Regulations last checked for updates: Mar 28, 2026

Title 40 - Protection of Environment last revised: Dec 15, 2026
Appendix - Table 1 to Subpart PPP of Part 63—Applicability of General Provisions to Subpart PPP Affected Sources
Reference Applies to subpart PPP Explanation
§ 63.1(a)(1)Yes§ 63.1423 specifies definitions in addition to or that supersede definitions in § 63.2.
§ 63.1(a)(2)Yes
§ 63.1(a)(3)Yes§ 63.1422(f) through (k) of this subpart and § 63.160(b) identify those standards which overlap with the requirements of subparts PPP and H and specify how compliance shall be achieved.
§ 63.1(a)(4)YesSubpart PPP (this table) specifies the applicability of each paragraph in subpart A to subpart PPP.
§ 63.1(a)(5)NoReserved.
§ 63.1(a)(6)Yes
§ 63.1(a)(7)-(9)NoReserved.
§ 63.1(a)(10)Yes
§ 63.1(a)(11)Yes
§ 63.1(a)(12)-(14)Yes
§ 63.1(b)(1)No§ 63.1420(a) contains specific applicability criteria.
§ 63.1(b)(2)Yes
§ 63.1(b)(3)Yes
§ 63.1(c)(1)YesSubpart PPP (this table) specifies the applicability of each paragraph in subpart A to subpart PPP.
§ 63.1(c)(2)NoArea sources are not subject to subpart PPP.
§ 63.1(c)(3)NoReserved.
§ 63.1(c)(4)NoReserved.
§ 63.1(c)(5)YesExcept that affected sources are not required to submit notifications overridden by this table.
§ 63.1(c)(6)Yes
§ 63.1(d)NoReserved.
§ 63.1(e)Yes
§ 63.2Yes§ 63.1423 specifies those subpart A definitions that apply to subpart PPP.
§ 63.3Yes
§ 63.4(a)(1)-(3)Yes
§ 63.4(a)(4)NoReserved.
§ 63.4(a)(5)Yes
§ 63.4(b)Yes
§ 63.4(c)Yes
§ 63.5(a)(1)YesExcept the terms “source” and “stationary source” should be interpreted as having the same meaning as “affected source.”
§ 63.5(a)(2)Yes
§ 63.5(b)(1)YesExcept § 63.1420(g) defines when construction or reconstruction is subject to new source standards.
§ 63.5(b)(2)NoReserved.
§ 63.5(b)(3)Yes
§ 63.5(b)(4)YesExcept that the initial notification requirements in § 63.1439(e)(3) shall apply instead of the requirements in § 63.9(b).
§ 63.5(b)(5)Yes
§ 63.5(b)(6)YesExcept that § 63.1420(g) defines when construction or reconstruction is subject to the new source standards.
§ 63.5(c)NoReserved.
§ 63.5(d)(1)(i)Yes
§ 63.5(d)(1)(ii)YesExcept that § 63.5(d)(1)(ii)(H) does not apply.
§ 63.5(d)(1)(iii)No§ 63.1439(e)(5) and § 63.1434(e) specify notification of compliance status requirements.
§ 63.5(d)(2)No
§ 63.5(d)(3)YesExcept § 63.5(d)(3)(ii) does not apply, and equipment leaks subject to § 63.1434 are exempt.
§ 63.5(d)(4)Yes
§ 63.5(e)Yes
§ 63.5(f)(1)Yes
§ 63.5(f)(2)YesExcept that where § 63.9(b)(2) is referred to, the owner or operator need not comply.
§ 63.6(a)Yes
§ 63.6(b)(1)Yes
§ 63.6(b)(2)Yes
§ 63.6(b)(3)Yes
§ 63.6(b)(4)Yes
§ 63.6(b)(5)Yes
§ 63.6(b)(6)NoReserved.
§ 63.6(b)(7)No
§ 63.6(c)(1)Yes§ 63.1422 specifies the compliance date.
§ 63.6(c)(2)No
§ 63.6(c)(3)NoReserved.
§ 63.6(c)(4)NoReserved.
§ 63.6(c)(5)Yes
§ 63.6(d)NoReserved.
§ 63.6(e)(1)(i)NoSee § 63.1420(h)(4) for general duty requirement.
§ 63.6(e)(1)(ii)No
§ 63.6(e)(1)(iii)Yes
§ 63.6(e)(2)NoReserved.
§ 63.6(e)(3)No
§ 63.6(f)(1)No
§ 63.6(f)(2)YesExcept § 63.7(c), as referred to in § 63.6(f)(2)(iii)(D) does not apply, and except that § 63.6(f)(2)(ii) does not apply to equipment leaks subject to § 63.1434.
§ 63.6(f)(3)Yes
§ 63.6(g)Yes
§ 63.6(h)NoSubpart PPP does not require opacity and visible emission standards.
§ 63.6(i)(1)Yes
§ 63.6(i)(2)Yes
§ 63.6(i)(3)Yes
§ 63.6(i)(4)(i)(A)Yes
§ 63.6(i)(4)(i)(B)NoDates are specified in § 63.1422(e) and § 63.1439(e)(4)(i) for all emission points except equipment leaks, which are covered under § 63.182(a)(6)(i).
§ 63.6(i)(4)(ii)No
§ 63.6(i)(5)-(14)Yes
§ 63.6(i)(15)NoReserved.
