Rule2024-26643

Waste Emissions Charge for Petroleum and Natural Gas Systems: Procedures for Facilitating Compliance, Including Netting and Exemptions

Primary source

Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.

Published
November 18, 2024
Effective
January 17, 2025

Issuing agencies

Environmental Protection Agency

Abstract

The Environmental Protection Agency (EPA) is promulgating a regulation to facilitate compliance with the requirements of the Waste Emissions Charge in the Clean Air Act's (CAA) Methane Emissions Reduction Program (MERP). Enacted as part of the Inflation Reduction Act (IRA), this program requires the EPA to impose and collect an annual charge on methane emissions that exceed waste emissions thresholds specified by Congress.

Full Text

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<title>Federal Register, Volume 89 Issue 222 (Monday, November 18, 2024)</title>
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[Federal Register Volume 89, Number 222 (Monday, November 18, 2024)]
[Rules and Regulations]
[Pages 91094-91195]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-26643]



[[Page 91093]]

Vol. 89

Monday,

No. 222

November 18, 2024

Part V





Environmental Protection Agency





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40 CFR Parts 2, 98, and 99





Waste Emissions Charge for Petroleum and Natural Gas Systems: 
Procedures for Facilitating Compliance, Including Netting and 
Exemptions; Final Rule

Federal Register / Vol. 89 , No. 222 / Monday, November 18, 2024 / 
Rules and Regulations

[[Page 91094]]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 2, 98, and 99

[EPA-HQ-OAR-2023-0434; FRL-10246.1-03-OAR]
RIN 2060-AW02


Waste Emissions Charge for Petroleum and Natural Gas Systems: 
Procedures for Facilitating Compliance, Including Netting and 
Exemptions

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is promulgating a 
regulation to facilitate compliance with the requirements of the Waste 
Emissions Charge in the Clean Air Act's (CAA) Methane Emissions 
Reduction Program (MERP). Enacted as part of the Inflation Reduction 
Act (IRA), this program requires the EPA to impose and collect an 
annual charge on methane emissions that exceed waste emissions 
thresholds specified by Congress.

DATES: This final rule is effective January 17, 2025.

ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-HQ-OAR-2023-0434. All documents in the docket are 
listed in the <a href="https://www.regulations.gov">https://www.regulations.gov</a> index. Although listed in the 
index, some information is not publicly available, e.g., confidential 
business information (CBI) or other information whose disclosure is 
restricted by statute. Certain other material, such as copyrighted 
material, is not placed on the internet and will be publicly available 
only in hard copy. Publicly available docket materials are available 
either electronically in <a href="https://www.regulations.gov">https://www.regulations.gov</a> or in hard copy at 
the EPA Docket Center, WJC West Building, Room 3334, 1301 Constitution 
Ave. NW, Washington, DC. This Docket Facility is open from 8:30 a.m. to 
4:30 p.m., Monday through Friday, excluding legal holidays. The 
telephone number for the Public Reading Room is (202) 566-1744 and the 
telephone number for the Air Docket is (202) 566-1742.

FOR FURTHER INFORMATION CONTACT: Jennifer Bohman, Climate Change 
Division, Office of Atmospheric Protection (MC-6207A), Environmental 
Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460; 
telephone number: (202) 343-9548; email address: <a href="/cdn-cgi/l/email-protection#4f222a3d3f0f2a3f2e61282039"><span class="__cf_email__" data-cfemail="bfd2dacdcfffdacfde91d8d0c9">[email&#160;protected]</span></a>.
    World wide web (WWW). In addition to being available in the docket, 
an electronic copy of this final rule will also be available through 
the WWW. Following the Administrator's signature, a copy of this final 
rule will be posted on the EPA's Inflation Reduction Act Methane 
Emissions Reduction Program website at <a href="https://www.epa.gov/inflation-reduction-act/methane-emissions-reduction-program">https://www.epa.gov/inflation-reduction-act/methane-emissions-reduction-program</a>.

SUPPLEMENTARY INFORMATION: 
    Regulated entities. This final regulation affects certain owners or 
operators of facilities in certain segments of the petroleum and 
natural gas systems industry that report more than 25,000 metric tons 
(mt) of carbon dioxide equivalent (CO<INF>2</INF>e) pursuant to the 
requirements codified at 40 Code of Federal Regulations (CFR) part 98, 
subpart W (Petroleum and Natural Gas Systems) (hereafter referred to as 
``part 98, subpart W''). Per the requirements of CAA section 136(d), 
the industry segments to which the waste emissions charge may apply are 
offshore petroleum and natural gas production, onshore petroleum and 
natural gas production, onshore natural gas processing, onshore gas 
transmission compression, underground natural gas storage, liquefied 
natural gas storage, liquefied natural gas import and export equipment, 
onshore petroleum and natural gas gathering and boosting, and onshore 
natural gas transmission pipeline. Regulated categories and entities 
include, but are not limited to, those listed in Table 1 of this 
preamble:

                               Table 1--Examples of Affected Entities by Category
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                                                 North American Industry
                    Category                      Classification System       Examples of affected facilities
                                                         (NAICS)
----------------------------------------------------------------------------------------------------------------
Petroleum and Natural Gas Systems..............                   486210  Pipeline transportation of natural
                                                                           gas.
                                                                  221210  Natural gas processing and
                                                                           transmission compression.
                                                                  211120  Crude petroleum extraction.
                                                                  211130  Natural gas extraction.
----------------------------------------------------------------------------------------------------------------

    Table 1 of this preamble is not intended to be exhaustive, but 
rather provides a guide for readers regarding facilities likely to be 
affected by this final rule. This table lists the types of facilities 
that the EPA is now aware could potentially be affected by this action. 
Other types of facilities than those listed in the table could also be 
subject to requirements. To determine whether you would be affected by 
this action, you should carefully examine the applicability criteria 
found in 40 CFR part 99, subpart A (General Provisions) and the 
applicability criteria found in 40 CFR part 98, subpart A (General 
Provisions) and subpart W (Petroleum and Natural Gas Systems). If you 
have questions regarding the applicability of this action to a 
particular facility, consult the person listed in the FOR FURTHER 
INFORMATION CONTACT section.
    The EPA must collect charges from owners or operators of applicable 
facilities that both: (1) Report more than 25,000 metric tons (mt) of 
carbon dioxide equivalent (CO<INF>2</INF>e) of greenhouse gases (GHGs) 
per year pursuant to the petroleum and natural gas systems source 
category requirements of the Greenhouse Gas Reporting Rule, and (2) 
exceed methane emissions intensity thresholds set forth in CAA section 
136 for different types of applicable facilities. This final rule 
facilitates compliance with provisions of the CAA, including those 
related to netting of emissions for purposes of determining the charge 
and various exemptions to the charge; establishes confidentiality 
determinations for data elements included in waste emissions charge 
filings; and establishes filing and auditing procedures to facilitate 
compliance with the statutory requirements.
    Acronyms and abbreviations. The following acronyms and 
abbreviations are used in this document.

BOEM Bureau of Ocean Energy Management
CAA Clean Air Act
CBI confidential business information
CEMS continuous emission monitoring system
CFR Code of Federal Regulations
CH<INF>4</INF> methane
CO<INF>2</INF> carbon dioxide
CO<INF>2</INF>e carbon dioxide equivalent

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e-GGRT electronic Greenhouse Gas Reporting Tool
EG emission guidelines
EIA Energy Information Administration
EPA U.S. Environmental Protection Agency
ET Eastern time
FR Federal Register
GHG greenhouse gas
GHGRP Greenhouse Gas Reporting Program
GWP Global Warming Potential
IRA Inflation Reduction Act of 2022
ICR Information Collection Request
LDC local distribution company
LNG liquified natural gas
mmBtu million British thermal units
MMscf million standard cubic feet
mt metric tons
N<INF>2</INF>O nitrous oxide
NAICS North American Industry Classification System
NGLs natural gas liquids
NSPS new source performance standards
OMB Office of Management and Budget
PRA Paperwork Reduction Act
RFA Regulatory Flexibility Act
RY reporting year
scfh standard cubic feet per hour
U.S. United States
UMRA Unfunded Mandates Reform Act of 1995
UNFCCC United Nations Framework Convention on Climate Change
VOC volatile organic compound
WEC waste emissions charge
WWW World Wide Web

Table of Contents

I. Background
    A. How is this preamble organized?
    B. Executive Summary
    C. Background and Related Actions
    D. Legal Authority
II. Procedures for Facilitating Compliance, Including Netting and 
Exemptions
    A. Final Definitions To Support WEC Implementation and 
Associated Revisions to Part 98, Subpart A
    B. Common Ownership or Control for Netting of Emissions
    C. Waste Emissions Thresholds
    D. Exemptions to the Waste Emissions Charge
III. General Requirements of the Final Rule
    A. WEC Filing Requirements
    B. Remittance and Assessment of WEC
    C. Authorizing the Designated Representative
    D. General Recordkeeping Requirements
    E. General Provisions, Including Auditing and Compliance and 
Enforcement
    F. Other Final Minor Revisions or Clarifications
IV. Final Confidentiality Determinations for Certain Data Reporting 
Elements
    A. Overview and Background
    B. Final Confidentiality Determinations for New Data Elements
    C. Final Amendments to 40 CFR Part 2
    D. Final Reporting Determinations for Inputs to Emission 
Equations
    E. Changes to Confidentiality Determinations for Data Elements 
Reported Under Subpart W
V. Impacts of the Final Rule
VI. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review and 
Executive Order 14094: Modernizing Regulatory Review
    B. Paperwork Reduction Act (PRA)
    C. Regulatory Flexibility Act (RFA)
    D. Unfunded Mandates Reform Act (UMRA)
    E. Executive Order 13132: Federalism
    F. Executive Order 13175: Consultation and Coordination With 
Indian Tribal Governments
    G. Executive Order 13045: Protection of Children From 
Environmental Health Risks and Safety Risks
    H. Executive Order 13211: Actions That Significantly Affect 
Energy Supply, Distribution, or Use
    I. National Technology Transfer and Advancement Act
    J. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations and Executive Order 14096: Revitalizing our Nation's 
Commitment to Environmental Justice for All
    K. Congressional Review Act
    L. Judicial Review
    M. Determination under CAA Section 307(d)
    N. Severability

