# 98.420 Definition of the source category.
(a) The carbon dioxide (CO<sub>2</sub>) supplier source category consists of the following:
(1) Facilities with production process units that capture a CO<sub>2</sub> stream for purposes of supplying CO<sub>2</sub> for commercial applications or that capture and maintain custody of a CO<sub>2</sub> stream in order to sequester or otherwise inject it underground. Capture refers to the initial separation and removal of CO<sub>2</sub> from a manufacturing process or any other process.
(2) Facilities with CO<sub>2</sub> production wells that extract or produce a CO<sub>2</sub> stream for purposes of supplying CO<sub>2</sub> for commercial applications or that extract and maintain custody of a CO<sub>2</sub> stream in order to sequester or otherwise inject it underground.
(3) Importers or exporters of bulk CO<sub>2</sub>.
(4) Facilities with process units, including but not limited to direct air capture (DAC), that capture a CO<sub>2</sub> stream from ambient air for purposes of supplying CO<sub>2</sub> for commercial applications or that capture and maintain custody of a CO<sub>2</sub> 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 CO<sub>2</sub> above ground or in geologic formations.
(2) Use of CO<sub>2</sub> in enhanced oil and gas recovery.
(3) Transportation or distribution of CO<sub>2</sub>.
(4) Purification, compression, or processing of CO<sub>2</sub>.
(5) On-site use of CO<sub>2</sub> captured on site.
(c) This source category does not include CO<sub>2</sub> imported or exported in equipment, such as fire extinguishers.
[74 FR 56374, Oct. 30, 2009, as amended at 89 FR 31943, Apr. 25, 2024]