40 CFR § 98.510 - Definition of the source category.

---
identifier: "/us/cfr/t40/s98.510"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 98.510 - Definition of the source category."
title_number: 40
title_name: "Protection of Environment"
section_number: "98.510"
section_name: "Definition of the source category."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "C"
subchapter_name: "AIR PROGRAMS"
part_number: "98"
part_name: "MANDATORY GREENHOUSE GAS REPORTING"
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. 7401-7671q."
regulatory_source: "74 FR 56374, Oct. 30, 2009, unless otherwise noted."
cfr_part: "98"
---


# 98.510 Definition of the source category.

This source category includes any facility that produces caprolactam, glyoxal, or glyoxylic acid. This source category excludes the production of glyoxal through the LaPorte process (*i.e.,* the gas-phase catalytic oxidation of ethylene glycol with air in the presence of a silver or copper catalyst).