2025年1月29日 · PART 51—ENVIRONMENTAL PROTECTION REGULATIONS FOR DOMESTIC LICENSING AND RELATED REGULATORY FUNCTIONS. Part Index. General Provisions. Sec. 51.1 Scope. 51.2 Subparts. 51.3 Resolution of conflict. 51.4 Definitions. 51.5 Interpretations. 51.6 Specific exemptions. Subpart A—National Environmental Policy …

View the PDF for 40 CFR Part 51; These links go to the official, published CFR, which is updated annually. As a result, it may not include the most recent changes applied to the CFR. Learn more.

2021年5月1日 · For sources subject to the prevention of significant deterioration program (40 CFR 51.166 and 52.21), an excessive concentration alternatively means a maximum ground-level concentration due to emissions from a stack due in whole or part to downwash, wakes, or eddy effects produced by nearby structures or nearby terrain features which ...

Subpart W—Determining Conformity of General Federal Actions to State or Federal Implementation Plans (§§ 51.850 - 51.852--51.860) Subpart X—Provisions for Implementation of 8-hour Ozone National Ambient Air Quality Standard (§§ 51.900 - 51.919)

2024年9月5日 · 51.107 Public hearings in proceedings for issuance of combined licenses; limited work authorizations. 51.108 Public hearings on Commission findings that inspections, tests, analyses, and acceptance criteria of combined licenses are met

2024年11月19日 · Requirements binding on all persons and organizations who receive a license from NRC to use nuclear materials or operate nuclear facilities. Effective Dates | Federal Register Notices | Rulemaking.

View the PDF for 1 CFR Part 51; These links go to the official, published CFR, which is updated annually. As a result, it may not include the most recent changes applied to the CFR. Learn more.

It is the purpose of this chapter to provide a plan for classification of positions whereby— (1) in determining the rate of basic pay which an employee will receive— (A) the principle of equal pay for substantially equal work will be followed; and.

2025年3月5日 · On December 20, 2016, the Administrator signed a final rule that revises the Guideline on Air Quality Models. The Guideline provides EPA-recommended models and other techniques, as well as guidance for their use, for predicting ambient concentrations of …

51.121 Findings and requirements for submission of State implementation plan revisions relating to emissions of nitrogen oxides. 51.122 Emissions reporting requirements for SIP revisions relating to budgets for NOX emissions.