§ 63.6(i)(16)Yes
§ 63.6(j)Yes
§ 63.7(a)(1)Yes
§ 63.7(a)(2)No§ 63.1439(e) (5) and (6) specify the submittal dates of performance test results for all emission points except equipment leaks; for equipment leaks, compliance demonstration results are reported in the Periodic Reports.
§ 63.7(a)(3)Yes
§ 63.7(a)(4)Yes
§ 63.7(b)No§ 63.1437(a)(4) specifies notification requirements.
§ 63.7(c)NoExcept if the owner or operator chooses to submit an alternative nonopacity emission standard for approval under § 63.6(g).
§ 63.7(d)Yes
§ 63.7(e)(1)NoSee § 63.1437(a).
§ 63.7(e)(2)Yes
§ 63.7(e)(3)NoSubpart PPP specifies requirements. See § 63.1426(c) and (g).
§ 63.7(e)(4)Yes
§ 63.7(f)YesSince a site-specific test plan is not required, the notification deadline in § 63.7(f)(2)(i) shall be 60 days prior to the performance test, and in § 63.7(f)(3) approval or disapproval of the alternative test method shall not be tied to the site-specific test plan.
§ 63.7(g)YesExcept the notification of compliance status report requirements in § 63.1439(e)(5) shall apply instead of those in §§ 63.9(h) and 63.1439(e)(9) specified how and when to submit performance test and performance evaluation results. In addition, equipment leaks subject to § 63.1434 are not required to conduct performance tests.
§ 63.7(h)YesExcept § 63.7(h)(4)(ii) is not applicable, since the site-specific test plans in § 63.7(c)(2) are not required.
§ 63.8(a)(1)Yes
§ 63.8(a)(2)No
§ 63.8(a)(3)NoReserved.
§ 63.8(a)(4)YesExcept for flares subject to § 63.1436.
§ 63.8(b)(1)Yes
§ 63.8(b)(2)NoSubpart PPP specifies locations to conduct monitoring.
§ 63.8(b)(3)Yes
§ 63.8(c)(1)Yes
§ 63.8(c)(1)(i)NoSee § 63.1420(h)(4) for general duty requirement.
§ 63.8(c)(1)(ii)No
§ 63.8(c)(1)(iii)No
§ 63.8(c)(2)Yes
§ 63.8(c)(3)Yes
§ 63.8(c)(4)No§ 63.1438 specifies monitoring requirements; not applicable to equipment leaks, because § 63.1434 does not require continuous monitoring systems.
§ 63.8(c)(5)-(8)No
§ 63.8(d)No
§ 63.8(e)YesYes, but only applies for CEMS, except this subpart specifies how and when the performance evaluation results are reported.
§ 63.8(f)(1)-(3)Yes
§ 63.8(f)(4)(i)YesExcept the timeframe for submitting request is specified in § 63.1439(f) or (g); not applicable to equipment leaks, because § 63.1434 (through subpart H of this part) specifies acceptable alternative methods.
§ 63.8(f)(4)(ii)Yes
§ 63.8(f)(4)(iii)Yes
§ 63.8(f)(5)(i)Yes
§ 63.8(f)(5)(ii)No
§ 63.8(f)(5)(iii)Yes
§ 63.8(f)(6)YesSubpart PPP does not require CEMS except it allows the option to use CEMS for process vents and storage vessels in ethylene oxide service.
§ 63.8(g)YesApplies only to CEMS. Other data reduction procedures specified in § 63.1439(d) and (h); not applicable to equipment leaks.
§ 63.9(a)Yes
§ 63.9(b)NoThe initial notification requirements are specified in § 63.1439(e)(3).
§ 63.9(c)Yes
§ 63.9(d)Yes
§ 63.9(e)No§ 63.1437(a)(4) specifies notification deadline.
§ 63.9(f)NoSubpart PPP does not require opacity and visible emission standards.
§ 63.9(g)No
§ 63.9(h)No§ 63.1439(e)(5) specifies notification of compliance status requirements.
§ 63.9(i)Yes
§ 63.9(j)YesFor change in major source status only.
§ 63.9(k)Yes
§ 63.10(a)Yes
§ 63.10(b)(1)No§ 63.1439(a) specifies record retention requirements.
§ 63.10(b)(2)NoThis subpart specifies recordkeeping requirements including in §§ 63.1430(a) and 63.1439(b).
§ 63.10(b)(3)Yes
§ 63.10(c)No§ 63.1439 specifies recordkeeping requirements.
§ 63.10(d)(1)Yes
§ 63.10(d)(2)No§ 63.1439(e)(9) specifies performance test reporting requirements; not applicable to equipment leaks.
§ 63.10(d)(3)NoSubpart PPP does not require opacity and visible emission standards.
§ 63.10(d)(4)Yes
§ 63.10(d)(5)NoThis subpart specifies reporting requirements in § 63.1439.
§ 63.10(e)No§ 63.1439 specifies reporting requirements.
§ 63.10(f)Yes
§ 63.11YesExcept § 63.11(b) does not apply as specified in § 63.1436.
§ 63.12YesExcept that the authority of § 63.177 (for equipment leaks) will not be delegated to states.
§ 63.13-63.15Yes
[91 FR 13185, Mar. 18, 2026]
authority: 42 U.S.C. 7401
source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.