40 CFR Part 63, Table 1
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
| General provisionscitation | Requirement | Applies to subpart NN | Explanation |
|---|---|---|---|
| § 63.1(a)(1)-(5) | Applicability | Yes | |
| § 63.1(a)(6) | | Yes | ||
| § 63.1(a)(7)-(9) | | No | [Reserved]. | |
| § 63.1(a)(10)-(12) | | Yes | ||
| § 63.1(b)(1) | Initial Applicability Determination | Yes | |
| § 63.1(b)(2) | | No | [Reserved]. | |
| § 63.1(b)(3) | | Yes | ||
| § 63.1(c)(1)-(2) | | Yes | ||
| § 63.1(c)(3)-(4) | | No | [Reserved]. | |
| § 63.1(c)(5)-(e) | | Yes | ||
| § 63.2 | Definitions | Yes | Additional definitions in § 63.881. |
| § 63.3 | Units and Abbreviations | Yes | |
| § 63.4(a)(1)-(2) | Prohibited Activities | Yes | |
| § 63.4(a)(3)-(5) | | No | [Reserved]. | |
| § 63.4(b)-(c) | | Yes | ||
| § 63.5(a)-(b)(2) | Construction/Reconstruction Applicability | Yes | |
| § 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) | Application for Approval of Construction/Reconstruction | Yes | |
| § 63.5(e) | Approval of Construction/Reconstruction | Yes | |
| § 63.5(f) | Approval of Construction/Reconstruction Based on State Review | Yes | |
| § 63.6(a)-(d) | Compliance with Standards and Maintenance Requirements | Yes | |
| § 63.6(e)(1)(i) | General Duty to Minimize Emissions | No | See § 63.882 for general duty requirements. |
| § 63.6(e)(1)(ii) | Requirement to Correct Malfunctions As Soon As Possible | No | |
| § 63.6(e)(1)(iii) | | Yes | ||
| § 63.6(e)(2) | | No | [Reserved]. | |
| § 63.6(e)(3) | Startup, Shutdown, and Malfunction (SSM) Plan | No | Startups and shutdowns addressed in § 63.888. |
| § 63.6(f)(1) | SSM Exemption | No | |
| § 63.6(f)(2)-(3) | Methods for Determining Compliance | Yes | |
| § 63.6(g) | Use of an Alternative Nonopacity Emission | Yes | |
| § 63.6(h)(1) | SSM Exemption | No | |
| § 63.6(h)(2)-(j) | | Yes | ||
| § 63.7(a)-(d) | | Yes | § 63.884 has specific requirements. | |
| § 63.7(e)(1) | Performance Testing | No | See § 63.882. |
| § 63.7(e)(2)-(4) | | Yes | ||
| § 63.7(f) | Alternative Test Method | Yes | |
| § 63.7(g)(1) | Data Analysis | Yes | |
| § 63.7(g)(2) | | No | [Reserved]. | |
| § 63.7(g)(3) | | Yes | ||
| § 63.7(h) | Waiver of Performance Test | Yes | |
| § 63.8(a)-(b) | Monitoring Requirements | Yes | |
| § 63.8(c)(1)(i) | General Duty to Minimize Emissions and CMS Operation | No | See § 63.882(b) for general duty requirement. |
| § 63.8(c)(1)(ii) | | Yes | ||
| § 63.8(c)(1)(iii) | Requirement to Develop SSM Plan for CMS | No | |
| § 63.8(c)(2)-(d)(2) | | Yes | ||
| § 63.8(d)(3) | Written Procedures for CMS | Yes, except for last sentence, which refers to SSM plan. SSM plans are not required | |
| § 63.8(e)-(g) | | Yes | ||
| § 63.9(a) | Notification Requirements | Yes | |
| § 63.9(b)(1)-(2) | Initial Notifications | Yes | |
| § 63.9(b)(3) | | No | [Reserved]. | |
| § 63.9(b)(4)-(5) | | Yes | ||
| § 63.9(c)-(j) | | Yes | ||
| § 63.10(a) | Recordkeeping and Reporting-Requirements | Yes | |
| § 63.10(b)(1) | General Recordkeeping Requirements | Yes | |
| § 63.10(b)(2)(i) | Recordkeeping of Occurrence and Duration of Startups and Shutdowns | No | |
| § 63.10(b)(2)(ii) | Recordkeeping of Malfunctions | No | See § 63.886 for recordkeeping of occurrence and duration of malfunctions and recordkeeping of actions taken during malfunction. |
| § 63.10(b)(2)(iii) | Maintenance Records | Yes | |
| § 63.10(b)(2)(iv)-(v) | Actions Taken to Minimize Emissions During SSM | No | |
| § 63.10(b)(2)(vi) | Recordkeeping for CMS Malfunctions | Yes | |
| § 63.10(b)(2)(vii)-(xiv) | Other CMS Requirements | Yes | |
| § 63.10(b)(3) | Recordkeeping Requirement for Applicability Determinations | Yes | |
| § 63.10(c)(1)-(6) | Additional Recordkeeping Requirements for Sources with CMS | Yes | |
| § 63.10(c)(7)-(8) | Additional Recordkeeping Requirements for CMS—Identifying Exceedances and Excess Emissions | Yes | |
| § 63.10(c)(9) | | No | [Reserved]. | |
| § 63.10(c)(10)-(11) | | No | See § 63.886 for recordkeeping of malfunctions. | |
| § 63.10(c)(12)-(14) | | Yes | ||
| § 63.10(c)(15) | Use of SSM Plan | No | |
| § 63.10(d)(1)-(4) | General Reporting Requirements | Yes | |
| § 63.10(d)(5) | SSM Reports | No | See § 63.886(c)(2) for reporting of malfunctions. |
| § 63.10(e)-(f) | Additional CMS Reports Excess Emission/CMS Performance Reports COMS Data Reports Recordkeeping/Reporting Waiver | Yes | |
| § 63.11(a)-(b) | Control Device Requirements Applicability Flares | No | Flares will not be used to comply with the emissions limits. |
| § 63.11(c) | Alternative Work Practice for Monitoring Equipment for Leaks | Yes | |
| § 63.11(d) | Alternative Work Practice Standard | Yes | |
| § 63.11(e) | Alternative Work Practice Requirements | Yes | |
| § 63.12 | State Authority and Delegations | Yes | |
| § 63.13 | Addresses | Yes | |
| § 63.14 | Incorporation by Reference | Yes | |
| § 63.15 | Information Availability/Confidentiality | Yes | |
| § 63.16 | Performance Track Provisions | Yes |