I. Background

A. How is this preamble organized?

    This first section (section I) of this preamble contains background 
information regarding the final rule. This section also discusses the 
EPA's legal authority under the Clean Air Act (CAA) to promulgate 
implementing regulations for aspects of the waste emissions charge, 
codified at 40 CFR part 99 (hereafter referred to as ``part 99''). 
Section I of the preamble also discusses the EPA's legal authority to 
make confidentiality determinations for new data elements included in 
waste emissions charge filings (WEC filings) required by the final 
rule. Section II. of this preamble contains detailed information on the 
provisions in this final rule to facilitate implementation of CAA 
section 136(c) through (g), in particular the netting and exemption 
provisions. Section II. of this preamble also contains information on 
the revisions to 40 CFR part 98, subpart A to harmonize part 99 and 
part 98 reporting obligations. Section III. of this preamble describes 
the general requirements for the final rule, including procedures to 
facilitate filing and compliance. Section IV. of this preamble 
discusses the final confidentiality determinations for new data 
reporting elements for the proposed part 99 and also discusses 
confidentiality determinations for two data elements reported under 
part 98, subpart W. Section V. of this preamble discusses the impacts 
of this action. Section VI. of this preamble describes the statutory 
and Executive order requirements applicable to this final action.

B. Executive Summary

    In August 2022, Congress passed, and President Biden signed, the 
Inflation Reduction Act of 2022 (IRA) into law. Section 60113 of the 
IRA created the Methane Emission Reduction Program (MERP) and amended 
the Clean Air Act (CAA) by adding section 136, ``Methane Emissions and 
Waste Reduction Incentive Program for Petroleum and Natural Gas 
Systems''. CAA section 136, as designed by Congress, establishes a 
three-part framework to help States, industry, and communities reduce 
methane (CH<INF>4</INF>) emissions from the oil and gas sector. It 
further complemented a recently finalized rule under section 111 of the 
CAA (that was proposed at the time the Inflation Reduction Act was 
passed) to reduce methane emissions from new and existing oil and gas 
facilities. Oil and natural gas facilities are the nation's largest 
industrial source of methane, a greenhouse gas (GHG) that is 28 times 
more potent than carbon dioxide (CO<INF>2</INF>) and is responsible for 
approximately one third of all warming resulting from anthropogenic 
emissions of greenhouse gases.\1\ The three-part framework established 
by Congress in CAA section 136 addresses these emissions by: (1) 
directing the EPA to impose and collect a ``Waste Emissions Charge'' 
(WEC) on methane emissions from high-emitting and inefficient oil and 
gas operations; (2) directing the EPA to update subpart W of the 
Greenhouse Gas Reporting Program to ensure accurate reporting of 
methane emissions by oil and natural gas facilities that is based on 
empirical data; and (3) providing over $1 billion in financial and 
technical assistance to assist the industry, States, and communities in 
deploying methane mitigation and monitoring solutions. By implementing 
provisions of the WEC, this final rule helps to fulfill one of the 
pillars of this three-part framework. As Congress intended, the WEC, 
including the provisions finalized in this final rule, will incentivize 
a variety of near-term actions to reduce methane emissions from oil and 
natural gas operations while the EPA and States

[[Page 91096]]

work to implement the EPA's recently finalized CAA section 111 methane 
standards.
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    \1\ IPCC, 2021: Summary for Policymakers. In: Climate Change 
2021: The Physical Science Basis. Contribution of Working Group I to 
the Sixth Assessment Report of the Intergovernmental Panel on 
Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. 
Connors, C. P[eacute]an, S. Berger, N. Caud, Y. Chen, L. Goldfarb, 
M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. 
Maycock, T. Waterfield, O. Yelek[ccedil]i, R. Yu, and B. Zhou 
(eds.)]. Cambridge University Press, Cambridge, United Kingdom and 
New York, NY, USA, pp. 3-32, doi:10.1017/9781009157896.001.
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    This action is also intended to work hand-in-hand with the other 
two elements of the CAA section 136 framework. Earlier this year, the 
EPA finalized a rule (89 FR 42062, May 14, 2024) (hereafter referred to 
as the ``2024 Subpart W Final Rule'') that fulfills Congress's 
directive in CAA section 136 to improve the reporting of GHG emissions 
under subpart W of the Greenhouse Gas Reporting Program and ensure that 
oil and gas facilities' reporting requirements are based on empirical 
data and more accurately reflect emissions. Because CAA section 136 
requires that the EPA utilize subpart W emissions reports as the basis 
for determining the applicability of the WEC and calculating WEC 
obligations for owners and operators of applicable facilities, the 
EPA's recent revisions to subpart W are an important adjunct to this 
final rule that will ensure WEC obligations are based on the most 
accurate and comprehensive emissions data available. In addition, to 
implement the third part of the CAA section 136 framework, the EPA is 
partnering with the U.S. Department of Energy (DOE) to provide up to 
$1.36 billion in financial and technical assistance to a broad range of 
stakeholders to identify, measure, and mitigate emissions from the oil 
and gas sector. As described in section I.C.2. of this preamble, the 
EPA and its partners are acting expeditiously to award this funding 
through a combination of formula and competitive grant processes. These 
funds will accelerate the deployment of methane monitoring and 
mitigation technologies that will reduce methane emissions from oil and 
natural gas facilities and, potentially, help reduce or eliminate WEC 
obligations for certain applicable facilities by lowering their 
emissions intensity.
    The WEC final rule requirements in this action are designed to meet 
Congress's directive to provide an incentive for the early adoption of 
methane emission reduction practices and technologies, including those 
that are required under the Standards of Performance for New, 
Reconstructed, and Modified Sources and Emissions Guidelines for 
Existing Sources: Oil and Natural Gas Sector Climate Review (NSPS/EG), 
which Congress expected to be promulgated pursuant to CAA section 111 
at the time it created the WEC. CAA section 136 makes this connection 
to the oil and gas methane emission standards clear by including an 
exemption from the charge for operations that are subject to and in 
compliance with final methane emissions requirements promulgated 
pursuant to CAA sections 111(b) and (d). The WEC is thus an important 
piece of a comprehensive national strategy established by Congress via 
the IRA to reduce methane emissions. The WEC advances the reduction of 
methane emissions from the oil and gas sector by providing for sources 
covered under the CAA section 111 rules a set of emissions reduction 
incentives that are in effect until full implementation of oil and gas 
methane emissions standards promulgated by the EPA on March 8, 2024. 
Those standards were, as Congress specifically acknowledged via 
explicit reference in the IRA, under development at the time the WEC 
was enacted. For methane emissions sources not covered by the CAA 
section 111 rules, the emission reduction incentives created by the WEC 
remain in place after full implementation of the CAA section 111 
methane standards.
    On January 26, 2024, the EPA proposed a regulation to facilitate 
implementation of the provisions of the WEC, following the requirements 
of CAA section 136(c)-(g) (89 FR 5318). The WEC program applies to 
applicable facilities that report more than 25,000 mt CO<INF>2</INF>e 
of greenhouse gases emitted per year pursuant to the Greenhouse Gas 
Reporting Rule's requirements for the petroleum and natural gas systems 
source category (codified as 40 CFR part 98, subpart W).\2\ An 
applicable facility, as defined in CAA section 136(d), is a facility 
within the following industry segments (as the following industry 
segments are defined in part 98, subpart W): onshore petroleum and 
natural gas production, offshore petroleum and natural gas production, 
onshore petroleum and natural gas gathering and boosting, onshore 
natural gas processing, onshore gas transmission compression, onshore 
natural gas transmission pipeline, underground natural gas storage, 
liquefied natural gas import and export equipment, and liquefied 
natural gas storage.\3\
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    \2\ 42 U.S.C. 7436(c) (``The Administrator shall impose and 
collect a charge on methane emissions that exceed an applicable 
waste emissions threshold under subsection (f) from an owner or 
operator of an applicable facility that reports more than 25,000 
metric tons of carbon dioxide equivalent of greenhouse gases emitted 
per year pursuant to of part 98 of title 40, Code of Federal 
Regulations, regardless of the reporting threshold under that 
subpart.'').
    \3\ 42 U.S.C. 7436(d).
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    CAA section 136 defines three important elements of the WEC 
program: (1) waste emissions thresholds; (2) netting of emissions 
across different facilities; and (3) exemptions for certain emissions 
and facilities. Facilities may owe a WEC obligation if their subpart W 
reported emissions exceed the waste emissions thresholds specified in 
CAA section 136(f) and they are not eligible for an exemption.\4\ The 
waste emissions threshold is a facility-specific amount of metric tons 
of methane emissions calculated using the methane intensity thresholds 
specified by Congress in CAA section 136(f)(1) through (3) and a 
facility's natural gas throughput (or oil throughput in certain 
circumstances).
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    \4\ 42 U.S.C. 7436(f)(1)-(3).
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    Congress specifically laid out certain requirements in the text of 
the statute. The waste emissions charge is specified in CAA section 
136(e) to begin for emissions occurring in 2024 at $900 per metric ton 
of methane exceeding the threshold, increasing to $1,200 per metric ton 
of methane in 2025, and to $1,500 per metric ton of methane in 2026 and 
subsequent years. The WEC only applies to the subset of a facility's 
emissions that are above the waste emissions threshold.
    Congress structured the WEC so that it focuses on high-emitting and 
inefficient oil and gas facilities (i.e., those with emissions greater 
than 25,000 mt CO<INF>2</INF>e of greenhouse gases emitted per year and 
that have a methane emissions intensity in excess of the statutory 
waste emissions threshold). Facility efficiency, reflected in the 
amount of methane emissions per unit of production or throughput, can 
directly affect a facility's WEC obligations since more efficient 
facilities have emissions below the thresholds at which facilities are 
required to pay a charge. The WEC therefore incentivizes more efficient 
operations because the charge applies only to the least efficient and 
most wasteful of oil and gas facilities (and only to the subset of 
their emissions that exceed thresholds and are not exempt). CAA section 
136(f)(4) allows facilities subject to the WEC that are under common 
ownership or control to net emissions across those facilities, which 
could result in a reduced total charge, or avoidance of the charge.\5\
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    \5\ 42 U.S.C. 7436(f)(4) (``In calculating the total emissions 
charge obligation for facilities under common ownership or control, 
the Administrator shall allow for the netting of emissions by 
reducing the total obligation to account for facility emissions 
levels that are below the applicable thresholds within and across 
all applicable segments identified in subsection (d).'').
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    In addition, Congress created three exemptions that may lower a 
facility's WEC obligation or exempt the facility entirely from the 
charge. The first exemption, found in CAA section 136(f)(5), exempts 
from the charge

