| Reference
| Applies to subpart U
| Explanation
| § 63.1(a)(1) | Yes | § 63.482 specifies definitions in addition to or that supersede definitions in § 63.2.
| § 63.1(a)(2) | Yes.
| | § 63.1(a)(3) | Yes | § 63.481(f) through (k) and § 63.160(b) identify those standards which may apply in addition to the requirements of subparts U and H of this part, and specify how compliance shall be achieved.
| § 63.1(a)(4) | Yes | Subpart U (this table) specifies the applicability of each paragraph in subpart A to subpart U.
| § 63.1(a)(5) | No | [Reserved].
| § 63.1(a)(6)-(8) | Yes.
| | § 63.1(a)(9) | No | [Reserved].
| § 63.1(a)(10) | Yes.
| | § 63.1(a)(11) | Yes.
| | § 63.1(a)(12)-(14) | Yes.
| | § 63.1(b)(1) | No | § 63.480(a) contains specific applicability criteria.
| § 63.1(b)(2) | Yes.
| | § 63.1(b)(3) | No | § 63.480(b) provides documentation requirements for EPPUs not considered affected sources.
| § 63.1(c)(1) | Yes | Subpart U (this table) specifies the applicability of each paragraph in subpart A to subpart U.
| § 63.1(c)(2) | No | Area sources are not subject to subpart U.
| § 63.1(c)(3) | No | [Reserved].
| § 63.1(c)(4) | Yes.
| | § 63.1(c)(5) | Yes | Except that affected sources are not required to submit notifications that are not required by subpart U.
| § 63.1(c)(6) | Yes
| | § 63.1(d) | No | [Reserved].
| § 63.1(e) | Yes.
| | § 63.2 | Yes | § 63.482 specifies those subpart A definitions that apply to subpart U.
| § 63.3 | Yes.
| | § 63.4(a)(1)-(3) | Yes.
| | § 63.4(a)(4) | No | [Reserved].
| § 63.4(a)(5) | Yes.
| | § 63.4(b) | Yes.
| | § 63.4(c) | Yes.
| | § 63.5(a)(1) | Yes | Except 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) | Yes | Except § 63.480(i) defines when construction or reconstruction is subject to new source standards.
| § 63.5(b)(2) | No | [Reserved].
| § 63.5(b)(3) | Yes.
| | § 63.5(b)(4) | Yes | Except that the Initial Notification and § 63.9(b) requirements do not apply.
| § 63.5(b)(5) | Yes.
| | § 63.5(b)(6) | Yes | Except that § 63.480(i) defines when construction or reconstruction is subject to the new source standards.
| § 63.5(c) | No | [Reserved].
| § 63.5(d)(1)(i) | Yes | Except that the references to the Initial Notification and § 63.9(b)(5) do not apply.
| § 63.5(d)(1)(ii) | Yes | Except that § 63.5(d)(1)(ii)(H) does not apply.
| § 63.5(d)(1)(iii) | No | § 63.506(e)(5) and § 63.502(f) specify Notification of Compliance Status requirements.
| § 63.5(d)(2) | No.
| | § 63.5(d)(3) | Yes | Except § 63.5(d)(3)(ii) does not apply, and equipment leaks subject to § 63.502 are exempt.
| § 63.5(d)(4) | Yes.
| | § 63.5(e) | Yes.
| | § 63.5(f)(1) | Yes.
| | § 63.5(f)(2) | Yes | Except that where § 63.9(b)(2) is referred to, the owner or operator need not comply.
| § 63.6(a) | Yes.
| | § 63.6(b)(1) | No | The dates specified in § 63.481(b) apply, instead.
| § 63.6(b)(2) | No.
| | § 63.6(b)(3) | No.
| | § 63.6(b)(4) | No.
| | § 63.6(b)(5) | No.
| | § 63.6(b)(6) | No | [Reserved].
| § 63.6(b)(7) | No.
| | § 63.6(c)(1) | Yes | § 63.481 specifies the compliance date.
| § 63.6(c)(2) | No.
| | § 63.6(c)(3) | No | [Reserved].
| § 63.6(c)(4) | No | [Reserved].
| § 63.6(c)(5) | Yes.
| | § 63.6(d) | No | [Reserved].
| § 63.6(e)(1)(i) | No | See § 63.483(a) for general duty requirement. Any cross reference to § 63.6(e)(1)(i) in any other general provision incorporated by reference shall be treated as a cross reference to § 63.483(a).
| § 63.6(e)(1)(ii) | No
| | § 63.6(e)(1)(iii) | Yes.
| | § 63.6(e)(2) | No | [Reserved]
| § 63.6(e)(3) | No
| | § 63.6(f)(1) | No
| | § 63.6(f)(2) | Yes | Except 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 § 63.502.
| § 63.6(f)(3) | Yes.
| | § 63.6(g) | Yes.
| | § 63.6(h) | No | Subpart U 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) | No | Dates are specified in § 63.481(e) and § 63.506(e)(3)(i).
| § 63.6(i)(4)(ii) | No.
| | § 63.6(i)(5)-(14) | Yes.
