Title 40 -- Protection of Environment
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PART 93 -- DETERMINING CONFORMITY OF FEDERAL ACTIONS TO STATE OR FEDERAL IMPLEMENTATION PLANS

   
Subpart A -- 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

      §93.100 Purpose.
      §93.101 Definitions.
      §93.102 Applicability.
      §93.103 Priority.
      §93.104 Frequency of conformity determinations.
      §93.105 Consultation.
      §93.106 Content of transportation plans.
      §93.107 Relationship of transportation plan and TIP conformity with the NEPA process.
      §93.108 Fiscal constraints for transportation plans and TIPs.
      §93.109 Criteria and procedures for determining conformity of transportation plans, programs, and projects: General.
      §93.110 Criteria and procedures: Latest planning assumptions.
      §93.111 Criteria and procedures: Latest emissions model.
      §93.112 Criteria and procedures: Consultation.
      §93.113 Criteria and procedures: Timely implementation of TCMs.
      §93.114 Criteria and procedures: Currently conforming transportation plan and TIP.
      §93.115 Criteria and procedures: Projects from a plan and TIP.
      §93.116 Criteria and procedures: Localized CO and PM10 violations (hot spots).
      §93.117 Criteria and procedures: Compliance with PM10 control measures.
      §93.118 Criteria and procedures: Motor vehicle emissions budget.
      §93.119 Criteria and procedures: Emission reductions in areas without motor vehicle emissions budgets.
      §93.120 Consequences of control strategy implementation plan failures.
      §93.121 Requirements for adoption or approval of projects by other recipients of funds designated under title 23 U.S.C. or the Federal Transit Laws.
      §93.122 Procedures for determining regional transportation-related emissions.
      §93.123 Procedures for determining localized CO and PM10 concentrations (hot-spot analysis).
      §93.124 Using the motor vehicle emissions budget in the applicable implementation plan (or implementation plan submission).
      §93.125 Enforceability of design concept and scope and project-level mitigation and control measures.
      §93.126 Exempt projects.
      §93.127 Projects exempt from regional emissions analyses.
      §93.128 Traffic signal synchronization projects.
      §93.129 Special exemptions from conformity requirements for pilot program areas.
   
Subpart B -- Determining Conformity of General Federal Actions to State or Federal Implementation Plans

      §93.150 Prohibition.
      §93.151 State implementation plan (SIP) revision.
      §93.152 Definitions.
      §93.153 Applicability.
      §93.154 Conformity analysis.
      §93.155 Reporting requirements.
      §93.156 Public participation.
      §93.157 Frequency of conformity determinations.
      §93.158 Criteria for determining conformity of general Federal actions.
      §93.159 Procedures for conformity determinations of general Federal actions.
      §93.160 Mitigation of air quality impacts.