[[Page 91097]]

emissions occurring at facilities in the onshore or offshore petroleum 
and natural gas production industry segments that are caused by 
eligible delays in environmental permitting of gathering or 
transmission infrastructure.\6\ The second exemption, found in CAA 
section 136(f)(6), exempts from the charge, if certain conditions are 
met, those facilities that are subject to and in compliance with final 
methane emissions requirements promulgated pursuant to CAA sections 
111(b) and (d).\7\ This exemption becomes available only if a 
determination is made by the Administrator that such final requirements 
are approved and in effect in all States with respect to the applicable 
facilities, and that the emissions reductions resulting from those 
final requirements will achieve equivalent or greater emission 
reductions as would have resulted from the EPA's methane emissions 
requirements proposed in 2021.\8\ The third exemption, found in CAA 
section 136(f)(7), exempts from the charge reporting year emissions 
from wells that are permanently shut in and plugged.\9\
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    \6\ 42 U.S.C. 7436(f)(5) (``Charges shall not be imposed 
pursuant to paragraph (1) on emissions that exceed the waste 
emissions threshold specified in such paragraph if such emissions 
are caused by unreasonable delay, as determined by the 
Administrator, in environmental permitting of gathering or 
transmission infrastructure necessary for offtake of increased 
volume as a result of methane emissions mitigation 
implementation.'').
    \7\ 42 U.S.C. 7436(f)(6) (``Charges shall not be imposed 
pursuant to subsection (c) on an applicable facility that is subject 
to and in compliance with methane emissions requirements pursuant to 
subsections (b) and (d) of section 7411 of this title upon a 
determination by the Administrator that--(i) methane emissions 
standards and plans pursuant to subsections (b) and (d) of section 
7411 of this title have been approved and are in effect in all 
States with respect to the applicable facilities; and (ii) 
compliance with the requirements described in clause (i) will result 
in equivalent or greater emissions reductions as would be achieved 
by the proposed rule of the Administrator entitled ``Standards of 
Performance for New, Reconstructed, and Modified Sources and 
Emissions Guidelines for Existing Sources: Oil and Natural Gas 
Sector Climate Review'' (86 FR 63110 (November 15, 2021)), if such 
rule had been finalized and implemented.'').
    \8\ Id.
    \9\ 42 U.S.C. 7436(f)(7) (``Charges shall not be imposed with 
respect to the emissions rate from any well that has been 
permanently shut-in and plugged in the previous year in accordance 
with all applicable closure requirements, as determined by the 
Administrator.'').
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    As a result of these key design features of the WEC, the EPA 
anticipates that many facilities in the oil and natural gas sector will 
not be subject to WEC obligations. Many oil and natural gas facilities 
already fall below the annual emissions threshold and waste emissions 
thresholds that would cause them to be subject to the WEC, or are 
likely to avail themselves of the netting provisions in this final rule 
to reduce or eliminate WEC obligations. Further, as the EPA and States 
implement the CAA section 111 2024 Final NSPS/EG for new and existing 
sources, many oil and natural gas facilities are likely to qualify for 
the regulatory compliance exemption. The CAA section 111 2024 Final 
NSPS/EG as well as the financial and technical assistance the EPA is 
administering under section 136 of the CAA, are also expected to drive 
methane emission reductions that will help applicable facilities reduce 
or eliminate their WEC obligations. The charge, then, will primarily 
serve as an incentive, particularly to high-emitting and inefficient 
facilities, to reduce their emissions of methane.
    The EPA received over 50,000 comments in response to the proposal. 
After consideration of the public comments, the EPA has made several 
changes in this final rule that are described in section I.B. and in 
sections II. and III. of this preamble. While some of these changes 
represent a meaningful shift from the proposed approach, all changes 
were within the scope of notice provided through the EPA's request for 
comment, and discussion, at proposal. Moreover, these changes result in 
a final rule that better aligns with the statutory purpose and 
structure of the WEC. Specifically, the final rule is designed to 
achieve several goals: (1) Provide a strong incentive for early action 
to reduce methane by States, companies, and facilities, as Congress 
directed; (2) appropriately implement the exemptions specified by 
Congress; (3) give additional clarity to regulated entities; and (4) 
streamline implementation. By harmonizing the WEC regulations with 
implementation of the CAA section 111 requirements, this final rule 
encourages early emissions reductions and reduces the WEC burden on 
facilities that are in compliance with applicable CAA section 111 
requirements. Furthermore, this final rule aims to increase flexibility 
so that accessing the exemptions created by Congress is not unduly 
restrictive, while still maintaining the integrity of the program. 
Finally, this rulemaking allows for expanded netting compared to the 
proposal while providing more specificity on the conditions under which 
netting may occur to minimize the potential for fraud.
    The EPA is revising the regulatory compliance exemption in response 
to the many commenters that suggested changes to better align with 
Congress' purpose to incentivize States to move promptly toward full 
implementation of the CAA section 111 program, and to motivate 
regulated facilities to achieve emissions reductions as quickly as 
possible. This Congressional intent is illustrated in the language of 
the law and in the suite of incentives for expeditious methane 
emissions reductions it creates. The principal change to the regulatory 
compliance exemption in this final rule addresses when the exemption 
becomes available. The EPA concludes that allowing the exemption to be 
available for each State once it has fully implemented the methane 
emissions requirements promulgated pursuant to CAA sections 111(b) and 
(d), rather than all at once after the last State's plans are approved, 
is both a better reading of the law and has greater fidelity to the 
Congressional purpose. Industry commenters emphasized that a State-by-
State approach would incentivize States to move quickly to develop and 
submit approvable State plans implementing the section 111 emissions 
guidelines, furthering Congress's intent in enacting the compliance 
exemption. Making the compliance exemption available to facilities in a 
State as soon as all CAA section 111(b) and (d) facilities within that 
State are subject to all of their applicable methane emissions 
requirements will provide an incentive for every State to move 
expeditiously, and avoid delays in effectuating the compliance 
exemption that might occur if the slowest State sets the pace. At the 
same time, to fully implement Congress' intention that the WEC serve as 
a mechanism for incentivizing emissions reductions until sources begin 
to comply with all of their emissions control obligations, the final 
rule provides that the regulatory compliance exemption becomes 
available in each State only after sources are required to comply with 
all of their State plan requirements. As described in more detail in 
section II.D.2. of this preamble, these changes ensure the regulatory 
compliance exemption reflects the facts on the ground for facilities 
operating in each State, while tying the exemption to the date actual 
emissions reductions are achieved as Congress intended.
    In response to the information provided in comments, the EPA is 
also finalizing other changes to the regulatory compliance exemption 
that help ensure the WEC and the CAA section 111 rules work together as 
intended. As noted by commenters, it is important that the WEC 
incentivize early action before compliance deadlines and then relieve 
from the charge those facilities operating in compliance with the CAA 
section 111 rules. In this final rule, as many

