StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 22

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov

Before January 21, 2021, as stated in § 63.6020, you must comply with the applicable General Provisions (GP) requirements according to the following table:

CitationSubjectBrief description of applicable sectionsApplicable to Subpart XXXX?
Using a control deviceNot using a control device
§ 63.1ApplicabilityInitial applicability determination; applicability after standard established; permit requirements; extensions; notificationsYes | Yes.
§ 63.2DefinitionsDefinitions for part 63 standardsYes | Yes.
§ 63.3Units and AbbreviationsUnits and abbreviations for part 63 standardsYes | Yes.
§ 63.4Prohibited ActivitiesProhibited activities; compliance date; circumvention; severabilityYes | Yes.
§ 63.5Construction/ReconstructionApplicability; applications; approvalsYes | Yes.
§ 63.6(a)ApplicabilityGP apply unless compliance extension; GP apply to area sources that become majorYes | Yes.
§ 63.6(b)(1)-(4)Compliance Dates for New and Reconstructed SourcesStandards apply at effective date; 3 years after effective date; upon startup; 10 years after construction or reconstruction commences for CAA section 112(f)Yes | Yes.
§ 63.6(b)(5)NotificationMust notify if commenced construction or reconstruction after proposalYes | Yes.
§ 63.6(b)(6)[Reserved] |
§ 63.6(b)(7)Compliance Dates for New and Reconstructed Area Sources that Become Major| NoNo.
§ 63.6(c)(1)-(2)Compliance Dates for Existing SourcesComply according to date in subpart, which must be no later than 3 years after effective date; for CAA section 112(f) standards, comply within 90 days of effective date unless compliance extensionYes | Yes.
§ 63.6(c)(3)-(4)[Reserved] |
§ 63.6(c)(5)Compliance Dates for Existing Area Sources that Become MajorArea sources that become major must comply with major source standards by date indicated in subpart or by equivalent time period (for example, 3 years)Yes | Yes.
§ 63.6(d)[Reserved] |
§ 63.6(e)(1)-(2)Operation & MaintenanceOperate to minimize emissions at all times; correct malfunctions as soon as practicable; and operation and maintenance requirements independently enforceable; information Administrator will use to determine if operation and maintenance requirements were metYes | Yes.
§ 63.6(e)(3)Startup, Shutdown, and Malfunction Plan| YesNo.
§ 63.6(f)(1)Compliance Except During Startup, Shutdown, and Malfunction| No. See § 63.5990(a)No.
§ 63.6(f)(2)-(3)Methods for Determining ComplianceCompliance based on performance test; operation and maintenance plans; records; inspectionYes | Yes.
§ 63.6(g)(1)-(3)Alternative StandardProcedures for getting an alternative standardYes | Yes.
§ 63.6(h)Opacity/Visible Emission (VE) Standards| NoNo.
§ 63.6(i)Compliance ExtensionProcedures and criteria for Administrator to grant compliance extensionYes | Yes.
§ 63.6(j)Presidential Compliance ExemptionPresident may exempt source category from requirement to comply with ruleYes | Yes.
§ 63.7(a)(1)-(2)Performance Test Dates| NoNo.
§ 63.7(a)(3)CAA section 114 AuthorityAdministrator may require a performance test under CAA section 114 at any timeYes | No.
§ 63.7(b)(1)Notification of Performance TestMust notify Administrator 60 days before the testYes | No.
§ 63.7(b)(2)Notification of ReschedulingIf rescheduling a performance test is necessary, must notify Administrator 5 days before scheduled date of rescheduled dateYes | No.
§ 63.7(c)Quality Assurance/Test PlanRequirement to submit site-specific test plan 60 days before the test or on date Administrator agrees with: test plan approval procedures; performance audit requirements; and internal and external quality assurance procedures for testingYes | No.
§ 63.7(d)Testing FacilitiesRequirements for testing facilitiesYes | No.
§ 63.7(e)(1)Conditions for Conducting Performance TestsPerformance tests must be conducted under representative conditions; cannot conduct performance tests during startup, shutdown, and malfunction; not a violation to exceed standard during startup, shutdown, and malfunctionYes | No.
