenville-Weirton, Ohio-West Virginia area (West Virginia portion of the Steubenville-Weirton Area). EPA is approving the Charleston Area LMP and the West Virginia portion of the Steubenville-Weirton Area LMP because they provide for the maintenance of the 2006 24-hour PM2.5 NAAQS through the end of their respective second 10-year maintenance periods. In addition, EPA is finalizing the process to find the LMPs adequate for transportation conformity purposes. EPA is approving these revisions to the West Virginia SIP in accordance with the requirements of the Clean Air Act (CAA).
Air Plan Approval; North Carolina; Revision to Approved Motor Vehicle Emissions Budgets
The Environmental Protection Agency (EPA) is approving a revision to the North Carolina State Implementation Plan (SIP), submitted by the North Carolina Department of Environmental Quality (NCDEQ), Division of Air Quality, on December 19, 2022. The revision updates the 2026 on-road and nonroad emissions inventories and safety margins and allocates a portion of the newly available 2026 safety margins in the 2008 8-hour Ozone Maintenance Plan to the 2026 nitrogen oxides (NOX) and volatile organic compounds (VOC) motor vehicle emissions budgets ("budgets") for the North Carolina portion of the Charlotte-Rock Hill, NC-SC bi-state Area (hereinafter referred to as the "North Carolina portion of the Charlotte Maintenance Area") to accommodate updates from the EPA Motor Vehicle Emissions Simulator (MOVES3) model. The SIP revision also revises the current 2026 budgets based on the MOVES3 updates and recalculates new available safety margins. NCDEQ's December 19, 2022, submission supplements the revised 2008 8-hour Ozone Maintenance Plan submitted by NCDEQ on July 16, 2020, and approved by EPA on August 25, 2021. EPA is approving North Carolina's December 19, 2022, SIP revision pursuant to section 110(a)(1) of the Clean Air Act (CAA) and deeming the budgets adequate for transportation conformity purposes because they meet the applicable statutory and regulatory requirements.
Partial Approval and Partial Disapproval of Air Quality State Implementation Plans; Arizona; Infrastructure Requirements for Fine Particulate Matter
The Environmental Protection Agency (EPA) is proposing to partially approve and partially disapprove a revision to the Arizona state implementation plan (SIP) as meeting the requirements of the Clean Air Act (CAA) for the implementation, maintenance, and enforcement of the 2012 fine particulate matter (PM2.5) national ambient air quality standards (NAAQS or "standards"). As part of this action, the EPA is proposing to approve regulatory provisions into the Arizona SIP. The EPA is seeking public comment on this proposed action and will accept comments from the public on this proposal for the next 30 days.
Multi-Pollutant Emissions Standards for Model Years 2027 and Later Light-Duty and Medium-Duty Vehicles; Correction
The Environmental Protection Agency (EPA) is correcting a final rule published in the Federal Register of April 18, 2024, which will be effective June 17, 2024. The final rule established new emission standards for light-duty and medium-duty motor vehicles. This document corrects inadvertent errors introduced in preparing the regulatory text for publication. These corrections do not include any substantives change to the final rule.
Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program in Commercial and Industrial Refrigeration
Pursuant to the U.S. Environmental Protection Agency's Significant New Alternatives Policy program, this action lists several substitutes as acceptable, subject to use conditions, for retail food refrigeration, commercial ice machines, industrial process refrigeration, cold storage warehouses, and ice skating rinks. Through this action, EPA is incorporating by reference standards which establish requirements for commercial refrigerating appliances and commercial ice machines, safe use of flammable refrigerants, and safe design, construction, installation, and operation of refrigeration systems. This action also exempts propane, in the refrigerated food processing and dispensing end-use, from the prohibition under the Clean Air Act (CAA) on knowingly venting, releasing, or disposing of substitute refrigerants in the course of maintaining, servicing, repairing or disposing of an appliance or industrial process refrigeration, as the Administrator is determining, on the basis of existing evidence, that such venting, release, or disposal of this substance in this end-use does not pose a threat to the environment.
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