[[Page 91098]]

commenters suggested, the EPA is limiting the types of noncompliance 
that would cause a facility to lose the regulatory compliance 
exemption, reducing the timeframe for which the exemption would be lost 
in the event of noncompliance, and narrowing the scope of emissions 
that would lose the exemption in the event of noncompliance for 
facilities in segments with unique, basin-wide facility definitions. 
The final rule will thereby create a stronger incentive for facilities 
to meet the requirements of the CAA section 111 rules while making the 
regulatory compliance exemption more accessible.
    To reflect comments persuasively suggesting that a more expansive 
approach to netting would reflect a better reading of the legislative 
text, the final rule changes the approach from the proposal to apply 
netting to encompass facilities under common ownership or control at 
the parent company level. One of the key provisions of the WEC created 
in CAA section 136(f) relates to the ability of facilities under common 
ownership or control to net emissions, such that facilities with 
emissions below the waste emissions threshold can offset emissions from 
facilities above the threshold to reduce the overall WEC burden. The 
EPA proposed that a facility's owner or operator would be the regulated 
entity under WEC as well as the entity used for netting of emissions 
across facilities under common ownership or control. As commenters 
highlighted, the text of section 136(f) suggests Congress supported 
broad application of netting, and commenters also noted that broader 
application of netting may help incentivize emission reductions by 
allowing companies to take advantage of cost-effective reduction 
opportunities across their entire operations rather than being limited 
by reductions that can be achieved across a smaller number of 
facilities. The EPA received significant comments that restricting the 
netting provisions to the owner or operator was inconsistent with the 
intent of the provision, since parent companies both own and control 
subsidiaries. As described in more detail in section II.B.1., the final 
regulations continue to define a facility's owner or operator as the 
regulated entity under WEC (i.e., responsible for the payment of the 
WEC), consistent with CAA section 136(c). However, these final 
regulations reflect that the best reading of the statute entails a 
broader interpretation of the term ``common ownership or control,'' and 
so the final rule expands the use of netting to the parent company 
level by allowing owners and operators with a common parent to transfer 
negative emissions amongst each other. This approach of maintaining the 
WEC regulatory obligations at the owner and operator level, while 
allowing the transfer of negative emissions or ``netting'' across 
owners and operators with a common parent, reconciles the difference in 
statutory language in CAA sections 136(c) and 136(f).
    The EPA is also making a number of changes to improve the 
implementation of the WEC in response to logistical and feasibility 
concerns raised in response to the proposal. For example, the EPA is 
specifying WEC filing and resubmittal deadlines of August 31 and 
December 15, respectively. These dates are later than the proposed 
deadlines, thereby allowing for more accurate reporting prior to WEC 
submission, reducing the number of resubmissions and corrections, and 
reducing overall burden.
    In this final rule, the EPA is also making modifications to the 
implementation of the unreasonable delay and plugged well exemptions, 
as well as revisions to definitions and calculations to support the 
finalized rule. We are also finalizing revisions to 40 CFR part 98, 
subpart A (general provisions) for all facilities that report under 
subpart W to harmonize reporting responsibilities in part 98 with the 
reporting responsibilities and WEC obligation in part 99 such that 
responsibility to report and resubmit reports under part 98 if errors 
are identified in the part 98 report align with the obligated party 
under part 99. The final provisions of part 99 and part 98 under this 
rulemaking are described in further detail in sections II. and III. of 
this preamble.

C. Background and Related Actions

    Congress designed the WEC to work in tandem with several related 
EPA programs. Together, these actions are expected to greatly reduce 
methane emissions. This section discusses the impacts of methane on 
public health and welfare and provides more details on the EPA programs 
relevant to methane emissions from oil and gas systems.
1. How does methane affect public health and welfare?
    Elevated concentrations of greenhouse gases (GHGs) including 
methane have been warming the planet, leading to harmful changes in the 
Earth's climate that are occurring at a pace and in a way that 
threatens human health, our economy and infrastructure, and the natural 
environment, both in the United States (U.S.) and at a global level. 
While the EPA is not statutorily required to make any particular 
scientific or factual findings regarding the impact of GHG emissions on 
public health and welfare in support of the WEC, the EPA is providing 
in this section a brief scientific background on methane and climate 
change to offer additional context for this rulemaking and to help the 
public understand the environmental impacts of GHGs such as 
methane.\10\
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    \10\ The EPA did not and is not reopening previous 
determinations regarding endangerments to public health and welfare 
in providing this background in this rulemaking.
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    As a GHG, methane in the atmosphere absorbs terrestrial infrared 
radiation, which in turn contributes to increased global warming and 
continuing climate change, including increases in air and ocean 
temperatures, changes in precipitation patterns, retreating snow and 
ice, increasingly severe weather events, such as hurricanes of greater 
intensity, and sea level rise, among other impacts. Methane also 
contributes to climate change through chemical reactions in the 
atmosphere that produce tropospheric ozone and stratospheric water 
vapor. In 2023, atmospheric concentrations of methane increased by 
nearly 11 parts per billion (ppb) over 2022 levels to reach 1922 
ppb.\11\ Concentrations are now more than two and a half times larger 
than the preindustrial level of 729 ppb.\12\ Methane is responsible for 
about one third of all warming resulting from human emissions of well-
mixed GHGs,\13\ and due to its high radiative efficiency compared to 
carbon dioxide, methane mitigation is one of the best opportunities for 
reducing near-term warming. In the U.S., the oil and gas sector is the 
largest source of industrial methane emissions.\14\
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    \11\ NOAA, <a href="https://gml.noaa.gov/webdata/ccgg/trends/ch4/ch4_annmean_gl.txt">https://gml.noaa.gov/webdata/ccgg/trends/ch4/ch4_annmean_gl.txt</a>. Accessed 8/22/24.
    \12\ Blunden, J. and T. Boyer, Eds., 2022: ``State of the 
Climate in 2021.'' Bull. Amer. Meteor. Soc., 103 (8), Si-S465, 
<a href="https://doi.org/10.1175/2022BAMSStateoftheClimate.1">https://doi.org/10.1175/2022BAMSStateoftheClimate.1</a>, 103 (8), Si-
S465, <a href="https://doi.org/10.1175/2022BAMSStateoftheClimate.1">https://doi.org/10.1175/2022BAMSStateoftheClimate.1</a>.
    \13\ IPCC, 2021: Summary for Policymakers. In: Climate Change 
2021: The Physical Science Basis. Contribution of Working Group I to 
the Sixth Assessment Report of the Intergovernmental Panel on 
Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. 
Connors, C. P[eacute]an, S. Berger, N. Caud, Y. Chen, L. Goldfarb, 
M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. 
Maycock, T. Waterfield, O. Yelek[ccedil]i, R. Yu, and B. Zhou 
(eds.)]. Cambridge University Press, Cambridge, United Kingdom and 
New York, NY, USA, pp. 3-32, doi:10.1017/9781009157896.001.
    \14\ EPA (2024). Inventory of U.S. Greenhouse Gas Emissions and 
Sinks: 1990-2022 U.S. Environmental Protection Agency, EPA 430R-
24004. <a href="https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-and-sinks-1990-2022">https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-and-sinks-1990-2022</a>.

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[[Page 91099]]