§ 63.7(e)(2)Conditions for Conducting Performance TestsMust conduct according to rule and the EPA test methods unless Administrator approves alternativeYes | No.
§ 63.7(e)(3)Test Run DurationMust have three test runs of at least 1 hour each; compliance is based on arithmetic mean of three runs; and conditions when data from an additional test run can be usedYes | No.
§ 63.7(f)Alternative Test MethodProcedures by which Administrator can grant approval to use an alternative test methodYes | No.
§ 63.7(g)Performance Test Data AnalysisMust include raw data in performance test report; must submit performance test data 60 days after end of test with the Notification of Compliance Status report; and keep data for 5 yearsYes | No.
§ 63.7(h)Waiver of TestsProcedures for Administrator to waive performance testYes | No.
§ 63.8(a)(1)Applicability of Monitoring RequirementsSubject to all monitoring requirements in standardYes | Yes.
§ 63.8(a)(2)Performance SpecificationsPerformance Specifications in appendix B of 40 CFR part 60 applyYes | No.
§ 63.8(a)(3)[Reserved] |
§ 63.8(a)(4)Monitoring with Flares| NoNo.
§ 63.8(b)(1)MonitoringMust conduct monitoring according to standard unless Administrator approves alternativeYes | Yes.
§ 63.8(b)(2)-(3)Multiple Effluents and Multiple Monitoring SystemsSpecific requirements for installing monitoring systems; must install on each effluent before it is combined and before it is released to the atmosphere unless Administrator approves otherwise; if more than one monitoring system on an emission point, must report all monitoring system results, unless one monitoring system is a backupYes | Yes.
§ 63.8(c)(1)Monitoring System Operation and MaintenanceMaintain monitoring system in a manner consistent with good air pollution control practicesApplies as modified by § 63.5990(e) and (f) | No.
§ 63.8(c)(1)(i)Routine and Predictable Startup, Shutdown, and Malfunction| NoNo.
§ 63.8(c)(1)(ii)Startup, Shutdown, and Malfunction not in Startup, Shutdown, and Malfunction Plan| NoNo.
§ 63.8(c)(1)(iii)Compliance with Operation and Maintenance RequirementsHow Administrator determines if source complying with operation and maintenance requirements; review of source operation and maintenance procedures, records, manufacturer's instructions, recommendations, and inspection of monitoring systemYes | Yes.
§ 63.8(c)(2)-(3)Monitoring System InstallationMust install to get representative emission and parameter measurements; must verify operational status before or at performance testYes | No.
§ 63.8(c)(4)CMS Requirements| Applies as modified by § 63.5990(f)No.
§ 63.8(c)(5)Continuous Opacity Monitoring Systems Minimum Procedures| NoNo.
§ 63.8(c)(6)CMS Requirements| Applies as modified by § 63.5990(e)No.
§ 63.8(c)(7)-(8)CMS RequirementsOut-of-control periods, including reportingYes | No.
§ 63.8(d)CMS Quality Control| Applies as modified by § 63.5990(e) and (f)No.
§ 63.8(e)CMS Performance Evaluation| NoNo.
§ 63.8(f)(1)-(5)Alternative Monitoring MethodProcedures for Administrator to approve alternative monitoringYes | Yes.
§ 63.8(f)(6)Alternative to Relative Accuracy Test| NoNo.
§ 63.8(g)Data Reduction| Applies as modified by § 63.5990(f)No.
§ 63.9(a)Notification RequirementsApplicability and state delegationYes | Yes.
§ 63.9(b)(1)-(5)Initial NotificationsSubmit notification 120 days after effective date; notification of intent to construct/reconstruct, notification of commencement of construct/reconstruct, notification of startup; and contents of eachYes | Yes.
§ 63.9(c)Request for Compliance ExtensionCan request if cannot comply by date or if installed best available control technology or lowest achievable emission rateYes | Yes.
