---
kind: "section"
citation: "40 C.F.R. § 98.420"
title: "40"
number: "98.420"
heading: "Definition of the source category."
url: "https://uscodex.org/cfr/40/98.420"
---
# §98.420. Definition of the source category.
- (a) **The carbon dioxide (CO2) supplier source category consists of the following—**
- (1) Facilities with production process units that capture a CO2 stream for purposes of supplying CO2 for commercial applications or that capture and maintain custody of a CO2 stream in order to sequester or otherwise inject it underground. Capture refers to the initial separation and removal of CO2 from a manufacturing process or any other process.
- (2) Facilities with CO2 production wells that extract or produce a CO2 stream for purposes of supplying CO2 for commercial applications or that extract and maintain custody of a CO2 stream in order to sequester or otherwise inject it underground.
- (3) **Importers or exporters of bulk CO2.**
- (4) Facilities with process units, including but not limited to direct air capture (DAC), that capture a CO2 stream from ambient air for purposes of supplying CO2 for commercial applications or that capture and maintain custody of a CO2 stream in order to sequester or otherwise inject it underground.
- (b) **This source category is focused on upstream supply.** It does not cover:
- (1) **Storage of CO2 above ground or in geologic formations.**
- (2) **Use of CO2 in enhanced oil and gas recovery.**
- (3) **Transportation or distribution of CO2.**
- (4) **Purification, compression, or processing of CO2.**
- (5) **On-site use of CO2 captured on site.**
- (c) This source category does not include CO2 imported or exported in equipment, such as fire extinguishers.
## Notes
### Amendments
[74 FR 56374, Oct. 30, 2009, as amended at 89 FR 31943, Apr. 25, 2024]
### Authority
Authority: 42 U.S.C. 7401-7671q.
### Source
Source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.
### Amendments
[74 FR 56374, Oct. 30, 2009, as amended at 89 FR 31943, Apr. 25, 2024]