Environmental Protection Agency
This notice of proposed rulemaking includes corrections, clarifications, additional flexibilities, and adjustment factors to improve the Greenhouse gas Emissions Model (GEM) compliance tool for heavy-duty vehicles while more closely matching the outputs produced by the original GEM version 3.0 that was used to establish the CO<INF>2</INF> standards for Model Years 2021 and later in the 2016 Heavy-duty Phase 2 final rule. This document supplements the proposed rule published on May 12, 2020, which included a larger set of proposed revisions to modify and improve GEM. Most of the proposed revisions from that notice of proposed rulemaking are addressed in a final rulemaking published elsewhere in the Final Rules section of this issue of the Federal Register. Given the nature of this proposal, there will be neither significant environmental impacts nor significant economic impacts for any sector.
Document Headings Document headings vary by document type but may contain the following: the agency or agencies that issued and signed a document the number of the CFR title and the number of each part the document amends, proposes to amend, or is directly related to the agency docket number / agency internal file number the RIN which identifies each regulatory action listed in the Unified Agenda of Federal Regulatory and Deregulatory Actions See the Document Drafting Handbook for more details. Environmental Protection Agency 40 CFR Parts 1036 and 1037 [EPA-HQ-OAR-2019-0307; FRL-10018-51-OAR] AGENCY: Environmental Protection Agency (EPA). ACTION: Notice of proposed rulemaking. SUMMARY: This notice of proposed rulemaking includes corrections, clarifications, additional flexibilities, and adjustment factors to improve the Greenhouse gas Emissions Model (GEM) compliance tool for heavy-duty vehicles while more closely matching the outputs produced by the original GEM version 3.0 that was used to establish the CO 2 standards for Model Years 2021 and later in the 2016 Heavy-duty Phase 2 final rule. This document supplements the proposed rule published on May 12, 2020, which included a larger set of proposed revisions to modify and improve GEM. Most of the proposed revisions from that notice of proposed rulemaking are addressed in a final rulemaking published elsewhere in the Final Rules section of this issue of the Federal Register . Given the nature of this proposal, there will be neither ( printed page 34190) significant environmental impacts nor significant economic impacts for any sector. DATES: Comments: Comments must be received on or before August 30, 2021. Public Hearing: If anyone contacts us requesting a public hearing on or before July 6, 2021, we will hold an online hearing at 10 a.m. Eastern Standard Time on July 14, 2021. ADDRESSES: Comments: Submit your comments, identified by Docket ID No. EPA-HQ-OAR-2019-0307, at http://www.regulations.gov . For detailed …
Other Federal Register documents from the same docket.
Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and Other Technical Amendments
Improvements for Heavy-Duty Engine and Vehicle Test Procedures
Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and Other Technical Amendments
Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and Other Technical Amendments
Improvements for Heavy-Duty Engine and Vehicle Test Procedures, and Other Technical Amendments
Citation: 86 FR 34189