§ 63.9(d)Notification of Special Compliance Requirements for New SourceFor sources that commence construction between proposal and promulgation and want to comply 3 years after effective dateYes | Yes.
§ 63.9(e)Notification of Performance TestNotify Administrator 60 days priorYes | No.
§ 63.9(f)Notification of VE/Opacity TestNoNo |
§ 63.9(g)Additional Notifications When Using CMSNoNo |
§ 63.9(h)Notification of Compliance StatusContents; due 60 days after end of performance test or other compliance demonstration, except for opacity/VE, which are due 30 days after; when to submit to Federal vs. State authorityYes | Yes.
§ 63.9(i)Adjustment of Submittal DeadlinesProcedures for Administrator to approve change in when notifications must be submittedYes | Yes.
§ 63.9(j)Change in Previous InformationMust submit within 15 days after the changeYes | Yes.
§ 63.10(a)Recordkeeping/ReportingApplies to all, unless compliance extension; when to submit to Federal vs. State authority; procedures for owners of more than 1 sourceYes | Yes.
§ 63.10(b)(1)Recordkeeping/ReportingGeneral Requirements; keep all records readily available; and keep for 5 years.Yes | Yes.
§ 63.10(b)(2)(i)-(iv)Records related to Startup, Shutdown, and MalfunctionYesNo |
§ 63.10(b)(2)(vi) and (x)-(xi)CMS RecordsMalfunctions, inoperative, out-of-control; calibration checks; adjustments, maintenanceYes | No.
§ 63.10(b)(2)(vii)-(ix)RecordsMeasurements to demonstrate compliance with emission limitations; -performance test, performance evaluation, and VE observation results; and measurements to determine conditions of performance tests and performance evaluationsYes | Yes.
§ 63.10(b)(2)(xii)RecordsRecords when under waiverYes | Yes.
§ 63.10(b)(2)(xiii)Records| NoNo.
§ 63.10(b)(2)(xiv)RecordsAll documentation supporting Initial Notification and Notification of Compliance StatusYes | Yes.
§ 63.10(b)(3)RecordsApplicability determinationsYes | Yes.
§ 63.10(c)Records| NoNo.
§ 63.10(d)(1)General Reporting RequirementsRequirement to reportYes | Yes.
§ 63.10(d)(2)Report of Performance Test ResultsWhen to submit to Federal or State authorityYes | No.
§ 63.10(d)(3)Reporting Opacity or VE Observations| NoNo.
§ 63.10(d)(4)Progress ReportsMust submit progress reports on schedule if under compliance extensionYes | Yes.
§ 63.10(d)(5)Startup, Shutdown, and Malfunction Reports| YesNo.
§ 63.10(e)Additional CMS Reports| NoNo.
§ 63.10(f)Waiver for Recordkeeping/ReportingProcedures for Administrator to waiveYes | Yes.
§ 63.11Flares| NoNo.
§ 63.12DelegationState authority to enforce standardsYes | Yes.
§ 63.13AddressesAddresses where reports, notifications, and requests are sentYes | Yes.
§ 63.14Incorporation by ReferenceTest methods incorporated by referenceYes | Yes.
§ 63.15Availability of InformationPublic and confidential informationYes | Yes.

After January 20, 2021, as stated in § 63.6020, you must comply with the applicable General Provisions (GP) requirements according to the following table:

CitationSubjectBrief description of applicable sectionsApplicable to subpart XXXX?
Using a control deviceNot using a control device
§ 63.1ApplicabilityInitial applicability determination; applicability after standard established; permit requirements; extensions; notificationsYes | Yes.
§ 63.2DefinitionsDefinitions for part 63 standardsYes | Yes.
§ 63.3Units and AbbreviationsUnits and abbreviations for part 63 standardsYes | Yes.
§ 63.4Prohibited ActivitiesProhibited activities; compliance date; circumvention; severabilityYes | Yes.
§ 63.5Construction/ReconstructionApplicability; applications; approvalsYes | Yes.
§ 63.6(a)ApplicabilityGP apply unless compliance extension; GP apply to area sources that become majorYes | Yes.
