Browse Federal regulations
Read the original sections, or search by topic.
- 40 CFR 51.1013 · Quantitative milestone requirements.
- 40 CFR 51.1014 · Contingency measure requirements.
- 40 CFR 51.1015 · Clean data requirements.
- 40 CFR 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 PM2.5 NAAQS.
- 40 CFR 51.1100 · Definitions.
- 40 CFR 51.1101 · Applicability of part 51.
- 40 CFR 51.1102 · Classification and nonattainment area planning provisions.
- 40 CFR 51.1103 · Application of classification and attainment date provisions in CAA section 181 to areas subject to § 51.1102.
- 40 CFR 51.1104 · [Reserved]
- 40 CFR 51.1105 · Transition from the 1997 ozone NAAQS to the 2008 ozone NAAQS and anti-backsliding.
- 40 CFR 51.1106 · Redesignation to nonattainment following initial designations.
- 40 CFR 51.1107 · Determining eligibility for 1-year attainment date extensions for the 2008 ozone NAAQS under CAA section 181(a)(5).
- 40 CFR 51.1108 · Modeling and attainment demonstration requirements.
- 40 CFR 51.1109 · [Reserved]
- 40 CFR 51.1110 · Requirements for reasonable further progress (RFP).
- 40 CFR 51.1111 · [Reserved]
- 40 CFR 51.1112 · Requirements for reasonably available control technology (RACT) and reasonably available control measures (RACM).
- 40 CFR 51.1113 · Section 182(f) NOX exemption provisions.
- 40 CFR 51.1114 · New source review requirements.
- 40 CFR 51.1115 · Emissions inventory requirements.
- 40 CFR 51.1116 · Requirements for an Ozone Transport Region.
- 40 CFR 51.1117 · Fee programs for Severe and Extreme nonattainment areas that fail to attain.
- 40 CFR 51.1118 · Suspension of SIP planning requirements in nonattainment areas that have air quality data that meet an ozone NAAQS.
- 40 CFR 51.1119 · Applicability.
- 40 CFR 51.1200 · Definitions.
- 40 CFR 51.1201 · Purpose.
- 40 CFR 51.1202 · Applicability.
- 40 CFR 51.1203 · Air agency requirements.
- 40 CFR 51.1204 · Enforceable emission limits providing for attainment.
- 40 CFR 51.1205 · Ongoing data requirements.
- 40 CFR 51.1300 · Definitions.
- 40 CFR 51.1301 · Applicability of this part.
- 40 CFR 51.1302 · Classification and nonattainment area planning provisions.
- 40 CFR 51.1303 · Application of classification and attainment date provisions in CAA section 181 to areas subject to § 51.1302.
- 40 CFR 51.1304-51.1305 · §§ 51.1304-51.1305 [Reserved]
- 40 CFR 51.1306 · Redesignation to nonattainment following initial designations.
- 40 CFR 51.1307 · Determining eligibility for 1-year attainment date extensions for an 8-hour ozone NAAQS under CAA section 181(a)(5).
- 40 CFR 51.1308 · Modeling and attainment demonstration requirements.
- 40 CFR 51.1309 · [Reserved]
- 40 CFR 51.1310 · Requirements for reasonable further progress (RFP).
- 40 CFR 51.1311 · [Reserved]
- 40 CFR 51.1312 · Requirements for reasonably available control technology (RACT) and reasonably available control measures (RACM).
- 40 CFR 51.1313 · Section 182(f) NOX exemption provisions.
- 40 CFR 51.1314 · New source review requirements.
- 40 CFR 51.1315 · Emissions inventory requirements.
- 40 CFR 51.1316 · Requirements for an Ozone Transport Region.
- 40 CFR 51.1317 · Fee programs for Severe and Extreme nonattainment areas that fail to attain.
- 40 CFR 51.1318 · Suspension of SIP planning requirements in nonattainment areas that have air quality data that meet an ozone NAAQS.
- 40 CFR 51.1319 · [Reserved]
- 40 CFR 51.1400 · Definitions.
- 40 CFR 51.1401 · Applicability of part 51.
- 40 CFR 51.1402 · SIP submission and control measure implementation deadlines for reclassified ozone nonattainment areas.
- 40 CFR 51.1403 · Applicability of ozone SIP requirements for former classification after reclassification.
