40 CFR § 63.8689 - How do I demonstrate initial compliance with the emission limitations?

---
identifier: "/us/cfr/t40/s63.8689"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 63.8689 - How do I demonstrate initial compliance with the emission limitations?"
title_number: 40
title_name: "Protection of Environment"
section_number: "63.8689"
section_name: "How do I demonstrate initial compliance with the emission limitations?"
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"
---


# 63.8689 How do I demonstrate initial compliance with the emission limitations?

(a) You must demonstrate initial compliance with each emission limitation that applies to you according to Table 4 to this subpart.

(b) Except as specified in paragraph (d) of this section, you must establish each site-specific operating limit in Table 2 to this subpart that applies to you according to the requirements in § 63.8687 and Table 3 to this subpart.

(c) You must submit the Notification of Compliance Status containing the results of the initial compliance demonstration according to the requirements in § 63.8692(e).

(d) For control devices used to comply with the particulate matter standards in Table 1 to this subpart, you may establish any of the operating limits for pressure drop range (*i.e.,* a minimum and a maximum pressure drop) across the control device using manufacturers' specifications in lieu of complying with paragraph (b) of this section.

[68 FR 24577, May 7, 2003, as amended at 85 FR 14549, Mar. 12, 2020]