§ 63.6(b)(1)-(4)Compliance Dates for New and Reconstructed SourcesStandards apply at effective date; 3 years after effective date; upon startup; 10 years after construction or reconstruction commences for CAA section 112(f)Yes | Yes.
§ 63.6(b)(5)NotificationMust notify if commenced construction or reconstruction after proposalYes | Yes.
§ 63.6(b)(6)[Reserved] |
§ 63.6(b)(7)Compliance Dates for New and Reconstructed Area Sources that Become Major| NoNo.
§ 63.6(c)(1)-(2)Compliance Dates for Existing SourcesComply according to date in subpart, which must be no later than 3 years after effective date; for CAA section 112(f) standards, comply within 90 days of effective date unless compliance extensionYes | Yes.
§ 63.6(c)(3)-(4)[Reserved] |
§ 63.6(c)(5)Compliance Dates for Existing Area Sources that Become MajorArea sources that become major must comply with major source standards by date indicated in subpart or by equivalent time period (for example, 3 years)Yes | Yes.
§ 63.6(d)[Reserved] |
§ 63.6(e)(1)(i)-(ii)Operations and Maintenance| No. See § 63.5990(a)No. See § 63.5990(a).
§ 63.6(e)(1)(iii)-(2)Operation and MaintenanceOperate to minimize emissions at all times; correct malfunctions as soon as practicable; and operation and maintenance requirements independently enforceable; information Administrator will use to determine if operation and maintenance requirements were metYes | Yes.
§ 63.6(e)(3)Startup, Shutdown, and Malfunction Plan| NoNo.
§ 63.6(f)(1)Startup, Shutdown, and Malfunction Exemption| No. See § 63.5990(a)No.
§ 63.6(f)(2)-(3)Methods for Determining ComplianceCompliance based on performance test; operation and maintenance plans; records; inspectionYes | Yes.
§ 63.6(g)(1)-(3)Alternative StandardProcedures for getting an alternative standardYes | Yes.
§ 63.6(h)Opacity/Visible Emissions (VE) Standards| NoNo.
§ 63.6(i)Compliance ExtensionProcedures and criteria for Administrator to grant compliance extensionYes | Yes.
§ 63.6(j)Presidential Compliance ExemptionPresident may exempt source category from requirement to comply with ruleYes | Yes.
§ 63.7(a)(1)-(2)Performance Test Dates| NoNo.
§ 63.7(a)(3)CAA section 114 AuthorityAdministrator may require a performance test under CAA section 114 at any timeYes | No.
§ 63.7(b)(1)Notification of Performance TestMust notify Administrator 60 days before the testYes | No.
§ 63.7(b)(2)Notification of ReschedulingIf rescheduling a performance test is necessary, must notify Administrator 5 days before scheduled date of rescheduled dateYes | No.
§ 63.7(c)Quality Assurance/Test PlanRequirement to submit site-specific test plan 60 days before the test or on date Administrator agrees with: test plan approval procedures; performance audit requirements; and internal and external quality assurance procedures for testingYes | No.
§ 63.7(d)Testing FacilitiesRequirements for testing facilitiesYes | No.
§ 63.7(e)(1)Conditions for Conducting Performance TestsPerformance tests must be conducted under representative conditions; cannot conduct performance tests during startup, shutdown, and malfunctionNo. See § 63.5993(c) | No.
§ 63.7(e)(2)Conditions for Conducting Performance TestsMust conduct according to rule and the EPA test methods unless Administrator approves alternativeYes | No.
§ 63.7(e)(3)Test Run DurationMust have three test runs of at least 1 hour each; compliance is based on arithmetic mean of three runs; and conditions when data from an additional test run can be usedYes | No.
§ 63.7(f)Alternative Test MethodProcedures by which Administrator can grant approval to use an alternative test methodYes | No.
§ 63.7(g)Performance Test Data AnalysisMust include raw data in performance test report; must submit performance test data 60 days after end of test with the Notification of Compliance Status report; and keep data for 5 yearsYes | No.