| | § 63.6(i)(15) | No | [Reserved].
| § 63.6(i)(16) | Yes.
| | § 63.6(j) | Yes.
| | § 63.7(a)(1) | Yes.
| | § 63.7(a)(2) | No. | § 63.506(e)(5) specifies 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 | § 63.504(a)(4) specifies notification requirements.
| § 63.7(c) | No | Except 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) | No | See § 63.504(a)(1). Any cross-reference to § 63.7(e)(1) in any other general provision incorporated by reference shall be treated as a cross-reference to § 63.504(a)(1).
| § 63.7(e)(2) | Yes.
| | § 63.7(e)(3) | No | Subpart U specifies requirements.
| § 63.7(e)(4) | Yes.
| | § 63.7(f) | Yes | Except that § 63.144(b)(5)(iii)(A) & (B) shall apply for process wastewater. Also, since 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) | Yes | Except that the requirements in § 63.506(e)(5) shall apply instead of references to the Notification of Compliance Status report in 63.9(h). In addition, equipment leaks subject to § 63.502 are not required to conduct performance tests.
| § 63.7(h) | Yes | Except § 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) | No | [Reserved].
| § 63.8(a)(4) | Yes.
| | § 63.8(b)(1) | Yes.
| | § 63.8(b)(2) | No | Subpart U specifies locations to conduct monitoring.
| § 63.8(b)(3) | Yes.
| | § 63.8(c)(1) | Yes.
| | § 63.8(c)(1)(i) | Yes, before July 15, 2027. No, beginning on and after July 15, 2027.
| | § 63.8(c)(1)(ii) | No | For all emission points except equipment leaks, comply with § 63.506(b)(1)(i)(B); for equipment leaks, comply with § 63.181(g)(2)(iii).
| § 63.8(c)(1)(iii) | Yes, before July 15, 2027. No, beginning on and after July 15, 2027.
| | § 63.8(c)(2) | Yes.
| | § 63.8(c)(3) | Yes.
| | § 63.8(c)(4) | No | § 63.505 specifies monitoring frequency; not applicable to equipment leaks, because § 63.502 does not require continuous monitoring systems.
| § 63.8(c)(5)-(8) | No.
| | § 63.8(d) | No.
| | § 63.8(e) | No.
| | § 63.8(f)(1)-(3) | Yes.
| | § 63.8(f)(4)(i) | No | Timeframe for submitting request is specified in § 63.506(f) or (g); not applicable to equipment leaks, because § 63.502 (through reference to subpart H) specifies acceptable alternative methods.
| § 63.8(f)(4)(ii) | No | Contents of request are specified in § 63.506(f) or (g).
| § 63.8(f)(4)(iii) | No.
| | § 63.8(f)(5)(i) | Yes.
| | § 63.8(f)(5)(ii) | No.
| | § 63.8(f)(5)(iii) | Yes.
| | § 63.8(f)(6) | No | Subpart U does not require CEM's.
| § 63.8(g) | No | Data reduction procedures specified in § 63.506(d) and (h); not applicable to equipment leaks.
| § 63.9(a) | Yes.
| | § 63.9(b) | No | Subpart U does not require an initial notification.
| § 63.9(c) | Yes.
| | § 63.9(d) | Yes.
| | § 63.9(e) | No | § 63.504(a)(4) specifies notification deadline.
| § 63.9(f) | No | Subpart U does not require opacity and visible emission standards.
| § 63.9(g) | No.
| | § 63.9(h) | No | § 63.506(e)(5) specifies Notification of Compliance Status requirements.
| § 63.9(i) | Yes.
| | § 63.9(j) | Yes | For change in major source status only.
| § 63.9(k) | Yes.
| | § 63.10(a) | Yes
| | § 63.10(b)(1) | No | § 63.506(a) specifies record retention requirements.
| § 63.10(b)(2) | No | Subpart U specifies recordkeeping requirements.
| § 63.10(b)(3) | No | § 63.480(b) requires documentation of sources that are not affected sources.
| § 63.10(c) | No | § 63.506 specifies recordkeeping requirements.
| § 63.10(d)(1) | Yes
| | § 63.10(d)(2) | No | § 63.506(e)(5) specifies performance test reporting requirements; not applicable to equipment leaks.
| § 63.10(d)(3) | No | Subpart U does not require opacity and visible emission standards.
| § 63.10(d)(4) | Yes
| | 63.10(d)(5) | No
| | § 63.10(e) | No | § 63.506 specifies reporting requirements.
| § 63.10(f) | Yes
| | § 63.11 | Yes | Except for flares subject to § 63.508, § 63.11(b) specifies requirements for flares used to comply with provisions of this subpart. § 63.504(c) contains the requirements to conduct compliance demonstrations for flares subject to this subpart that are not subject to § 63.508. § 63.11(c), (d), and (e) specifies requirements for an alternative work practice for equipment leaks.
| § 63.12 | Yes | Except that the authority of § 63.503(i) and the authority of § 63.177 (for equipment leaks) will not be delegated to States.
| §§ 63.13-63.15 | Yes | |
