40 CFR § 98.427 - Records that must be retained.

---
identifier: "/us/cfr/t40/s98.427"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 98.427 - Records that must be retained."
title_number: 40
title_name: "Protection of Environment"
section_number: "98.427"
section_name: "Records that must be retained."
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"
---


# 98.427 Records that must be retained.

In addition to the records required by § 98.3(g) of subpart A of this part, you must retain the records specified in paragraphs (a) through (c) of this section, as applicable.

(a) The owner or operator of a facility containing production process units or DAC process units must retain quarterly records of captured or transferred CO<sub>2</sub> streams and composition.

(b) The owner or operator of a CO<sub>2</sub> production well facility must maintain quarterly records of the mass flow or volumetric flow of the extracted or transferred CO<sub>2</sub> stream and concentration and density if volumetric flow meters are used.

(c) Importers or exporters of CO<sub>2</sub> must retain annual records of the mass flow, volumetric flow, and mass of CO<sub>2</sub> imported or exported.

(d) Facilities subject to § 98.426(h) must retain records of CO<sub>2</sub> in metric tons that is transferred to each subpart RR facility.

[74 FR 56374, Oct. 30, 2009, as amended at 80 FR 64660, Oct. 23, 2015; 89 FR 31944, Apr. 25, 2024]