§ 63.7(h)Waiver of TestsProcedures for Administrator to waive performance testYes | No.
§ 63.8(a)(1)Applicability of Monitoring RequirementsSubject to all monitoring requirements in standardYes | Yes.
§ 63.8(a)(2)Performance SpecificationsPerformance Specifications in appendix B of 40 CFR part 60 applyYes, if using a CEMS | Yes, if using a CEMS.
§ 63.8(a)(3)[Reserved] |
§ 63.8(a)(4)Monitoring with Flares| NoNo.
§ 63.8(b)(1)MonitoringMust conduct monitoring according to standard unless Administrator approves alternativeYes | Yes.
§ 63.8(b)(2)-(3)Multiple Effluents and Multiple Monitoring SystemsSpecific requirements for installing monitoring systems; must install on each effluent before it is combined and before it is released to the atmosphere unless Administrator approves otherwise; if more than one monitoring system on an emission point, must report all monitoring system results, unless one monitoring system is a backupYes | Yes.
§ 63.8(c)(1)Monitoring System Operation and MaintenanceMaintain monitoring system in a manner consistent with good air pollution control practicesApplies as modified by § 63.5990(e) and (f) | Applies as modified by § 63.5990(e) and (f).
§ 63.8(c)(1)(i)Routine and Predictable Startup, Shutdown, and Malfunction| NoNo.
§ 63.8(c)(1)(ii)Startup, Shutdown, and Malfunction not in Startup, Shutdown, and Malfunction Plan| NoNo.
§ 63.8(c)(1)(iii)Compliance with Operation and Maintenance RequirementsHow the Administrator determines if source complying with operation and maintenance requirements; review of source operation and maintenance procedures, records, manufacturer's instructions, recommendations, and inspection of monitoring systemNo | No.
§ 63.8(c)(2)-(3)Monitoring System InstallationMust install to get representative emission and parameter measurements; must verify operational status before or at performance testYes | Yes.
§ 63.8(c)(4)CMS Requirements| Applies as modified by § 63.5990(f)Applies as modified by § 63.5990(f).
§ 63.8(c)(5)Continuous Opacity Monitoring Systems Minimum Procedures| NoNo.
§ 63.8(c)(6)CMS Requirements| Applies as modified by § 63.5990(e)Applies as modified by § 63.5990(e).
§ 63.8(c)(7)-(8)CMS RequirementsOut-of-control periods, including reportingYes | Yes.
§ 63.8(d)(1)-(2)CMS Quality Control| Applies as modified by § 63.5990(e) and (f)Applies as modified by § 63.5990(e) and (f).
§ 63.8(d)(3)Written Procedures for CMS| No. See § 63.5990(f)(2).No. See § 63.5990(f)(2).
§ 63.8(e)CMS Performance EvaluationPerformance evaluation of continuous monitoring systemsYes | Yes.
§ 63.8(f)(1)-(5)Alternative Monitoring MethodProcedures for Administrator to approve alternative monitoringYes | Yes.
§ 63.8(f)(6)Alternative to Relative Accuracy TestRequesting an alternative to the relative accuracy test for a CEMSYes | Yes.
§ 63.8(g)Data ReductionHow to reduce CMS dataApplies as modified by § 63.5990(f) | Applies as modified by § 63.5990(f).
§ 63.9(a)Notification RequirementsApplicability and state delegationYes | Yes.
§ 63.9(b)(1)-(5)Initial NotificationsSubmit notification 120 days after effective date; notification of intent to construct/reconstruct, notification of commencement of construct/reconstruct, notification of startup; and contents of eachYes | Yes.
§ 63.9(c)Request for Compliance ExtensionCan request if cannot comply by date or if installed best available control technology or lowest achievable emission rateYes | Yes.
§ 63.9(d)Notification of Special Compliance Requirements for New SourceFor sources that commence construction between proposal and promulgation and want to comply 3 years after effective dateYes | Yes.
§ 63.9(e)Notification of Performance TestNotify Administrator 60 days priorYes | No.
§ 63.9(f)Notification of VE/Opacity Test| NoNo.
