Title 40, Part 93 — Determining Conformity of Federal Actions to State or Federal Implementation Plans

Purpose.

Definitions.

Applicability.

Priority.

Frequency of conformity determinations.

Consultation.

Content of transportation plans and timeframe of conformity determinations.

Relationship of transportation plan and TIP conformity with the NEPA process.

Fiscal constraints for transportation plans and TIPs.

Criteria and procedures for determining conformity of transportation plans, programs, and projects: General.

Criteria and procedures: Latest planning assumptions.

Criteria and procedures: Latest emissions model.

Criteria and procedures: Consultation.

Criteria and procedures: Timely implementation of TCMs.

Criteria and procedures: Currently conforming transportation plan and TIP.

Criteria and procedures: Projects from a transportation plan and TIP.

Criteria and procedures: Localized CO, PM, and PM violations (hot-spots).

Criteria and procedures: Compliance with PM and PM control measures.

Criteria and procedures: Motor vehicle emissions budget.

Criteria and procedures: Interim emissions in areas without motor vehicle emissions budgets.

Consequences of control strategy implementation plan failures.

Requirements for adoption or approval of projects by other recipients of funds designated under title 23 U.S.C. or the Federal Transit Laws.

Procedures for determining regional transportation-related emissions.

Procedures for determining localized CO, PM, and PM concentrations (hot-spot analysis).

Using the motor vehicle emissions budget in the applicable implementation plan (or implementation plan submission).

Enforceability of design concept and scope and project-level mitigation and control measures.

Exempt projects.

Projects exempt from regional emissions analyses.

Traffic signal synchronization projects.

Special exemptions from conformity requirements for pilot program areas.

Prohibition.

State implementation plan (SIP) revision.

Definitions.

Applicability.

Federal agency conformity responsibility.

Reporting requirements.

Public participation.

Reevaluation of conformity.

Criteria for determining conformity of general Federal actions.

Procedures for conformity determinations of general Federal actions.

Mitigation of air quality impacts.

Conformity evaluation for Federal installations with facility-wide emission budgets.

Emissions beyond the time period covered by the SIP.

Timing of offsets and mitigation measures.

Inter-precursor mitigation measures and offsets.

Early emission reduction credit programs at Federal facilities and installation subject to Federal oversight.