    Major scientific assessments continue to be released that further 
advance our understanding of the climate system and the impacts that 
methane and other GHGs have on public health and welfare both for 
current and future generations. According to the Intergovernmental 
Panel on Climate Change (IPCC) Sixth Assessment Report, ``it is 
unequivocal that human influence has warmed the atmosphere, ocean and 
land. Widespread and rapid changes in the atmosphere, ocean, cryosphere 
and biosphere have occurred.'' \15\ Recent EPA modeling efforts \16\ 
have also shown that impacts from these changes are projected to vary 
regionally within the U.S. For example, large damages are projected 
from sea level rise in the Southeast, wildfire smoke in the Western 
U.S., and impacts to agricultural crops and rail and road 
infrastructure in the Midwest and Northern Plains. Scientific 
assessments, the EPA analyses, and updated observations and projections 
document the rapid rate of current and future climate change and the 
potential range impacts both globally and in the United States,\17\ 
presenting clear support regarding the current and future dangers of 
climate change and the importance of GHG emissions mitigation. The 
Methane Emissions Reduction Program is intended to respond to and 
mitigate these impacts by improving availability of and access to 
monitoring and emission reduction technologies and incentivizing 
methane emissions reductions from oil and gas systems.
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    \15\ Id.
    \16\ (1) EPA. 2024. Technical Documentation on the Framework for 
Evaluating Damages and Impacts (FrEDI). U.S. Environmental 
Protection Agency, EPA 430-R-24-001.
    (2) Hartin C., E.E. McDuffie, K. Novia, M. Sarofim, B. Parthum, 
J. Martinich, S. Barr, J. Neumann, J. Willwerth, & A. Fawcett. 
Advancing the estimation of future climate impacts within the United 
States. EGUsphere doi: 10.5194/egusphere-2023-114, 2023.
    \17\ (1) USGCRP, 2023: Fifth National Climate Assessment. 
Crimmins, A.R., C.W. Avery, D.R. Easterling, K.E. Kunkel, B.C. 
Stewart, and T.K. Maycock, Eds. U.S. Global Change Research Program, 
Washington, DC, USA. <a href="https://doi.org/10.7930/NCA5.2023">https://doi.org/10.7930/NCA5.2023</a>.
    (2) IPCC, 2021: Summary for Policymakers. In: Climate Change 
2021: The Physical Science Basis. Contribution of Working Group I to 
the Sixth Assessment Report of the Intergovernmental Panel on 
Climate Change [Masson-Delmotte, V., P. Zhai, A. Pirani, S.L. 
Connors, C. Pe[acute]an, S. Berger, N. Caud, Y. Chen, L. Goldfarb, 
M.I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J.B.R. Matthews, T.K. 
Maycock, T. Waterfield, O. Yelek[ccedil]i, R. Yu and B. Zhou 
(eds.)]. Cambridge University Press.
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2. Related Actions
    Congress designed the WEC to work in tandem with several related 
EPA programs, in particular the Greenhouse Gas Reporting Program and 
the CAA section 111 requirements. As mandated by CAA section 136(c) and 
(d), the scope and effect of the WEC is closely related to the EPA's 
long-standing Greenhouse Gas Reporting Program requirements for oil and 
natural gas facilities, which are codified in subpart W of the EPA's 
GHGRP regulations. Specifically, the applicability of the WEC is based 
upon the quantity of metric tons of CO<INF>2</INF>e emitted per year 
pursuant to the requirements of subpart W. Further, CAA section 136(e) 
requires that the WEC amount be calculated based upon methane emissions 
reported pursuant to subpart W. In order to ensure that WEC charges are 
based on methane emissions data that is as accurate and comprehensive 
as possible, section 136(h) further required the EPA to undertake a 
rulemaking to review and revise subpart W as necessary to ensure that 
reporting is ``based on empirical data,'' ``accurately reflect[s] the 
total methane emissions and waste emissions from applicable 
facilities,'' and ``allow[s] owners and operators of applicable 
facilities to submit empirical emissions data.'' As a result, this 
final action builds upon previous subpart W rulemakings.
    In the 2024 Subpart W Final Rule, the EPA finalized revisions to 
subpart W consistent with the authority and directives set forth in CAA 
section 136(h) as well as the EPA's authority under CAA section 114. In 
that rulemaking, the EPA finalized revisions to require reporting of 
additional emissions or emissions sources to address potential gaps in 
the total methane emissions reported by facilities to subpart W. For 
example, these revisions added a new emissions source, referred to as 
``other large release events,'' to capture large emission events that 
are not accurately accounted for using the existing methods in subpart 
W.\18\ See section II.B. of the preamble to the 2024 Subpart W Final 
Rule (89 FR 42062) for more information on this source category. The 
emissions from these events and other newly added sources are required 
to be included in the total emissions reported under subpart W starting 
with reporting year 2025. The EPA also finalized revisions to add or 
revise existing calculation methodologies to improve the accuracy of 
reported emissions, incorporate additional empirical data, and allow 
owners and operators of applicable facilities to submit empirical 
emissions data that could appropriately demonstrate the extent to which 
a charge is owed in implementation of CAA section 136, as directed by 
CAA section 136(h). The EPA also finalized revisions to existing 
reporting requirements to collect data that will improve verification 
of reported data, ensure accurate reporting of emissions, and improve 
the transparency of reported data. For clarity of discussion within 
this preamble, unless otherwise stated, references to provisions of 
subpart W (i.e., 40 CFR 98.230 through 98.238) reflect the language of 
that subpart as effective January 1, 2025.
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    \18\ As defined at 40 CFR 98.238, effective January 1, 2025, an 
other large release event means any planned or unplanned 
uncontrolled release to the atmosphere of gas, liquids, or mixture 
thereof, from wells and/or other equipment that result in emissions 
for which there are no methodologies in 40 CFR 98.233 other than 
under 40 CFR 98.233(y) to appropriately estimate these emissions. 
Other large release events include, but are not limited to, well 
blowouts, well releases, pressure relief valve releases from process 
equipment other than hydrocarbon liquids storage tanks, storage tank 
cleaning and other maintenance activities, and releases that occur 
as a result of an accident, equipment rupture, fire, or explosion. 
Other large release events also include failure of equipment or 
equipment components such that a single equipment leak or release 
has emissions that exceed the emissions calculated for that source 
using applicable methods in 40 CFR 98.233(a) through (h), (j) 
through (s), (w), (x), (dd), or (ee) by the threshold in 40 CFR 
98.233(y)(1)(ii). Other large release events do not include 
blowdowns for which emissions are calculated according to the 
provisions in 40 CFR 98.233(i).
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    Under the Greenhouse Gas Reporting Program, the EPA also finalized 
a separate rule (89 FR 31802, April 25, 2024), which included updates 
to the General Provisions of the Greenhouse Gas Reporting Rule to 
reflect revised global warming potentials (GWPs), reporting of GHG data 
from additional sectors (i.e., non-subpart W sectors), and revisions to 
source categories other than subpart W that improve implementation of 
the Greenhouse Gas Reporting Rule. The revision to the GWP of methane 
(from 25 to 28) is expected to lead to a small increase in the number 
of facilities (<188 facilities) \19\ that exceed the subpart W 25,000 
mt CO<INF>2</INF>e threshold and thus become subject to the part 99 
requirements. This final Greenhouse Gas Reporting Program rule is not 
expected to otherwise impact subpart W reporting requirements as they 
pertain to the applicability or implementation of the part 99 
requirements.
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    \19\ In the 2024 Final GHGRP Rule, the EPA estimated that 188 
additional facilities would be subject to subpart W due to the 
increase in GWP. However, many of these facilities would also report 
under other subparts, such as subpart C, and for some of these 
facilities, reported emissions to subpart W will be below the WEC 
applicable threshold of 25,000 metric tons CO<INF>2</INF>e.
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    Separately, on November 15, 2021 (86 FR 63110), the EPA proposed 
under CAA section 111(b) standards of performance regulating GHGs (in 
the

[[Page 91100]]

form of limitations on emissions of methane) and volatile organic 
compounds (VOCs) for certain new, reconstructed, and modified sources 
in the oil and natural gas source category (proposed as 40 CFR part 60, 
subpart OOOOb) (hereafter referred to as ``NSPS OOOOb''), as well as 
emissions guidelines regulating emissions of methane under CAA section 
111(d) for certain existing oil and natural gas sources (proposed as 40 
CFR part 60, subpart OOOOc) (hereafter referred to as ``EG OOOOc''). 
The November 15, 2021 proposal (covering both NSPS OOOOb and EG 
OOOOc)--which Congress explicitly referred to in section 136(f)(6)--
will be referred to hereafter as the ``2021 NSPS/EG Proposal.'' The 
2021 NSPS/EG Proposal sought to strengthen standards of performance 
previously in effect under section 111(b) of the CAA for new, modified 
and reconstructed oil and natural gas sources, and to establish 
emissions guidelines under section 111(d) of the CAA for States to 
follow in developing plans to establish standards of performance for 
existing oil and natural gas sources.
    On December 6, 2022, the EPA issued a supplemental proposal to 
update, strengthen, and expand upon the 2021 NSPS/EG Proposal (87 FR 
74702). This supplemental proposal modified certain standards proposed 
in the 2021 NSPS/EG Proposal and added proposed requirements for 
sources not previously covered.\20\ Among other things, the 
supplemental proposal sought to encourage the deployment of innovative 
and advanced monitoring technologies by establishing more flexible 
performance requirements than the 2021 NSPS/EG Proposal, and also 
included provisions to establish a process for certified expert 
monitoring to identify ``super-emitters'' for prompt mitigation.
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    \20\ Examples of some of the changes the 2022 Supplemental 
proposed included proposed requirements that all well sites are 
monitored for leaks, requirements to ensure the proper operation of 
flares, zero-emission requirement for process controllers and pumps, 
standards for dry seal centrifugal compressors, and a super-emitter 
response program, among other things.
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    On March 8, 2024, the final NSPS OOOOb and EG OOOOc rules 
(hereafter referred to as the ``2024 Final NSPS/EG'') were published in 
the Federal Register (89 FR 16820). First, the EPA finalized NSPS OOOOb 
regulating methane and VOCs emissions from new, modified, and 
reconstructed sources in the Crude Oil and Natural Gas source category 
pursuant to CAA section 111(b)(1)(B). Second, the EPA finalized 
emission guidelines, including presumptive standards in EG OOOOc that 
would limit methane emissions from existing sources in the Crude Oil 
and Natural Gas source category, as well as requirements under the CAA 
section 111(d) for States to follow in developing, submitting, and 
implementing State plans to establish performance standards.\21\ Among 
other things, the final rule strengthens standards, phases out routine 
flaring of natural gas from new oil wells, requires all well sites and 
compressor stations to be routinely monitored for leaks, requires 
storage vessels to reduce emissions by 95 percent, sets standards for 
certain facilities that have not been previously regulated, and 
provides companies greater flexibility to use innovative and cost-
effective methane detection technologies. It will also utilize data 
collected by certified third parties to identify and address ``super 
emitting'' sources and eliminate or minimize emissions from common 
pieces of equipment used in oil and gas operations such as process 
controllers, pumps, and storage tanks.
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    \21\ In this action, the EPA also finalized several related 
actions stemming from the joint resolution of Congress, adopted on 
June 30, 2021, under the CRA, disapproving the 2020 Policy Rule, and 
also finalized a protocol under the general provisions for use of 
Optical Gas Imaging.
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    Congress envisioned a strong connection between EPA programs for 
methane emissions from oil and gas systems. The 2024 Final NSPS/EG is 
relevant to this WEC final rule in two ways: first, implementation of 
the CAA section 111(b) and (d) standards will help drive methane 
emissions reductions that can help many facilities achieve methane 
emission levels that are below the thresholds specified by Congress 
(described in section II.B. of this preamble), thereby enabling 
applicable facilities to reduce or avoid charges under the WEC program; 
and second, compliance with the CAA section 111(b) and (d) standards 
may (if certain criteria are met) exempt facilities from the WEC under 
the regulatory compliance exemption outlined at CAA section 136(f)(6) 
(discussed in section II.D.2. of this preamble). The WEC thus serves as 
an important bridge and backstop to the full implementation of the 2024 
Final NSPS/EG, and an additional incentive thereafter to continue to 
comply with the CAA section 111 rules.
    In addition to creating the WEC and directing the EPA to revise 
subpart W, Congress also established the MERP under section 136 of the 
CAA to provide financial and technical assistance to reduce methane 
emissions from the oil and gas sector. To implement this program, the 
EPA is partnering with the U.S. Department of Energy (DOE) to provide 
up to $1.36 billion in financial and technical assistance. On December 
15, 2023, the EPA and the DOE announced the award of $350 million in 
formula grant funding to 14 States help measure and reduce methane 
emissions, supporting industry efforts to cut methane emissions from 
low-producing, marginal conventional wells on non-Federal lands and 
support environmental restoration of well sites. On June 21, 2024, the 
EPA and the DOE announced the availability of $850 million in federal 
funding to help measure and reduce methane emissions from the oil and 
gas sectors. This competitive solicitation will enable a broad range of 
eligible U.S. entities to apply, including industry, academia, non-
governmental organizations, Tribes, State and local government, and 
others. As designed by Congress, these resources and incentives were 
intended to complement the regulatory programs and to help facilitate 
the transition to a more efficient petroleum and natural gas industry.

