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Code of Federal Regulations (Last Updated: November 8, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 51 - Requirements for Preparation, Adoption, and Submittal of Implementation Plans |
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Subpart T - Conformity to State or Federal Implementation Plans of Transportation Plans, Programs, and Projects Developed, Funded or Approved Under Title 23 U.S.C. or the Federal Transit Laws |
Subpart T - Conformity to State or Federal Implementation Plans of Transportation Plans, Programs, and Projects Developed, Funded or Approved Under Title 23 U.S.C. or the Federal Transit Laws
| § 51.390 - Implementation plan revision. |
| § 51.392 - Definitions. |
| § 51.394 - Applicability. |
| § 51.396 - Implementation plan revision. |
| § 51.398 - Priority. |
| § 51.400 - Frequency of conformity determinations. |
| § 51.402 - Consultation. |
| § 51.404 - Content of transportation plans. |
| § 51.406 - Relationship of transportation plan and TIP conformity with the NEPA process. |
| § 51.408 - Fiscal constraints for transportation plans and TIPs. |
| § 51.410 - Criteria and procedures for determining conformity of transportation plans, programs, and projects: General. |
| § 51.412 - Criteria and procedures: Latest planning assumptions. |
| § 51.414 - Criteria and procedures: Latest emissions model. |
| § 51.416 - Criteria and procedures: Consultation. |
| § 51.418 - Criteria and procedures: Timely implementation of TCMs. |
| § 51.420 - Criteria and procedures: Currently conforming transportation plan and TIP. |
| § 51.422 - Criteria and procedures: Projects from a plan and TIP. |
| § 51.424 - Criteria and procedures: Localized CO and PM10 violations (hot spots). |
| § 51.426 - Criteria and procedures: Compliance with PM10 control measures. |
| § 51.428 - Criteria and procedures: Motor vehicle emissions budget (transportation plan). |
| § 51.430 - Criteria and procedures: Motor vehicle emissions budget (TIP). |
| § 51.432 - Criteria and procedures: Motor vehicle emissions budget (project not from a plan and TIP). |
| § 51.434 - Criteria and procedures: Localized CO violations (hot spots) in the interim period. |
| § 51.436 - Criteria and procedures: Interim period reductions in ozone and CO areas (transportation plan). |
| § 51.438 - Criteria and procedures: Interim period reductions in ozone and CO areas (TIP). |
| § 51.440 - Criteria and procedures: Interim period reductions for ozone and CO areas (project not from a plan and TIP). |
| § 51.442 - Criteria and procedures: Interim period reductions for PM10 and NO2 areas (transportation plan). |
| § 51.444 - Criteria and procedures: Interim period reductions for PM10 and NO2 areas (TIP). |
| § 51.446 - Criteria and procedures: Interim period reductions for PM10 and NO2 areas (project not from a plan and TIP). |
| § 51.448 - Transition from the interim period to the control strategy period. |
| § 51.450 - Requirements for adoption or approval of projects by recipients of funds designated under title 23 U.S.C. or the Federal Transit Act. |
| § 51.452 - Procedures for determining regional transportation-related emissions. |
| § 51.454 - Procedures for determining localized CO and PM10 concentrations (hot-spot analysis). |
| § 51.456 - Using the motor vehicle emissions budget in the applicable implementation plan (or implementation plan submission). |
| § 51.458 - Enforceability of design concept and scope and project-level mitigation and control measures. |
| § 51.460 - Exempt projects. |
| § 51.462 - Projects exempt from regional emissions analyses. |
| § 51.464 - Special provisions for nonattainment areas which are not required to demonstrate reasonable further progress and attainment. |