This action would amend specific provisions in the Greenhouse Gas Reporting Rule to improve the quality and consistency of the data collected under the rule. Proposed amendments include revisions to improve the calculation, recordkeeping, and reporting requirements of 40 CFR part 98 by incorporating updates to emissions estimation methodologies and providing for collection of additional data to understand new source categories or new emission sources for specific sectors. The changes would improve understanding of the sector-specific processes or other factors that influence greenhouse gas emissions rates, improve verification of collected data, and complement or inform other EPA programs. This action would also improve implementation of the Greenhouse Gas Reporting Rule by streamlining implementation and clarifying certain provisions that have been the subject of questions from reporting entities. This action would also establish and amend confidentiality determinations for the reporting of certain data elements to be added or substantially revised in these amendments.