StacksVerified U.S. regulatory reference

40 CFR Part 63, Table 1

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov
General provisionscitationRequirementApplies to subpart DDD?Explanation
§ 63.1(a)(1)-(6)General ApplicabilityYes
§ 63.1(a)(7)-(9)| No[Reserved].
§ 63.1(a)(10)-(12)| Yes
§ 63.1(b)(1)Initial Applicability DeterminationYes
§ 63.1(b)(2)| No[Reserved].
§ 63.1(b)(3)| Yes
§ 63.1(c)(1)-(2)Applicability After Standard EstablishedYes
§ 63.1(c)(3)-(4)| No[Reserved].
§ 63.1(c)(5)-(e)| Yes
§ 63.2DefinitionsYes
§ 63.3Units and AbbreviationsYes
§ 63.4(a)(1)-(2)Prohibited ActivitiesYes
§ 63.4(a)(3)-(5)| No[Reserved].
§ 63.4(b)-(c)| Yes
§ 63.5(a)(1)-(b)(2)Construction/Reconstruction ApplicabilityYes
§ 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)-(f)| Yes
§ 63.6(a)-(d)| Yes
§ 63.6(e)(1)(i)General Duty to Minimize EmissionsNoSee § 63.1180(d) for general duty requirement.
§ 63.6(e)(1)(ii)Requirement to Correct Malfunctions As Soon As PossibleNo§ 63.1187(b) specifies additional requirements.
§ 63.6(e)(1)(iii)| Yes
§ 63.6(e)(2)| No[Reserved].
§ 63.6(e)(3)Startup, Shutdown, Malfunction (SSM) PlanNoStartups and shutdowns addressed in § 63.1197.
§ 63.6(f)(1)SSM ExemptionNo
§ 63.6(f)(2)-(g)| Yes
§ 63.6(h)(1)SSM ExemptionNo
§ 63.6(h)(2)-(j)| Yes
§ 63.7(a)-(d)Performance Testing RequirementsYes
§ 63.7(e)(1)Conduct of Performance TestsNoSee § 63.1180.
§ 63.7(e)(2)-(f)| Yes
§ 63.7(g)(1)Data Analysis, Recordkeeping, and ReportingYes
§ 63.7(g)(2)| No[Reserved].
§ 63.7(g)(3)-(h)| Yes
§ 63.8(a)-(b)Monitoring RequirementsYes
§ 63.8(c)(1)(i)General Duty to Minimize Emissions and CMS OperationNoSee § 63.1180(e) for general duty requirement.
§ 63.8(c)(1)(ii)| Yes
§ 63.8(c)(1)(iii)Requirement to Develop SSM Plan for CMSNo
§ 63.8(c)(2)-(d)(2)| Yes
§ 63.8(d)(3)Written Procedures for CMSYes, except for last sentence, which refers to SSM plan. SSM plans are not required.
§ 63.8(e)-(g)| Yes
§ 63.9(a)Applicability and General InformationYes
§ 63.9(b)(1)-(2)Initial NotificationsYes
§ 63.9(b)(3)| No[Reserved].
§ 63.9(b)(4)-(b)(5)| Yes
§ 63.9(c)-(j)| Yes
§ 63.9(k)| YesOnly as specified in § 63.9(j).
§ 63.10(a)Recordkeeping and Reporting RequirementsYes
§ 63.10(b)(1)General Recordkeeping RequirementsYes
§ 63.10(b)(2)(i)Recordkeeping of Occurrence and Duration of Startups and ShutdownsNo
§ 63.10(b)(2)(ii)Recordkeeping of MalfunctionsNoSee § 63.1193(c) for recordkeeping of (ii) occurrence and duration and (iii) actions taken during malfunction.
§ 63.10(b)(2)(iii)Maintenance RecordsYes
§ 63.10(b)(2)(iv)-(v)Actions Taken to Minimize Emissions During SSMNo
§ 63.10(b)(2)(vi)Recordkeeping for CMS MalfunctionsYes
§ 63.10(b)(2)(vii)-(xiv)Other CMS RequirementsYes
§ 63.10(b)(3)Recordkeeping Requirement for Applicability DeterminationsYes
§ 63.10(c)(1)-(6)Additional Recordkeeping Requirements for Sources with CMSYes
§ 63.10(c)(7)-(8)Additional Recordkeeping Requirements for CMS—Identifying Exceedances and Excess EmissionsYes
§ 63.10(c)(9)| No[Reserved].
§ 63.10(c)(10)-(11)| NoSee § 63.1192 for recordkeeping of malfunctions.
§ 63.10(c)(12)-(14)| Yes
§ 63.10(c)(15)Use of SSM PlanNo
§ 63.10(d)(1)-(4)General Reporting RequirementsYes
§ 63.10(d)(5)SSM ReportsNoSee § 63.1193(f) for reporting of malfunctions.
§ 63.10(e)-(f)Additional CMS Reports Excess Emission/CMS Performance Reports COMS Data Reports Recordkeeping/Reporting WaiverYes
§ 63.11(a)-(b)Control Device Requirements Applicability FlaresNoFlares will not be used to comply with the emissions limits.
§ 63.11(c)Alternative Work Practice for Monitoring Equipment for LeaksYes
§ 63.11(d)Alternative Work Practice StandardYes
§ 63.11(e)| Yes
§ 63.12State Authority and DelegationsYes
§ 63.13AddressesYes
§ 63.14Incorporation by ReferenceYes
§ 63.15Information Availability/ConfidentialityYes
§ 63.16Performance Track ProvisionsYes

[80 FR 45331, July 29, 2015, as amended at 85 FR 73897, Nov. 19, 2020; 85 FR 84262, Dec. 28, 2020]