D. Legal Authority

    In August 2022, the IRA was signed into law. Section 60113 of the 
IRA amended the CAA by adding section 136, and the EPA is finalizing 
this rulemaking under the authority provided by that section. As noted 
in section I.B. of this preamble, the IRA added CAA section 136, 
``Methane Emissions and Waste Reduction Incentive Program for Petroleum 
and Natural Gas Systems,'' which requires that the EPA impose and 
collect an annual specified charge on methane emissions that exceed an 
applicable waste emissions threshold from an owner or operator of an 
applicable facility that reports more than 25,000 mt CO<INF>2</INF>e of 
greenhouse gases emitted per year pursuant to subpart W of the GHGRP. 
Under CAA section 136, an ``applicable facility'' is a facility within 
nine of the ten industry segments subject to subpart W, as currently 
defined in 40 CFR 98.230 (excluding natural gas distribution).
    The EPA is also finalizing elements of this rulemaking under its 
authority provided in CAA section 114. CAA section 114(a)(1) authorizes 
the Administrator to require emissions sources, persons subject to the 
CAA, or persons whom the Administrator believes may have necessary 
information to monitor and report emissions and provide other 
information the Administrator requests for the purposes of carrying out 
any provision of the CAA (except for a provision of title II with 
respect to

[[Page 91101]]

manufacturers of new motor vehicles or new motor vehicle engines). 
Thus, CAA section 114(a)(1) additionally provides the EPA authority to 
require the information in this final rule because the information is 
relevant for carrying out CAA section 136.
    The Administrator has determined that this action is subject to the 
provisions of section 307(d) of the CAA. Section 307(d) contains a set 
of procedures relating to the issuance and review of certain CAA rules.
    In addition, pursuant to sections 114, 301, and 307 of the CAA, the 
EPA is publishing final confidentiality determinations for the new data 
elements required by this final regulation.

II. Procedures for Facilitating Compliance, Including Netting and 
Exemptions

A. Final Definitions To Support WEC Implementation and Associated 
Revisions to Part 98, Subpart A

    In accordance with CAA section 136(d), applicable facilities under 
part 99 are those facilities within certain industry segments as 
defined under part 98, subpart W. To support implementation of the WEC, 
we are finalizing several definitions within the general provisions of 
40 CFR 99.2 which follow from the statutory text.
1. Applicable Facility and WEC Applicable Facility Definitions
    The EPA received comments expressing support for the proposed 
definitions for ``applicable facility'' and ``WEC applicable 
facility.'' Certain commenters disagreed that the statutory text 
requires alignment of the definition of an ``applicable facility'' in 
the proposed WEC rule with the subpart W facility definitions, and 
stated that CAA section 136(d) leaves room for interpretation as to the 
definition of an ``applicable facility.'' After consideration of 
comments received, the EPA is finalizing as proposed a definition of 
``applicable facility'' as specified by the statute to mean a facility 
within one or more of the following industry segments: onshore 
petroleum and natural gas production, offshore petroleum and natural 
gas production, onshore petroleum and natural gas gathering and 
boosting, onshore natural gas processing, onshore natural gas 
transmission compression, onshore natural gas transmission pipeline, 
underground natural gas storage, Liquified Natural Gas (LNG) import and 
export equipment, or LNG storage, as those industry segments are 
defined in 40 CFR 98.230 of subpart W.\22\ The EPA does not agree with 
the commenters that the statute leaves open for interpretation the 
meaning of ``applicable facility;'' rather, the agency concludes that 
the statute expressly defines ``applicable facility'' in the same 
manner as the term ``facility'' has long been defined under 40 CFR part 
98 and applied to the nine industry segments listed in CAA section 
136(d). In addition to reflecting the plain language of the statutory 
text, aligning the definition of an applicable facility with the 
definitions of a facility within the industry segments in subpart W, 
for each corresponding industry segment, simplifies implementation and 
reduces burden on industry and the EPA. The approach supported by some 
commenters would have established different definitions of ``facility'' 
for subpart W and WEC, requiring the EPA to establish new reporting 
requirements for certain industry segments and requiring industry to 
calculate and report emissions for the same equipment twice. The EPA 
also received comments requesting that we clearly state that oil and 
gas producers generating less than 25,000 tons of CO<INF>2</INF> 
equivalent are not required to submit documentation to the regulatory 
body proving that the emissions threshold was not exceeded. After 
consideration of comments, the EPA is finalizing with clarifying 
revisions a definition of ``WEC applicable facility'' in 40 CFR 99.2, 
which means an applicable facility, as defined in this section, for 
which the owner(s) or operator(s) of a part 98 reporting facility was 
required to report GHG emissions under part 98, subpart W of this 
chapter of more than 25,000 metric tons CO<INF>2</INF>e for the 
reporting year. This final definition clarifies that the obligation for 
reporting under part 98 may apply to multiple owners or operators for a 
facility, that the status as a WEC applicable facility is based upon 
reporting in compliance with part 98, and that whether or not a part 98 
reporting facility is a WEC applicable facility is based upon a 
specific reporting year. This definition is taken from the threshold 
set in the statute. Only WEC applicable facilities are required to 
report under part 99.
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    \22\ See 42 U.S.C. 7436(d).
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    A single reporting facility under part 98, subpart W, typically 
consists of operations within a single petroleum and natural gas 
industry segment. However, a single reporting facility may represent 
operations in two or more industry segments. Facilities that may 
potentially have operations representing multiple industry segments and 
would report as the same facility if co-located include facilities that 
have co-located operations in the onshore natural gas processing, 
onshore natural gas transmission compression, underground natural gas 
storage, LNG import and export equipment, and LNG storage industry 
segments. We are finalizing as proposed that such operations would be 
considered a single WEC applicable facility under part 99.
    In cases where a subpart W facility reports under two or more of 
the industry segments listed in the previous paragraph, the EPA is 
finalizing as proposed that the 25,000 mt CO<INF>2</INF>e threshold is 
evaluated based on the total facility GHG emissions reported to subpart 
W across all the relevant industry segments (i.e., the facility's total 
subpart W GHGs). As discussed in section II.C.1. of this preamble, the 
waste emissions threshold is the facility-specific quantity of annual 
emissions, based upon the relevant intensity thresholds specified by 
Congress, above which the EPA must impose and collect the WEC. For the 
purposes of determining the waste emissions threshold for a WEC 
applicable facility that operates within multiple industry segments, 
the EPA is finalizing as proposed that each industry segment is 
assessed separately (i.e., using industry segment-specific throughput 
and methane intensity threshold) and then summed together to determine 
the waste emissions threshold for the facility. The EPA is finalizing 
as proposed that this approach is used in all cases where a WEC 
applicable facility contains equipment in multiple subpart W industry 
segments.
    The EPA considered an alternative definition of WEC applicable 
facility as it applies to subpart W facilities that report under two or 
more industry segments. This alternative approach would have assessed 
these facilities against the 25,000 mt CO<INF>2</INF>e applicability 
threshold using the CO<INF>2</INF>e reported under subpart W for each 
individual segment at the facility rather than the total facility 
subpart W CO<INF>2</INF>e reported across all segments. CAA section 
136(d) defines an applicable facility as ``a facility within the [nine] 
industry segments'' subject to the WEC and does not specify that an 
applicable facility is in one and only one industry segment. The EPA 
understands this to mean that an applicable facility constitutes an 
entire subpart W facility, including those that report under more than 
one segment. Thus, based on the statutory text, the EPA is finalizing 
as proposed to assess WEC applicability based on the entire subpart W 
facility's emissions that are reported under subpart W.

[[Page 91102]]

