Part 51 — Requirements for Preparation, Adoption, and Submittal of Implementation Plans
Subpart A — Air Emissions Reporting Requirements
- § 51.1— Who is responsible for actions described in this subpart?
- § 51.5— What tools are available to help prepare and report emissions data?
- § 51.15— What data does my state need to report to EPA?
- § 51.20— What are the emission thresholds that separate point and nonpoint sources?
- § 51.25— What geographic area must my state's inventory cover?
- § 51.30— When does my state report which emissions data to EPA?
- § 51.35— How can my state equalize the emission inventory effort from year to year?
- § 51.40— In what form and format should my state report the data to EPA?
- § 51.45— Where should my state report the data?
- § 51.50— What definitions apply to this subpart?
Subpart F — Procedural Requirements
Subpart G — Control Strategy
- § 51.110— Attainment and maintenance of national standards.
- § 51.111— Description of control measures.
- § 51.112— Demonstration of adequacy.
- § 51.114— Emissions data and projections.
- § 51.115— Air quality data and projections.
- § 51.116— Data availability.
- § 51.117— Additional provisions for lead.
- § 51.118— Stack height provisions.
- § 51.119— Intermittent control systems.
- § 51.120— Requirements for State Implementation Plan revisions relating to new motor vehicles.
- § 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 NO<sub>X</sub> emissions.
- § 51.123— Findings and requirements for submission of State implementation plan revisions relating to emissions of oxides of nitrogen pursuant to the Clean Air Interstate Rule.
- § 51.124— Findings and requirements for submission of State implementation plan revisions relating to emissions of sulfur dioxide pursuant to the Clean Air Interstate Rule.
- § 51.126— Determination of widespread use of ORVR and waiver of CAA section 182(b)(3) Stage II gasoline vapor recovery requirements.
Subpart H — Prevention of Air Pollution Emergency Episodes
Subpart I — Review of New Sources and Modifications
Subpart J — Ambient Air Quality Surveillance
Subpart K — Source Surveillance
Subpart L — Legal Authority
Subpart M — Intergovernmental Consultation
Subpart N — Compliance Schedules
Subpart O — Miscellaneous Plan Content Requirements
Subpart P — Protection of Visibility
- § 51.300— Purpose and applicability.
- § 51.301— Definitions.
- § 51.302— Reasonably attributable visibility impairment.
- § 51.303— Exemptions from control.
- § 51.304— Identification of integral vistas.
- § 51.305— Monitoring for reasonably attributable visibility impairment.
- § 51.307— New source review.
- § 51.308— Regional haze program requirements.
- § 51.309— Requirements related to the Grand Canyon Visibility Transport Commission.
Subpart Q — Reports
- § 51.320— Annual air quality data report.
- § 51.321— Annual source emissions and State action report.
- § 51.322— Sources subject to emissions reporting.
- § 51.323— Reportable emissions data and information.
- § 51.324— Progress in plan enforcement.
- § 51.326— Reportable revisions.
- § 51.327— Enforcement orders and other State actions.
Subpart R — Extensions
Subpart S — Inspection/Maintenance Program Requirements
- § 51.350— Applicability.
- § 51.351— Enhanced I/M performance standard.
- § 51.352— Basic I/M performance standard.
- § 51.353— Network type and program evaluation.
- § 51.354— Adequate tools and resources.
- § 51.355— Test frequency and convenience.
- § 51.356— Vehicle coverage.
- § 51.357— Test procedures and standards.
- § 51.358— Test equipment.
- § 51.359— Quality control.
- § 51.360— Waivers and compliance via diagnostic inspection.
- § 51.361— Motorist compliance enforcement.
- § 51.362— Motorist compliance enforcement program oversight.
- § 51.363— Quality assurance.
- § 51.364— Enforcement against contractors, stations and inspectors.
- § 51.365— Data collection.
- § 51.366— Data analysis and reporting.
- § 51.367— Inspector training and licensing or certification.
- § 51.368— Public information and consumer protection.
- § 51.369— Improving repair effectiveness.
- § 51.370— Compliance with recall notices.
- § 51.371— On-road testing.
- § 51.372— State Implementation Plan submissions.
- § 51.373— Implementation deadlines.
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 U — Economic Incentive Programs
Subpart W — Determining Conformity of General Federal Actions to State or Federal Implementation Plans
Subpart X — Provisions for Implementation of 8-hour Ozone National Ambient Air Quality Standard
- § 51.900— Definitions.
- § 51.901— Applicability of part 51.
- § 51.902— Which classification and nonattainment area planning provisions of the CAA shall apply to areas designated nonattainment for the 1997 8-hour NAAQS?
- § 51.903— How do the classification and attainment date provisions in section 181 of subpart 2 of the CAA apply to areas subject to § 51.902(a)?
- § 51.904— How do the classification and attainment date provisions in section 172(a) of subpart 1 of the CAA apply to areas subject to § 51.902(b)?
- § 51.905— How do areas transition from the 1-hour NAAQS to the 1997 8-hour NAAQS and what are the anti-backsliding provisions?
- § 51.906— Redesignation to nonattainment following initial designations for the 8-hour NAAQS.
