40 CFR § 63.2834 - When do I have to comply with the standards in this subpart?

---
identifier: "/us/cfr/t40/s63.2834"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 63.2834 - When do I have to comply with the standards in this subpart?"
title_number: 40
title_name: "Protection of Environment"
section_number: "63.2834"
section_name: "When do I have to comply with the standards in this subpart?"
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "63"
part_name: "NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 7401"
regulatory_source: "57 FR 61992, Dec. 29, 1992, unless otherwise noted."
cfr_part: "63"
---


# 63.2834 When do I have to comply with the standards in this subpart?

You must comply with this subpart in accordance with one of the schedules in Table 1 of this section, as follows:

Table 1 of § 63.2834—Compliance Dates for Existing and New Sources

| If your affected source is categorized as . . . | And if . . . | Then your compliance date is . . . | Except for certainrequirements, as specified in §§ 63.2840, 63.2850, 63.2851, 63.2852, 63.2853, 63.2861, 63.2862, and 63.2870, then your compliance date is . . . |
| --- | --- | --- | --- |
| (a) an existing source |  | April 12, 2004 | September 15, 2020. |
| (b) a new source | you startup your affected source before April 12, 2001 | April 12, 2004 | September 15, 2020. |
| (c) a new source | you startup your affected source on or after April 12, 2001, but before March 18, 2020 | your startup date | September 15, 2020. |
| (d) a new source | you startup your affected source on or after March 18, 2020 | your startup date | your startup date. |

[66 FR 19011, Apr. 12, 2001, as amended at 85 FR 15626, Mar. 18, 2020]