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40 CFR Part 63, Appendix A

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
CitationRequirementApplies to RRRComment
§ 63.1(a)(1)-(4)General ApplicabilityYes
§ 63.1(a)(5)| No[Reserved]
§ 63.1(a)(6)| Yes
§ 63.1(a)(7)-(9)| No[Reserved]
§ 63.1(a)(10)-(12)| Yes
§ 63.1(b)Initial Applicability DeterminationYesEPA retains approval authority.
§ 63.1(c)(1)Applicability After Standard EstablishedYes
§ 63.1(c)(2)| Yes§ 63.1500(e) exempts area sources subject to this subpart from the obligation to obtain Title V operating permits.
§ 63.1(c)(3)-(4)| No[Reserved]
§ 63.1(c)(5)| Yes
§ 63.1(c)(6)ReclassificationYes
§ 63.1(d)| No[Reserved]
§ 63.1(e)Applicability of Permit ProgramYes
§ 63.2DefinitionsYesAdditional definitions in § 63.1503.
§ 63.3Units and AbbreviationsYes
§ 63.4(a)(1)-(2)Prohibited ActivitiesYes
§ 63.4(a)(3)-(5)| No[Reserved]
§ 63.4(b)CircumventionYes
§ 63.4(c)FragmentationYes
§ 63.5(a)Applicability of Preconstruction Review and NotificationYes
§ 63.5(b)(1)Requirements for Existing, Newly, Constructed Sources and Reconstructed SourcesYes
§ 63.5(b)(2)| No[Reserved]
§ 63.5(b)(3)-(4)| Yes
§ 63.5(b)(5)| No[Reserved]
§ 63.5(b)(6)| Yes
§ 63.5(c)| No[Reserved]
§ 63.5(d)Application for Approval of Construction or ReconstructionYes
§ 63.5(e)Approval of Construction or ReconstructionYes
§ 63.5(f)Approval of Construction or Reconstruction Based on Prior State Preconstruction ReviewYes
§ 63.6(a)Applicability for Compliance with Standards and Maintenance RequirementsYes
§ 63.6(b)(1)-(5)Compliance Dates for New and Reconstructed SourcesYes§ 63.1501 specifies dates.
§ 63.6(b)(6)| No[Reserved]
§ 63.6(b)(7)| Yes
§ 63.6(c)(1)Compliance Dates for Existing SourcesYes§ 63.1501 specifies dates.
§ 63.6(c)(2)| Yes
§ 63.6(c)(3)-(4)| No[Reserved]
§ 63.6(c)(5)| Yes
§ 63.6(d)| No[Reserved]
§ 63.6(e)(1)(i)Operation and Maintenance RequirementsNoSee § 63.1506(a)(5) for general duty requirement. Any other cross reference to § 63.6(3)(1)(i) in any other general provision referenced shall be treated as a cross reference to § 63.1506(a)(5).
§ 63.6(e)(1)(ii)| No
§ 63.6(e)(2)| No[Reserved]
§ 63.6(e)(3)Startup, Shutdown, and Malfunction PlanNo
§ 63.6(f)(1)Compliance with Nonopacity Emission StandardsNo
§ 63.6(f)(2)| Yes
§ 63.6(g)Use of an Alternative Nonopacity Emission StandardNo
§ 63.6(h)(1)Applicability for Compliance with Opacity and Visible Emission StandardsNo
§ 63.6(h)(2)Methods for Determining ComplianceYes
§ 63.6(h)(3)| No[Reserved]
§ 63.6(h)(4)-(9)| Yes
§ 63.6(i)(1)-(14)Extension of ComplianceYes
§ 63.6(i)(15)| No[Reserved]
§ 63.6(i)(16)| Yes
§ 63.6(j)Exemption from ComplianceYes
§ 63.7(a)Applicability and Performance Test DatesYesExcept § 63.1511 establishes dates for initial performance tests.
§ 63.7(b)Notification of Performance TestYes
§ 63.7(c)Quality Assurance ProgramYes
§ 63.7(d)Performance Testing FacilitiesYes
§ 63.7(e)(1)Conduct of Performance TestsNo
§ 63.7(e)(2)| Yes
§ 63.7(e)(3)| Yes
§ 63.7(f)Use of an Alternative Test MethodYes
§ 63.7(g)(1)-(3)Data Analysis, Recordkeeping, and ReportingYesExcept for § 63.7(g)(2), which is reserved.
§ 63.7(h)(1)-(5)Waiver of Performance TestsYes
§ 63.8(a)(1)Applicability for Monitoring RequirementsYes
§ 63.8(a)(2)| Yes
§ 63.8(a)(3)| No[Reserved]
§ 63.8(a)(4)| Yes
§ 63.8(b)Conduct of MonitoringYes
§ 63.8(c)(1)(i)Operation and Maintenance of Continuous Monitoring Systems (CMS)NoSee § 63.1506(a)(5) for general duty requirement.