- 40 CFR Appendixes A-K to Part 51 · Appendixes A-K to Part 51 [Reserved]
- 40 CFR Appendix L to Part 51 · Appendix L to Part 51—Example Regulations for Prevention of Air Pollution Emergency Episodes
- 40 CFR Appendix M to Part 51 · Appendix M to Part 51—Recommended Test Methods for State Implementation Plans
- 40 CFR Appendixes N-O to Part 51 · Appendixes N-O to Part 51 [Reserved]
- 40 CFR Appendix P to Part 51 · Appendix P to Part 51—Minimum Emission Monitoring Requirements
- 40 CFR Appendixes Q-R to Part 51 · Appendixes Q-R to Part 51 [Reserved]
- 40 CFR Appendix S to Part 51 · Appendix S to Part 51—Emission Offset Interpretative Ruling
- 40 CFR Appendixes T-U to Part 51 · Appendixes T-U to Part 51 [Reserved]
- 40 CFR Appendix V to Part 51 · Appendix V to Part 51—Criteria for Determining the Completeness of Plan Submissions
- 40 CFR Appendix W to Part 51 · Appendix W to Part 51—Guideline on Air Quality Models
- 40 CFR Appendix X to Part 51 · Appendix X to Part 51—Examples of Economic Incentive Programs
- 40 CFR Appendix Y to Part 51 · Appendix Y to Part 51—Guidelines for BART Determinations Under the Regional Haze Rule
- 40 CFR 52.01 · Definitions.
- 40 CFR 52.02 · Introduction.
- 40 CFR 52.04 · Classification of regions.
- 40 CFR 52.05 · Public availability of emission data.
- 40 CFR 52.06 · Legal authority.
- 40 CFR 52.07 · Control strategies.
- 40 CFR 52.08 · Rules and regulations.
- 40 CFR 52.09 · Compliance schedules.
- 40 CFR 52.10 · Review of new sources and modifications.
- 40 CFR 52.11 · Prevention of air pollution emergency episodes.
- 40 CFR 52.12 · Source surveillance.
- 40 CFR 52.13 · Air quality surveillance; resources; intergovernmental cooperation.
- 40 CFR 52.14 · State ambient air quality standards.
- 40 CFR 52.15 · Public availability of plans.
- 40 CFR 52.16 · Submission to Administrator.
- 40 CFR 52.17 · Severability of provisions.
- 40 CFR 52.18 · Abbreviations.
- 40 CFR 52.20 · Attainment dates for national standards.
- 40 CFR 52.21 · Prevention of significant deterioration of air quality.
- 40 CFR 52.23 · Violation and enforcement.
- 40 CFR 52.24 · Statutory restriction on new sources.
- 40 CFR 52.26 · [Reserved]
- 40 CFR 52.27 · Protection of visibility from sources in attainment areas.
- 40 CFR 52.28 · Protection of visibility from sources in nonattainment areas.
- 40 CFR 52.29 · [Reserved]
- 40 CFR 52.30 · Criteria for limiting application of sanctions under section 110(m) of the Clean Air Act on a statewide basis.
- 40 CFR 52.31 · Selection of sequence of mandatory sanctions for findings made pursuant to section 179 of the Clean Air Act.
- 40 CFR 52.32 · Sanctions following findings of SIP inadequacy.
- 40 CFR 52.33 · Compliance certifications.
- 40 CFR 52.34 · Action on petitions submitted under section 126 relating to emissions of nitrogen oxides.
- 40 CFR 52.35 · What are the requirements of the Federal Implementation Plans (FIPs) for the Clean Air Interstate Rule (CAIR) relating to emissions of nitrogen oxides?
- 40 CFR 52.36 · What are the requirements of the Federal Implementation Plans (FIPs) for the Clean Air Interstate Rule (CAIR) relating to emissions of sulfur dioxide?
- 40 CFR 52.37 · [Reserved]
- 40 CFR 52.38 · What are the requirements of the Federal Implementation Plans (FIPs) for the Cross-State Air Pollution Rule (CSAPR) relating to emissions of nitrogen oxides?
- 40 CFR 52.39 · What are the requirements of the Federal Implementation Plans (FIPs) for the Cross-State Air Pollution Rule (CSAPR) relating to emissions of sulfur dioxide?