---
kind: "section"
citation: "40 C.F.R. § 98.470"
title: "40"
number: "98.470"
heading: "Definition of the source category."
url: "https://uscodex.org/cfr/40/98.470"
---

# §98.470. Definition of the source category.

- (a) The injection of carbon dioxide (CO2) source category comprises any well or group of wells that inject a CO2 stream into the subsurface.
- (b) If you report under subpart RR of this part for a well or group of wells, you shall not report under this subpart for that well or group of wells.
- (c) If you report under [subpart VV](/cfr/40/subpartVV.md) of this part for a well or group of wells, you shall not report under this subpart for that well or group of wells. If you previously met the source category definition for [subpart UU](/cfr/40/subpartUU.md) of this part for a project where CO2 is injected in enhanced recovery operations for oil and other hydrocarbons (CO2-EOR) and then began using the standard designated as CSA/ANSI ISO 27916:19 (incorporated by reference, see [§ 98.7](/cfr/40/98.7.md)) such that you met the definition of the source category for [subpart VV](/cfr/40/subpartVV.md) during a reporting year, you must report under [subpart UU](/cfr/40/subpartUU.md) for the portion of the year before you began using CSA/ANSI ISO 27916:19 and report under [subpart VV](/cfr/40/subpartVV.md) for the portion of the year after you began using CSA/ANSI ISO 27916:19.
- (d) A facility that is subject to this part only because it is subject to [subpart UU](/cfr/40/subpartUU.md) of this part is not required to report emissions under [subpart C](/cfr/40/subpartC.md) of this part or any other subpart listed in § [98.2(a)(1)](/cfr/40/98.2.md?p=a-1) or [(2)](/cfr/40/98.2.md?p=a-2).

## Notes

### Amendments

[75 FR 75086, Dec. 1, 2010, as amended at 89 FR 31948, Apr. 25, 2024]

### Source

Source: 75 FR 75086, Dec. 1, 2010, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401-7671q.

### Source

Source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.

### Amendments

[75 FR 75086, Dec. 1, 2010, as amended at 89 FR 31948, Apr. 25, 2024]