Injection of Carbon Dioxide United Slates Environmental Protection Agency Final Rule: Mandatory Reporting of Greenhouse Gases (40 CFR 98, Subpart UU) Under subpart UU of the Greenhouse Gas (GHG) Reporting Program, facilities that inject carbon dioxide (C02) underground for enhanced oil and gas recovery or any other purpose must report basic information on the amount of C02 that is received for underground injection. How Is This Source Category Defined? The subpart UU source category comprises a well or group of wells that inject C02 into the subsurface, including Underground Injection Control (UIC) Class II wells used to enhance oil and gas recovery and wells receiving a geologic sequestration research and development (R&D) exemption from subpart RR. Facilities that report under subpart RR for a well or group of wells are not required to report under subpart UU for that well or group of wells. What GHGs Must Be Reported? All facilities that inject C02 underground must report basic information on the amount of C02 received for injection. What Information Must Be Reported? All facilities that inject C02 underground must report the following annually: • The mass of C02 received for injection for the first time into a well at the facility. • The source of the C02 received, from the following categories: C02 production wells; electric generating units; ethanol plants; pulp and paper mills; natural gas processing; gasification operations; other anthropogenic sources; C02 received from a discontinued enhanced oil and gas recovery project; or unknown. How Should GHG Data Be Calculated? All facilities that inject C02 underground must calculate the mass of C02 received using mass or volumetric flow meters (or the mass or volume of containers), based on the C02 concentration in the flow. Reporters may use best available monitoring methods (BAMM) for calculating the mass of C02 received through the first quarter of 2011 or up to the end of 2011 if a BAMM extension is approved by EPA. Where flow meters are used to calculate data, C02 flow and concentration data must be collected quarterly and aggregated to an annual quantity. To minimize the purchase and installation of new equipment, facilities subject to the UIC program may utilize the C02 flow meters installed for purposes of compliance with their existing UIC permits in order to calculate the C02 flow data. For facilities receiving C02 in containers, the mass or volume of contents in containers and concentration data must be collected quarterly and aggregated to an annual quantity. November 2010 1 40 CFR 98, Subpart UU ------- For More Information This document is provided solely for informational purposes. It does not provide legal advice, have legally binding effect, or expressly or implicitly create, expand, or limit any legal rights, obligations, responsibilities, expectations, or benefits in regard to any person. The document is intended to assist reporting facilities/owners in understanding key provisions of the rule. It is not intended to be a substitute for the rule. For technical information and implementation materials, please visit EPA's Web site at: www.epa.gov/climatechange/emissions/ghgrulemaking.html. To submit a question, select Rule Help Center, and then select Contact Us. For background information about GHGs and climate change science and policy, please see EPA's climate change Web site at: www.epa.gov/climatechange. November 2010 2 40 CFR 98, Subpart UU ------- |