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40 CFR 87.23 · Exhaust emission standards for Tier 6 and Tier 8 engines.
40 CFR 87.31 · Exhaust emission standards for in-use engines.
40 CFR 87.48 · Derivative engines for emissions certification purposes.
40 CFR 87.50 · Exemptions and exceptions.
40 CFR 87.60 · Testing engines.
40 CFR 88.1 · General applicability.
40 CFR 88.2 through 88.3 · §§ 88.2 through 88.3 [Reserved]
40 CFR 89.1 · Applicability.
40 CFR 89.2 through 89.3 · §§ 89.2 through 89.3 [Reserved]
40 CFR 90.1 · Applicability.
40 CFR 90.2 through 90.3 · §§ 90.2 through 90.3 [Reserved]
40 CFR 91.1 · Applicability.
40 CFR 91.2 through 91.3 · §§ 91.2 through 91.3 [Reserved]
40 CFR 92.1 · Applicability.
40 CFR 92.2 through 92.3 · §§ 92.2 through 92.3 [Reserved]
40 CFR 93.100 · Purpose.
40 CFR 93.101 · Definitions.
40 CFR 93.102 · Applicability.
40 CFR 93.103 · Priority.
40 CFR 93.104 · Frequency of conformity determinations.
40 CFR 93.105 · Consultation.
40 CFR 93.106 · Content of transportation plans and timeframe of conformity determinations.
40 CFR 93.107 · Relationship of transportation plan and TIP conformity with the NEPA process.
40 CFR 93.108 · Fiscal constraints for transportation plans and TIPs.
40 CFR 93.109 · Criteria and procedures for determining conformity of transportation plans, programs, and projects: General.
40 CFR 93.110 · Criteria and procedures: Latest planning assumptions.
40 CFR 93.111 · Criteria and procedures: Latest emissions model.
40 CFR 93.112 · Criteria and procedures: Consultation.
40 CFR 93.113 · Criteria and procedures: Timely implementation of TCMs.
40 CFR 93.114 · Criteria and procedures: Currently conforming transportation plan and TIP.
40 CFR 93.115 · Criteria and procedures: Projects from a transportation plan and TIP.
40 CFR 93.116 · Criteria and procedures: Localized CO, PM10, and PM2.5 violations (hot-spots).
40 CFR 93.117 · Criteria and procedures: Compliance with PM10 and PM2.5 control measures.
40 CFR 93.118 · Criteria and procedures: Motor vehicle emissions budget.
40 CFR 93.119 · Criteria and procedures: Interim emissions in areas without motor vehicle emissions budgets.
40 CFR 93.120 · Consequences of control strategy implementation plan failures.
40 CFR 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.
40 CFR 93.122 · Procedures for determining regional transportation-related emissions.
40 CFR 93.123 · Procedures for determining localized CO, PM10, and PM2.5 concentrations (hot-spot analysis).
40 CFR 93.124 · Using the motor vehicle emissions budget in the applicable implementation plan (or implementation plan submission).
40 CFR 93.125 · Enforceability of design concept and scope and project-level mitigation and control measures.
40 CFR 93.126 · Exempt projects.
40 CFR 93.127 · Projects exempt from regional emissions analyses.
40 CFR 93.128 · Traffic signal synchronization projects.
40 CFR 93.129 · Special exemptions from conformity requirements for pilot program areas.
40 CFR 93.150 · Prohibition.
40 CFR 93.151 · State implementation plan (SIP) revision.
40 CFR 93.152 · Definitions.
40 CFR 93.153 · Applicability.
40 CFR 93.154 · Federal agency conformity responsibility.
40 CFR 93.155 · Reporting requirements.
40 CFR 93.156 · Public participation.
40 CFR 93.157 · Reevaluation of conformity.
40 CFR 93.158 · Criteria for determining conformity of general Federal actions.
40 CFR 93.159 · Procedures for conformity determinations of general Federal actions.
40 CFR 93.160 · Mitigation of air quality impacts.
40 CFR 93.161 · Conformity evaluation for Federal installations with facility-wide emission budgets.
40 CFR 93.162 · Emissions beyond the time period covered by the SIP.
40 CFR 93.163 · Timing of offsets and mitigation measures.
40 CFR 93.164 · Inter-precursor mitigation measures and offsets.
40 CFR 93.165 · Early emission reduction credit programs at Federal facilities and installation subject to Federal oversight.
40 CFR 94.1 · Applicability.
40 CFR 94.2 through 94.3 · §§ 94.2 through 94.3 [Reserved]
40 CFR 95.1 · Definitions.
40 CFR 95.2 · Petition for mandatory license.
40 CFR 95.3 · Findings prior to application to Attorney General.
40 CFR 95.4 · Limitations on mandatory licenses.
40 CFR 96.1 · Purpose.
40 CFR 96.2 · Definitions.
40 CFR 96.3 · Measurements, abbreviations, and acronyms.
40 CFR 96.4 · Applicability.
40 CFR 96.5 · Retired unit exemption.
40 CFR 96.6 · Standard requirements.
40 CFR 96.7 · Computation of time.
40 CFR 96.10 · Authorization and responsibilities of the NOX authorized account representative.
40 CFR 96.11 · Alternate NOX authorized account representative.
40 CFR 96.12 · Changing the NOX authorized account representative and the alternate NOX authorized account representative; changes in the owners and operators.
40 CFR 96.13 · Account certificate of representation.
40 CFR 96.14 · Objections concerning the NOX authorized account representative.
40 CFR 96.20 · General NOX Budget trading program permit requirements.
40 CFR 96.21 · Submission of NOX Budget permit applications.
40 CFR 96.22 · Information requirements for NOX Budget permit applications.
40 CFR 96.23 · NOX Budget permit contents.
40 CFR 96.24 · Effective date of initial NOX Budget permit.
40 CFR 96.25 · NOX Budget permit revisions.
40 CFR 96.30 · Compliance certification report.
40 CFR 96.31 · Permitting authority's and Administrator's action on compliance certifications.
40 CFR 96.40 · State trading program budget.
40 CFR 96.41 · Timing requirements for NOX allowance allocations.
40 CFR 96.42 · NOX allowance allocations.
40 CFR 96.50 · NOX Allowance Tracking System accounts.
40 CFR 96.51 · Establishment of accounts.
40 CFR 96.52 · NOX Allowance Tracking System responsibilities of NOX authorized account representative.
40 CFR 96.53 · Recordation of NOX allowance allocations.
40 CFR 96.54 · Compliance.
40 CFR 96.55 · Banking.
40 CFR 96.56 · Account error.
40 CFR 96.57 · Closing of general accounts.
40 CFR 96.60 · Submission of NOX allowance transfers.
40 CFR 96.61 · EPA recordation.