Based on subpart W data for the 2022 reporting year, no more than two 
dozen facilities report data for multiple segments, and when total 
subpart W CO<INF>2</INF>e is summed across all segments at these 
facilities, almost all of these facilities remain below the 25,000 mt 
CO<INF>2</INF>e threshold. Historic data also show that the industry 
segments (onshore natural gas processing, onshore natural gas 
transmission compression, and underground natural gas storage) located 
at these facilities that report data for multiple segments generally 
have methane emissions below the waste emissions thresholds. The final 
approach of using total subpart W facility CO<INF>2</INF>e for 
determining WEC applicability therefore should not result in a 
significant number of facilities being subject to the WEC compared to 
an approach that assessed applicability using subpart W CO<INF>2</INF>e 
for each individual industry segment at a facility. Based on historic 
data, the EPA does not expect the very small number of facilities with 
operations in multiple subpart W segments that could be subject to the 
WEC under the final approach to experience a substantially different 
financial impact than they would have under this alternative approach.
2. Facility Applicable Emissions, WEC Applicable Emissions, Net WEC 
Emissions, and Net WEC Emissions After Transfers Definitions
    We are finalizing as proposed a definition for ``facility 
applicable emissions'' in 40 CFR 99.2 which means the annual methane 
emissions from a WEC applicable facility that are either equal to, 
below, or exceeding the waste emissions threshold for the facility 
prior to consideration of any applicable exemptions. We are also 
finalizing as proposed a definition for ``WEC applicable emissions'' in 
40 CFR 99.2, which means the annual methane emissions from a WEC 
applicable facility after consideration of any applicable exemptions. 
The calculation methodology for WEC applicable emissions is addressed 
in section II.C.3. of this preamble.
    The EPA is also finalizing definitions of ``net WEC emissions'' and 
``net WEC emissions after transfers'' to clarify the total amount of 
methane that is subject to charge and to account for revisions from the 
proposal to netting requirements. The EPA is finalizing a definition of 
``net WEC emissions'' in 40 CFR 99.2 to mean the sum of WEC applicable 
emissions from facilities with the same WEC obligated party, as 
calculated pursuant to 40 CFR 99.22 using equation B-8. If a WEC 
obligated party only has one WEC applicable facility, net WEC emissions 
are equal to that facility's WEC applicable emissions. The EPA is 
finalizing a definition of ``net WEC emissions after transfers'' to 
mean the total quantity of methane emissions subject to charge for a 
WEC obligated party. If the WEC obligated party is not eligible to, or 
elects not to, transfer or receive negative net WEC emissions pursuant 
to 40 CFR 99.23, the net WEC emissions after transfers are determined 
pursuant to 40 CFR 99.22 and are equal to net WEC emissions. If the WEC 
obligated party transfers or receives negative net WEC emissions 
pursuant to 40 CFR 99.23, the net WEC emissions after transfers reflect 
such transfers subject to the requirements of 40 CFR 99.23. If a WEC 
obligated party does not participate in any transfer of net WEC 
emissions with other WEC obligated parties with a common parent 
company, that WEC obligated party's net WEC emissions after transfers 
are equal to its net WEC emissions.
3. WEC Obligated Party Definition
    We are finalizing the definitions of ``WEC obligated party'' and 
``WEC applicable facility''. The EPA received comment requesting that 
we recognize the differences between ownership and operatorship as well 
as the complexity of ownership and operator agreements, including 
acknowledging the dynamics of these across basins, facilities, and 
individual wells. After consideration of the comments received, and in 
addition to finalizing the definition for WEC applicable facility 
discussed earlier in this section, we are finalizing with revision a 
definition for the term ``WEC obligated party'' in 40 CFR 99.2. As 
finalized, the term WEC obligated party refers to the owner or operator 
of one or more WEC applicable facilities. The WEC obligated party of a 
WEC applicable facility must be one of the owners or operators of that 
facility under subpart W, as reported under 40 CFR 98.3(c)(14). We note 
that although there are differences in the common definitions of 
ownership and operatorship and there may be complex agreements between 
owners and operators, for the purposes of subpart W, there are specific 
definitions for owner(s) and operators(s) in subpart A and subpart W of 
part 98, with some segments, such as onshore natural gas production, 
having unique definitions.\23\ We are finalizing the term ``WEC 
obligated Party'' to be consistent with these definitions. For WEC 
applicable facilities that have more than one owner or operator, we are 
finalizing that the WEC obligated party is an owner or operator 
selected by a binding agreement among the owners and operators of the 
WEC applicable facility. The EPA anticipates that such an agreement 
would be similar to those used in carrying out 40 CFR 98.4(b) under the 
GHGRP. We are finalizing as proposed that the WEC obligated party must 
be one of the owners or operators of the WEC applicable facility as of 
December 31 of the reporting year, with one exception. This exception 
is related to the circumstances in which a WEC applicable facility is 
involved in a transaction(s) subsequent to the end of the reporting 
year (i.e., between January 1 and December 31 of the year following the 
reporting year) that results in all of the owners or operators (of the 
facility as of December 31 of the reporting year) ceasing to exist 
prior to the WEC filing date. In this case, the WEC obligated party 
would be one of the owner(s) or operator(s) that acquired the facility 
as a result of the transaction(s) to be selected by mutual agreement 
among all of the acquiring owner(s) or operator(s). This revision is 
necessary to avoid cases in which there is no eligible owner or 
operator to serve as the WEC obligated party. We note that in case of 
transactions where only one owner or operator ceases to exist and that 
entity was the WEC obligated party, the remaining owners or operators 
of the WEC applicable facility that were the owners or operators as of 
December 31 of the reporting year would need to select a new WEC 
obligated party. Additionally, we have finalized clarifying language in 
the definition of WEC obligated party to make clear that each WEC 
applicable facility must have only one WEC obligated party for a 
reporting year. This requirement was included in the proposed rule 
under proposed 40 CFR 99.4, but we are further clarifying by making it 
explicit in the definition of WEC obligated party. The EPA notes that 
WEC obligated parties may only net for the applicable

[[Page 91103]]

reporting year for which they are reporting; in other words, emissions 
occurring before December 31 should not be netted with emissions 
occurring after December 31.
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    \23\ For example, 40 CFR 98.238 defines Facility with respect to 
onshore petroleum and natural gas production for purposes of 
reporting under this subpart and for the corresponding subpart A 
requirements as all petroleum or natural gas equipment on a single 
well-pad or associated with a single well-pad and CO<INF>2</INF> EOR 
operations that are under common ownership or common control 
including leased, rented, or contracted activities by an onshore 
petroleum and natural gas production owner or operator and that are 
located in a single hydrocarbon basin as defined in 40 CFR 98.238. 
Where a person or entity owns or operates more than one well in a 
basin, then all onshore petroleum and natural gas production 
equipment associated with all wells that the person or entity owns 
or operates in the basin would be considered one facility.
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    In addition to establishing the entity regulated under the WEC, the 
EPA is finalizing the temporal bounds for which a WEC obligated party 
is responsible for its facilities and their associated emissions, as 
well as establishing obligations for transacted assets. For the 
purposes of submitting the WEC filing, we are finalizing that the WEC 
obligated party's (including through binding agreement) WEC applicable 
facilities are the WEC applicable facilities for which it is the owner 
or operator, as of December 31 of each reporting year. Under the final 
rule, the WEC obligated party is responsible for any WEC applicable 
emissions from facilities for which it was the facility owner or 
operator as of December 31 of the corresponding reporting year. The EPA 
recognizes that facilities may be acquired or divested at any time in a 
given reporting year, and that under the final rule the year-end WEC 
obligated party, or the WEC obligated party selected by mutual 
agreement among all of the acquiring owner(s) or operator(s) if the 
existing WEC obligated party ceases to exist, would be responsible for 
data and any corresponding WEC obligation for the entire reporting 
year. The EPA believes that this approach is both reasonable and 
necessary for implementation of the WEC program. Subpart W data 
reporting uses the same approach for circumstances where facilities are 
acquired or divested during a given reporting year; the facility owner 
or operator as of December 31 is responsible for reporting emissions 
for the entire year. Because the subpart W data is inextricably linked 
to the WEC filing, the EPA assessed that it would complicate and 
potentially be inappropriate to have different parties be liable for 
the legal obligations of the same facility under each regulation. 
Specifically, different entities being legally liable for the same 
facility under subpart W and the WEC program could lead to challenges 
for WEC filings and associated data verification, increase industry 
burden by requiring significant coordination between different 
companies, and lead to situations where separate entities are 
responsible for reporting subpart W data and paying any charge 
calculated from that data. The EPA therefore believes it would be 
neither practical nor accurate for the reporting responsibility and 
potential WEC obligation for a single facility to be split among 
multiple WEC obligated parties in such circumstances.
    The EPA also recognizes that a facility's owner or operator may 
change between December 31 of a given reporting year and August 31 of 
the following year, when WEC filings are due, or later in the year and 
prior to when corrections may occur. In such situations, under the 
final rule the WEC obligated party associated with a facility as of 
December 31 of a given reporting year is responsible for accounting for 
that facility in its WEC filing and is responsible for any WEC 
obligation associated with that facility for that reporting year. The 
new owner or operator after the transaction would only become the new 
WEC obligated party starting with the year of purchase, assuming they 
are still the owner or operator as of December 31 of the year of the 
transaction. The EPA received several comments related to the acquiring 
of a WEC obligated party by another WEC obligated party prior to the 
WEC filing such that the WEC obligated party as of December 31 for the 
applicable reporting year ceases to exist. One commenter stated that 
the proposal was ambiguous as to whether companies that purchase WEC 
applicable facilities (and thus would become WEC obligated parties, as 
of December 31 of the reporting year) would be responsible for 
retaining records, and all associated obligations, that were generated 
by the previous owners or operators of those facilities. Another 
commenter suggested that the responsibility for reporting emissions 
under the WEC should remain with the party responsible for 
recordkeeping for a facility at the time the emissions occur at the 
facility, rather than the time reporting would be required. After 
consideration of the comments received, we are further clarifying from 
proposal that under this final rule, in cases where a facility has a 
single owner or operator and that WEC obligated party is acquired by 
single WEC obligated party such that the WEC obligated party as of 
December 31 for the applicable reporting year ceases to exist, the 
acquiring WEC obligated party assumes responsibility for the acquired 
WEC obligated party's WEC applicable facilities for that reporting 
year. In cases where a facility has a single owner or operator and that 
WEC obligated party is acquired by multiple owners or operators 
following a transaction that results in the WEC obligated party as of 
December 31 for the applicable reporting year to no longer exist, the 
post-transaction owners or operators must select among themselves by 
binding agreement which owner or operator will be the facility's WEC 
obligated party for that reporting year.
4. Gathering and Boosting Related Definitions
    The EPA is revising the definitions for ``gathering and boosting 
system'' and ``gathering and boosting system owner or operator'' under 
40 CFR part 99. The EPA received comments indicated that proposed 
definitions of ``gathering and boosting system'' and ``gathering and 
boosting system owner or operator'' under part 99 do not match the 
revisions under subpart W. The EPA agrees these definitions should 
align with subpart W. Therefore, the EPA is revising from proposal the 
definition for ``gathering and boosting system'' to mean a single 
network of pipelines, compressors and process equipment, including 
equipment to perform natural gas compression, dehydration, and acid gas 
removal, that has one or more connection points to gas and oil 
production or one or more other gathering and boosting systems and a 
downstream endpoint, typically a gas processing plant, transmission 
pipeline, LDC pipeline, or other gathering and boosting system. 
Additionally, the EPA is revising from proposal the definition of 
``gathering and boosting system owner or operator'' to mean any person 
that holds a contract in which they agree to transport petroleum or 
natural gas from one or more onshore petroleum and natural gas 
production wells or one or more other gathering and boosting systems to 
a downstream endpoint, typically a natural gas processing facility, 
another gathering and boosting system, a natural gas transmission 
pipeline, or a distribution pipeline, or any person responsible for 
custody of the petroleum or natural gas transported.
5. Revisions to 40 CFR Part 98, Subpart A Related to WEC Obligated 
Party Definition
    As part of these final amendments, the EPA is also finalizing 
revisions to 40 CFR part 98, subpart A, for all facilities that are 
subject to the GHGRP and report under subpart W. On August 1, 2023 (88 
FR 50282), the EPA proposed revisions to 40 CFR 98.4 to address changes 
in the owner or operator of a facility in the four industry segments in 
subpart W (Petroleum and Natural Gas Systems) that have unique 
definitions of facility. The proposed provisions would define which 
owner or operator is responsible for current and future reporting 
years' reports and clarify how to determine responsibility for 
revisions to annual reports for reporting years prior to

