| Part 63 citation
| Description
| Applicable to subpart AAAA
before
September
28, 2021
| Applicable to subpart AAAA
no later than
September 27, 2021
| Explanation
|
|---|
| § 63.1(a) | Applicability: General applicability of NESHAP in this part | Yes | Yes
| |
| § 63.1(b) | Applicability determination for stationary sources | Yes | Yes
| |
| § 63.1(c) | Applicability after a standard has been set | No
1 | Yes
| |
| § 63.1(e) | Applicability of permit program before relevant standard is set | Yes | Yes
| |
| § 63.2 | Definitions | Yes | Yes
| |
| § 63.3 | Units and abbreviations | No
1 | Yes
| |
| § 63.4 | Prohibited activities and circumvention | Yes | Yes
| |
| § 63.5(a) | Construction/reconstruction | No
1 | Yes
| |
| § 63.5(b) | Requirements for existing, newly constructed, and reconstructed sources | Yes | Yes
| |
| § 63.5(d) | Application for approval of construction or reconstruction | No
1 | Yes
| |
| § 63.5(e) and (f) | Approval of construction and reconstruction | No
1 | Yes
| |
| § 63.6(a) | Compliance with standards and maintenance requirements—applicability | No
1 | Yes
| |
| § 63.6(b) and (c) | Compliance dates for new, reconstructed, and existing sources | No
1 | Yes
| |
| § 63.6(e)(1)(i)-(ii) | Operation and maintenance requirements | Yes | No | See § 63.1955(c) for general duty requirements.
|
| § 63.6(e)(3)(i)-(ix) | SSM plan | Yes | No
| |
| § 63.6(f)(1) | Exemption of nonopacity emission standards during SSM | No | No
| |
| § 63.6(f)(2) and (3) | Compliance with nonopacity emission standards | Yes | Yes
| |
| § 63.6(g) | Use of an alternative nonopacity standard | No
1 | Yes
| |
| § 63.6(h) | Compliance with opacity and visible emission standards | No
1 | No | Subpart AAAA does not prescribe opacity or visible emission standards.
|
| § 63.6(i) | Extension of compliance with emission standards | No
1 | Yes
| |
| § 63.6(j) | Exemption from compliance with emission standards | No
1 | Yes
| |
| § 63.7 | Performance testing | No
1 | Yes
| |
| § 63.7(e)(1) | Conditions for performing performance tests | No
1 | No | 40 CFR 63.1959(f) specifies the conditions for performing performance tests.
|
| § 63.8(a) and (b) | Monitoring requirements—Applicability and conduct of monitoring | No
1 | Yes
| |
| § 63.8(c)(1) | Operation and Maintenance of continuous emissions monitoring system | No
1 | Yes
| |
| § 63.8(c)(1)(i) | Operation and Maintenance Requirements | No
1 | No | Unnecessary due to the requirements of § 63.8(c)(1) and the requirements for a quality control plan for monitoring equipment in § 63.8(d)(2).
|
| § 63.8(c)(1)(ii) | Operation and Maintenance Requirements | No
1 | No
| |
| § 63.8(c)(1)(iii) | SSM plan for monitors | No
1 | No
| |
| § 63.8(c)(2)-(8) | Monitoring requirements | No
1 | Yes
| |
| § 63.8(d)(1) | Quality control for monitors | No
1 | Yes
| |
| § 63.8(d)(2) | Quality control for monitors | No
1 | Yes
| |
| § 63.8(d)(3) | Quality control records | No
1 | No | See § 63.1983(c)(8).
|
| § 63.9(a), (c), and (d) | Notifications | No
1 | Yes
| |
| § 63.9(b) | Initial notifications | No
1 | Yes
2
| |
| § 63.9(e) | Notification of performance test | No
1 | Yes
2
| |
| § 63.9(f) | Notification of visible emissions/opacity test | No
1 | No | Subpart AAAA does not prescribe opacity or visible emission standards.
|
| § 63.9(g) | Notification when using CMS | No
1 | Yes
2
| |
| § 63.9(h) | Notification of compliance status | No
1 | Yes
2
| |
| § 63.9(i) | Adjustment of submittal deadlines | No
1 | Yes
| |
| § 63.9(j) | Change in information already provided | No
1 | Yes
| |
| § 63.10(a) | Recordkeeping and reporting—general | No
1 | Yes
| |
| § 63.10(b)(1) | General recordkeeping | No
1 | Yes
| |
| § 63.10(b)(2)(i) | Startup and shutdown records | Yes | No | See § 63.1983(c)(6) for recordkeeping for periods of startup and shutdown.
|
| § 63.10(b)(2)(ii) | Recordkeeping of failures to meet a standard | Yes | No | See § 63.1983(c)(6)-(7) for recordkeeping for any exceedance of a standard.
|
| § 63.10(b)(2)(iii) | Recordkeeping of maintenance on air pollution control equipment | Yes | Yes
| |
| § 63.10(b)(2)(iv)-(v) | Actions taken to minimize emissions during SSM | Yes | No | See § 63.1983(c)(7) for recordkeeping of corrective actions to restore compliance.
|
| § 63.10(b)(2)(vi) | Recordkeeping for CMS malfunctions | No
1 | Yes
| |
| § 63.10(b)(2)(vii)-(xiv) | Other Recordkeeping of compliance measurements | No
1 | Yes
| |
| § 63.10(c) | Additional recordkeeping for sources with CMS | No
1 | No | See § 63.1983 for required CMS recordkeeping.
|
| § 63.10(d)(1) | General reporting | No
1 | Yes
| |
| § 63.10(d)(2) | Reporting of performance test results | No
1 | Yes
| |
| § 63.10(d)(3) | Reporting of visible emission observations | No
1 | No
| |
| § 63.10(d)(4) | Progress reports for compliance date extensions | No
1 | Yes
| |
| § 63.10(d)(5) | SSM reporting | Yes | No | All exceedances must be reported in the semi-annual report required by § 63.1981(h).
|
| § 63.10(e) | Additional reporting for CMS systems | No
1 | Yes
| |
| § 63.10(f) | Recordkeeping/reporting waiver | No
1 | Yes
| |
| § 63.11 | Control device requirements/flares | No
1 | Yes | § 60.18 is required before September 27, 2021. However, § 60.18 and 63.11 are equivalent.
|
| § 63.12(a) | State authority | Yes | Yes
| |
| § 63.12(b)-(c) | State delegations | No
1 | Yes
| |
| § 63.13 | Addresses | No
1 | Yes
| |
| § 63.14 | Incorporation by reference | No
1 | Yes
| |
| § 63.15 | Availability of information and confidentiality | Yes | Yes
| |