- § 51.907— For an area that fails to attain the 8-hour NAAQS by its attainment date, how does EPA interpret sections 172(a)(2)(C)(ii) and 181(a)(5)(B) of the CAA?
- § 51.908— What modeling and attainment demonstration requirements apply for purposes of the 8-hour ozone NAAQS?
- § 51.910— What requirements for reasonable further progress (RFP) under sections 172(c)(2) and 182 apply for areas designated nonattainment for the 8-hour ozone NAAQS?
- § 51.912— What requirements apply for reasonably available control technology (RACT) and reasonably available control measures (RACM) under the 8-hour NAAQS?
- § 51.913— How do the section 182(f) NO<sub>X</sub> exemption provisions apply for the 8-hour NAAQS?
- § 51.914— What new source review requirements apply for 8-hour ozone nonattainment areas?
- § 51.915— What emissions inventory requirements apply under the 8-hour NAAQS?
- § 51.916— What are the requirements for an Ozone Transport Region under the 8-hour NAAQS?
- § 51.917— What is the effective date of designation for the Las Vegas, NV, 8-hour ozone nonattainment area?
- § 51.918— Can any SIP planning requirements be suspended in 8-hour ozone nonattainment areas that have air quality data that meets the NAAQS?
- § 51.919— Applicability.
Subpart Y — Mitigation Requirements
Subpart Z — Provisions for Implementation of PM<sub>2.5</sub> National Ambient Air Quality Standards
- § 51.1000— Definitions.
- § 51.1001— Applicability of part 51.
- § 51.1002— Classifications and reclassifications.
- § 51.1003— Attainment plan due dates and submission requirements.
- § 51.1004— Attainment dates.
- § 51.1005— Attainment date extensions.
- § 51.1006— Optional PM<sub>2.5</sub> precursor demonstrations
- § 51.1008— Emissions inventory requirements.
- § 51.1009— Moderate area attainment plan control strategy requirements.
- § 51.1010— Serious area attainment plan control strategy requirements.
- § 51.1011— Attainment demonstration and modeling requirements.
- § 51.1012— Reasonable further progress (RFP) requirements.
- § 51.1013— Quantitative milestone requirements.
- § 51.1014— Contingency measure requirements.
- § 51.1015— Clean data requirements.
- § 51.1016— Continued applicability of the FIP and SIP requirements pertaining to interstate transport under CAA section 110(a)(2)(D)(i) and (ii) after revocation of the 1997 primary annual PM<sub>2.5</sub> NAAQS.
Subpart AA — Provisions for Implementation of the 2008 Ozone National Ambient Air Quality Standards
- § 51.1100— Definitions.
- § 51.1101— Applicability of part 51.
- § 51.1102— Classification and nonattainment area planning provisions.
- § 51.1103— Application of classification and attainment date provisions in CAA section 181 to areas subject to § 51.1102.
- § 51.1105— Transition from the 1997 ozone NAAQS to the 2008 ozone NAAQS and anti-backsliding.
- § 51.1106— Redesignation to nonattainment following initial designations.
- § 51.1107— Determining eligibility for 1-year attainment date extensions for the 2008 ozone NAAQS under CAA section 181(a)(5).
- § 51.1108— Modeling and attainment demonstration requirements.
- § 51.1110— Requirements for reasonable further progress (RFP).
- § 51.1112— Requirements for reasonably available control technology (RACT) and reasonably available control measures (RACM).
- § 51.1113— Section 182(f) NO<sub>X</sub> exemption provisions.
- § 51.1114— New source review requirements.
- § 51.1115— Emissions inventory requirements.
- § 51.1116— Requirements for an Ozone Transport Region.
- § 51.1117— Fee programs for Severe and Extreme nonattainment areas that fail to attain.
- § 51.1118— Suspension of SIP planning requirements in nonattainment areas that have air quality data that meet an ozone NAAQS.
- § 51.1119— Applicability.
Subpart BB — Data Requirements for Characterizing Air Quality for the Primary SO<sub>2</sub> NAAQS
Subpart CC — Provisions for Implementation of the 2015 Ozone National Ambient Air Quality Standards
- § 51.1300— Definitions.
- § 51.1301— Applicability of this part.
- § 51.1302— Classification and nonattainment area planning provisions.
- § 51.1303— Application of classification and attainment date provisions in CAA section 181 to areas subject to § 51.1302.
- § 51.1306— Redesignation to nonattainment following initial designations.
- § 51.1307— Determining eligibility for 1-year attainment date extensions for an 8-hour ozone NAAQS under CAA section 181(a)(5).
- § 51.1308— Modeling and attainment demonstration requirements.
- § 51.1310— Requirements for reasonable further progress (RFP).
- § 51.1312— Requirements for reasonably available control technology (RACT) and reasonably available control measures (RACM).
- § 51.1313— Section 182(f) NO<sub>X</sub> exemption provisions.
- § 51.1314— New source review requirements.
- § 51.1315— Emissions inventory requirements.
- § 51.1316— Requirements for an Ozone Transport Region.
- § 51.1317— Fee programs for Severe and Extreme nonattainment areas that fail to attain.
- § 51.1318— Suspension of SIP planning requirements in nonattainment areas that have air quality data that meet an ozone NAAQS.