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
CitationSubjectApplies to subpart FFFFFF?Explanation
63.1(a)(1), (a)(2), (a)(3), (a)(4), (a)(6), (a)(10)-(a)(12), (b)(1), (b)(3), (c)(1), (c)(2), (c)(5), (e)ApplicabilityYes.
63.1(a)(5), (a)(7)-(a)(9), (b)(2), (c)(3), (c)(4), (d)ReservedNo.
63.2DefinitionsYes.
63.3Units and AbbreviationsYes.
63.4Prohibited Activities and CircumventionYes.
63.5Preconstruction Review and Notification RequirementsNo.
63.6(a), (b)(1)-(b)(5), (b)(7), (c)(1), (c)(2), (c)(5), (e)(3)(i), (e)(3)(iii)-(e)(3)(ix), (f), (g), (i), (j)Compliance with Standards and Maintenance RequirementsYes.
63.6(b)(6), (c)(3), (c)(4), (d), (e)(2), (e)(3)(ii), (h)(3), (h)(5)(iv)ReservedNo.
63.6(h)(1)-(h)(4), (h)(5)(i)-(h)(5)(iii), (h)(6)-(h)(9)| NoSubpart FFFFFF does not include opacity or visible emissions standards.
63.7Performance Testing RequirementsYes.
63.8(a)(1), (a)(2), (b), (f)(1)-(5)Monitoring RequirementsYes.
63.8(a)(3)ReservedNo.
63.8(c), (d), (e), (f)(6), (g)| NoSubpart FFFFFF does not require a continuous monitoring system.
63.8(a)(4)| NoSubpart FFFFFF does not require flares.
63.9(a), (b)(1), (b)(2), (b)(5), (c), (d), (e), (f), (g), (h)(1)-(h)(3), (h)(5), (h)(6), (i), (j)Notification RequirementsYes.
63.9(b)(3), (h)(4)ReservedNo.
63.9(b)(4)| No.
63.9(f)| NoSubpart FFFFFF does not include opacity or visible emissions standards.
63.9(g)| NoSubpart FFFFFF does not require a continuous monitoring system.
63.10(a), (b)(2)(i)-(b)(2)(v), (b)(2)(xiv), (d)(1), (d)(2), (d)(4), (d)(5), (e)(1), (e)(2), (f)Recordkeeping and Reporting RequirementsYes.
63.10(c)(2)-(c)(4), (c)(9)ReservedNo.
63.10(b)(2)(vi)-(b)(2)(xiii), (c)(1), (c)(5)-(c)(14), (e)(1)-(e)(2), (e)(4)|Subpart FFFFFF does not require a continuous monitoring system.
63.10(d)(3)| NoSubpart FFFFFF does not include opacity or visible emissions standards.
63.10(e)(3)| Yes.
63.11Control Device RequirementsNoSubpart FFFFFF does not require flares.
63.12State Authorities and DelegationsYes.
63.13AddressesYes.
63.14Incorporations by ReferenceYes
63.15Availability of Information and ConfidentialityYes
63.16Performance Track ProvisionsYes.