PIOGA Press
(By Gary Steinbauer, Gina Falaschi and Christina Puhnaty)
On November 11, 2022, the U.S. Environmental Protection Agency (EPA) released a pre-publication version of its supplemental proposal for Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review (Supplemental Proposal). The Supplemental Proposal has been highly anticipated since EPA published its initial proposal on November 15, 2021. EPA, Standards of Performance for New, Reconstructed, and Modified Sources and Emissions Guidelines for Existing Sources: Oil and Natural Gas Sector Climate Review, 86 Fed. Reg. 63110 (Nov. 15, 2021) (Initial Proposal).
EPA currently regulates emissions from oil and natural gas facilities under 40 C.F.R Part 60 Subparts OOOO[1] and OOOOa.[2] As part of the Initial and Supplemental Proposals, EPA would regulate oil and natural gas facilities constructed, modified, or reconstructed after November 15, 2021, under a new Subpart OOOOb. With the Supplemental Proposal, EPA has released proposed regulatory language for Subpart OOOOb. In addition, EPA released proposed regulatory text for emissions guidelines in a new Subpart OOOOc. These emissions guidelines are intended to inform states in the development, submittal, and implementation of state plans to establish standards of performance for greenhouse gases (in the form of limitations on methane) from sources existing on or before November 15, 2021. Under the Supplemental Proposal, states and tribes would be required to submit plans to EPA for review within 18 months of the publication of a final rule, with a compliance deadline for existing sources that is no later than 36 months after the deadline to submit the plan to EPA. The Supplemental Proposal also includes an updated proposed “Appendix K,” which is a protocol for determining leaks using optical gas imaging that EPA is now proposing to limit to natural gas processing plants. …