§ 63.9(g)Additional Notifications When Using CMSAdditional notification requirements for sources with continuous monitoring systemsYes | Yes.
§ 63.9(h)Notification of Compliance StatusContents; due 60 days after end of performance test or other compliance demonstration, except for opacity/VE, which are due 30 days after; when to submit to Federal vs. State authorityYes | Yes.
§ 63.9(i)Adjustment of Submittal DeadlinesProcedures for Administrator to approve change in when notifications must be submittedYes | Yes.
§ 63.9(j)Change in Previous InformationMust submit within 15 days after the changeYes | Yes.
§ 63.9(k)NotificationElectronic reporting proceduresYes, as specified in § 63.9(j) | Yes, as specified in § 63.9(j).
§ 63.10(a)Recordkeeping/ReportingApplies to all, unless compliance extension; when to submit to Federal vs. State authority; procedures for owners of more than 1 sourceYes | Yes.
§ 63.10(b)(1)Recordkeeping/ReportingGeneral Requirements; keep all records readily available; and keep for 5 yearsYes | Yes.
§ 63.10(b)(2)(i) and (iv-v)Records related to Startup, Shutdown, and Malfunction| NoNo.
§ 63.10(b)(2)(ii)Recordkeeping of failures to meet a standard| No. See 63.6017 for recordkeeping of (1) date, time, cause, and duration; (2) listing of affected source or equipment, whether the failure occurred during startup, shutdown, or malfunction, an estimate of the quantity of each regulated pollutant emitted over the standard and the method used to estimate the emissions; and (3) actions to minimize emissions and correct the failure
§ 63.10(b)(2)(iii), (vi), and (x)-(xi)CMS RecordsMalfunctions, inoperative, out-of-control; calibration checks; adjustments, maintenanceYes | Yes.
§ 63.10(b)(2)(vii)-(ix)RecordsMeasurements to demonstrate compliance with emission limitations; performance test, performance evaluation, and VE observation results; and measurements to determine conditions of performance tests and performance evaluationsYes | Yes.
§ 63.10(b)(2)(xii)RecordsRecords when under waiverYes | Yes.
§ 63.10(b)(2)(xiii)RecordsEmission levels relative to the criterion for obtaining permission to use an alternative to the relative accuracy testYes | Yes.
§ 63.10(b)(2)(xiv)RecordsAll documentation supporting Initial Notification and Notification of Compliance StatusYes | Yes.
§ 63.10(b)(3)RecordsApplicability determinationsYes | Yes.
§ 63.10(c)(1)-(14)RecordsAdditional recordkeeping requirements for sources with continuous monitoring systemsYes | Yes.
§ 63.10(c)(15)Use of SSM plan| NoNo.
§ 63.10(d)(1)General Reporting RequirementsRequirement to reportYes | Yes.
§ 63.10(d)(2)Report of Performance Test ResultsWhen to submit to Federal or State authorityYes | No.
§ 63.10(d)(3)Reporting Opacity or VE Observations| NoNo.
§ 63.10(d)(4)Progress ReportsMust submit progress reports on schedule if under compliance extensionYes | Yes.
§ 63.10(d)(5)Startup, Shutdown, and Malfunction ReportsSee § 63.6017(d) for malfunction reporting requirementsNo | No.
§ 63.10(e)Additional CMS ReportsAdditional reporting requirements for sources with continuous monitoring systemsYes | Yes.
§ 63.10(f)Waiver for Recordkeeping/ReportingProcedures for Administrator to waiveYes | Yes.
§ 63.11Flares| NoNo.
§ 63.12DelegationState authority to enforce standardsYes | Yes.
§ 63.13AddressesAddresses where reports, notifications, and requests are sentYes | Yes.
§ 63.14Incorporation by ReferenceTest methods incorporated by referenceYes | Yes.
§ 63.15Availability of InformationPublic and confidential informationYes | Yes.

[85 FR 44765, July 24, 2020. Redesignated and amended at 89 FR 94916, 94919, Nov. 29, 2024]