40 CFR § 49.4181 - Other combustion devices.

---
identifier: "/us/cfr/t40/s49.4181"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 49.4181 - Other combustion devices."
title_number: 40
title_name: "Protection of Environment"
section_number: "49.4181"
section_name: "Other combustion devices."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "B"
subchapter_name: "GRANTS AND OTHER FEDERAL ASSISTANCE"
part_number: "49"
part_name: "INDIAN COUNTRY: AIR QUALITY PLANNING AND MANAGEMENT"
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: "63 FR 7271, Feb. 12, 1998, unless otherwise noted."
cfr_part: "49"
---


# 49.4181 Other combustion devices.

(a) *Applicability.* The VOC emission control requirements in this section apply to each owner or operator of any existing enclosed combustor or flare located at an oil and natural gas source as identified in § 49.4169(b) that is used to control VOC emissions, but that is not required under §§ 49.4173 through 49.4175 of this rule.

(b) *Retrofit requirements.* All existing enclosed combustors and flares must be equipped with an operational electronically controlled automatic ignition device.