§ 63.8(c)(1)(ii)| Yes
§ 63.8(c)(1)(iii)| No
§ 63.8(c)(2)-(8)| Yes
§ 63.8(d)(1)-(2)Quality Control ProgramYes
§ 63.8(d)(3)| Yes, except for last sentence, which refers to an SSM plan. SSM plans are not required
§ 63.8(e)Performance Evaluation of CMSYes
§ 63.8(f)(1)-(5)Use of an Alternative Monitoring MethodNo§ 63.1501(w) includes provisions for monitoring alternatives.
§ 63.8(f)(6)Alternative to the Relative Accuracy TestYes
§ 63.8(g)(1)Reduction of Monitoring DataYes
§ 63.8(g)(2)| No§ 63.1512 requires five 6-minute averages for an aluminum scrap shredder.
§ 63.8(g)(3)-(5)| Yes
§ 63.9(a)Applicability and General Information for Notification RequirementsYes
§ 63.9(b)(1)-(5)Initial NotificationsYesExcept § 63.9(b)(3) is reserved.
§ 63.9(c)Request for Compliance ExtensionYes
§ 63.9(d)Notification that Source is Subject to Special Compliance RequirementsYes
§ 63.9(e)Notification of Performance TestYes
§ 63.9(f)Notification of Opacity and Visible Emission ObservationsYes
§ 63.9(g)Additional Notification Requirement for Sources with CMSYes
§ 63.9(h)(1)-(3)Notification of Compliance StatusYesExcept § 63.1515 establishes dates notification of compliance status reports.
§ 63.9(h)(4)| No[Reserved]
§ 63.9(h)(5)-(6)| Yes
§ 63.9(i)Adjustment of Deadlines for Required CommunicationsYes
§ 63.9(j)Change in Information Already ProvidedYes
§ 63.9(k)Electronic reporting proceduresYesOnly as specified in § 63.9(j).
§ 63.10(a)Applicability and General Information for Recordkeeping and Reporting RequirementsYes
§ 63.10(b)(1)General Recordkeeping RequirementsYes
§ 63.10(b)(2)(i), (ii), (iv), (v)| No
§ 63.10(b)(2)(iii), (vi)-(xiv)| Yes§ 63.1517 includes additional requirements.
§ 63.10(b)(3)Recordkeeping Requirement for Applicability DeterminationsYes
§ 63.10(c)(1)Additional Recordkeeping Requirements for Sources with CMSYes
§ 63.10(c)(2)-(4)| No[Reserved]
§ 63.10(c)(5)| Yes
§ 63.10(c)(6)| Yes
§ 63.10(c)(7)-(8)| Yes
§ 63.10(c)(9)| No[Reserved]
§ 63.10(c)(10)-(13)| Yes
§ 63.10(c)(14)| Yes
§ 63.10(c)(15)| No
§ 63.10(d)(1)General Reporting RequirementsYes
§ 63.10(d)(2)Reporting Results of Performance TestsYes
§ 63.10(d)(3)Reporting Results of Opacity or Visible Emission ObservationsYes
§ 63.10(d)(4)Progress ReportsNoSee § 63.1516(d).
§ 63.10(d)(5)Periodic Startup, Shutdown, and Malfunction ReportsNoSee § 63.1516(d).
§ 63.10(e)(1)-(2)Additional Reporting Requirements for Sources with CMSYes
§ 63.10(e)(3)Excess Emissions and CMS Performance Report and Summary ReportYesReporting deadline given in § 63.1516.
§ 63.10(e)(4)Continuous Opacity Monitoring System (COMS) Data Produced During a Performance TestYes
§ 63.10(f)Waiver of Recordkeeping or Reporting RequirementsYes
§ 63.11(a)-(e)Control Device and Work Practice RequirementsNoFlares not applicable.
§ 63.12(a)-(c)State Authority and DelegationsYesEPA retains authority for applicability determinations.
§ 63.13AddressesYes
§ 63.14Incorporations by ReferenceYesACGIH Guidelines, ASTM D7520-13, and Interim Procedures for Estimating Risks Associated with Exposures to Mixtures of Chlorinated Dibenzo-p-Dioxins and -Dibenzofurans (CDDs and CDFs) and 1989 Update.
§ 63.15Availability of Information and ConfidentialityYes
§ 63.16Performance Track ProvisionsNo

[81 FR 38093, June 13, 2016, as amended at 85 FR 73901, Nov. 19, 2020]