[[Page 91104]]

owner or operator changes for specific industry segments in subpart W, 
beginning with RY2025 reports. In the 2024 Subpart W Final Rule, the 
EPA finalized the provisions regarding current and future reporting 
years' reports in 40 CFR 98.4(n). However, the EPA did not take action 
on proposed amendments related to responsibility for revisions to 
annual reports for reporting years prior to owner or operator changes 
for specific industry segments in subpart W and indicated the intent to 
consider those proposed revisions in coordination with the 2024 WEC 
rulemaking and take action, if finalized, on these requirements at the 
same time.
    The current regulations at 40 CFR 98.4(h), which cover changes in 
owners and operators, absent the changes being finalized in this 
rulemaking, state that in the event an owner or operator of the 
facility or supplier is not included in the list of owners and 
operators in the certificate of representation under this section for 
the facility or supplier, such owner or operator shall be deemed to be 
subject to and bound by the certificate of representation, the 
representations, actions, inactions, and submissions of the designated 
representative and any alternate designated representative of the 
facility or supplier, as if the owner or operator were included in such 
list. 40 CFR 98.4(h) goes on to additionally state that within 90 days 
after any change in owners or operators of the facility or supplier 
(including the addition of a new owner or operator), the designated 
representative or any alternate designated representative shall submit 
a certificate of representation that is complete under this section 
except that such list shall be amended to reflect the change. Thus the 
owners and operators of facilities are bound to the actions, inactions 
and submissions of the designated representative of the facility when 
they become an owner or operator of the facility, as defined in 40 CFR 
part 98. The current regulations at 40 CFR 98.4(g), absent the changes 
being finalized in this rulemaking, state that if there is a change in 
the designated representative or alternate designated representative, 
then all representations, actions, inactions, and submissions by the 
previous designated representative or the previous alternate designated 
representative of the facility are binding on the new designated 
representative and the owners and operators of the facility or 
supplier. Thus, any new owners and operators are bound to the actions 
and submissions of the previous designated representatives, including 
historical submissions for the facility prior to becoming an owner or 
operator. However, the responsibility for reporting under part 98 could 
potentially be inconsistent with the WEC obligated party responsible 
for reporting under 40 CFR part 99, as described earlier in this 
section.
    Many commenters recommended that no new owner should be responsible 
for the WEC generated by the prior owner and that emissions reporting 
should remain the responsibility of the owner or operator who generated 
the reportable emissions. The EPA believes that preparation and 
submission of multiple reports by different entities related to the 
same emission sources would lead to duplicative burden and raise the 
potential for inconsistencies in reported data. After consideration of 
comments received, and in alignment with 40 CFR part 99, in this final 
rule, the EPA is making changes to the regulations for facilities that 
report under subpart W to specify that, with two exceptions, the 
owner(s) and operator(s) as of December 31 of the reporting year, will 
remain responsible for that reporting year, even after sale of the 
facility. These changes are intended to ensure that the entity 
responsible for subpart W data for specific reporting years under 
various transaction scenarios is aligned with the WEC obligated party 
responsible for WEC filing and any WEC obligation in those years. The 
EPA is also clarifying that for the first transaction after January 1, 
2025, the sellers will also remain responsible for historic reporting, 
(i.e., reporting years prior to 2024). Specifically, in this final 
rule, the EPA is adding 40 CFR 98.4(o), which applies in lieu of the 
last sentence of 40 CFR 98.4(g) for facilities that report under 
subpart W, starting with transactions that occur on or after January 1, 
2025, to address responsibility for reporting years prior to a year in 
which there is a change in the owners and operators. According to the 
new paragraph, when there is a change in the owner(s) or operator(s) of 
a subpart W facility on or after the effective date of this final rule 
that involve the owner(s) or operator(s) as of December 31 of the year 
prior to the year of the transaction, the owners and operators as of 
December 31 of the year prior to the year of the transaction, i.e., the 
sellers, must select a historic reporting representative who will be 
responsible after the transaction(s) for that reporting year and if it 
is the first transaction after January 1, 2025, for all prior years. In 
these cases, the owner(s) and operator(s) of the facility as of 
December 31 of the year prior to the year in which the facility is sold 
are bound to the actions of the historic reporting representative and 
any previous designated representative or historic reporting 
representative for the relevant years. The historic reporting 
representative is selected by an agreement binding on the selling 
owner(s) and operator(s), unless the owner(s) or operator(s) selling 
the facility ceases to exist and/or is acquired as a result of a 
transaction(s), in which case all of the owners or operators involved 
in that transaction shall select at the time of sale a historic 
reporting representative by an agreement binding on each of the owners 
and operators involved in the transaction. The second exception is that 
for changes in owners or operators that occur after December 31, 2024 
and before the effective date of this final rule that involve the 
owner(s) and operator(s) as of December 31, 2024, the buying and 
selling owners and operators must jointly select a historic reporting 
representative. In these cases, the owners and operators of the 
facility as of December 31 of the year prior to the year in which the 
facility is sold and the acquiring owners and operators are bound to 
the actions of the historic representative. In any of these scenarios, 
it is the EPA's intent for this person to be the WEC obligated party 
designated representative or represent the WEC obligated party 
corresponding to the applicable part 98 reporting year, for a facility 
that is a WEC applicable facility as defined in 40 CFR 99.2, so that 
there is alignment between WEC obligated parties and the owner(s) and 
operator(s) responsible for reporting for facilities that report under 
subpart W while also clarifying historical reporting requirements. The 
final provisions of 40 CFR 98.4(o) also specify that for cases where an 
entire facility is merged or acquired by a new owner(s) or operator(s), 
the seller must notify the EPA of the date of the last transaction 
resulting in the change to the owner(s) or operator(s) and that the 
acquiring owner or operator must notify the EPA of the e-GGRT ID number 
of the facility acquired in transaction. This additional information is 
necessary to determine when a historical reporting representative is 
required and maintain the ability to verify year-to-year changes in 
annual emissions for facilities post-transaction.
    The final provisions of 40 CFR 98.4(o)(6) specify the reporting 
years for which a historic reporting representative is responsible. 
Based on the effective date of these amendments, these provisions will 
first apply to transactions that occur in calendar year 2025. For the 
first transaction that occur after January 1, 2025, the historic

[[Page 91105]]

reporting representative is responsible for submissions (if they have 
not occurred prior to the transaction) and revisions to annual GHG 
reports under 40 CFR 98.3(h) for all reporting years prior to the 
reporting year in which the transaction occurred. For subsequent 
transactions, the owners or operators of a facility that reports under 
subpart W as of December 31 of each reporting year are responsible for 
reporting and revisions to annual GHG reports corresponding to that 
reporting year. We note that these revisions do not impact how 
reporting responsibility for years prior to reporting year 2024 
transfer upon a change in ownership prior to the effective date of this 
final rule. The existing provisions of subpart A (specifically 40 CFR 
98.4(g)) continue to apply, so that the designated representative or 
alternate designated representative or historic reporting 
representative, as applicable, of the facility for reporting year 2024 
maintain responsibility for the submissions of the previous designated 
representative and any necessary revisions to reports for reporting 
year 2024 and earlier. The final provisions of 40 CFR 98.4(o)(6) also 
specify that if the responsible owner(s) or operators(s) are acquired 
such that the owner(s) or operator(s) cease to exist as a result of a 
transaction, the acquiring owners would become responsible for 
submission (if not already submitted before the transaction) and any 
revisions to annual reports for the reporting year prior to the 
transaction and, if applicable, annual GHG reports under 40 CFR 98.3(h) 
for additional reporting years prior to the transaction as specified in 
paragraphs 40 CFR 98.4(o)(6)(i) and (ii).
6. Additional Definitions To Support WEC Implementation
    The EPA is adding definitions in 40 CFR 99.2 for ``parent 
company,'' ``United States parent company,'' ``qualified professional 
engineer,'' and ``well identification (ID) number,'' which were not 
included as proposed part 99 regulatory definitions in the proposed 
rule. Commenters stated that definitions are necessary to implement CAA 
section 136 and create regulatory harmony. After consideration of 
comments, the EPA believes it will provide clarity to add definitions 
for these terms to implement the WEC. In alignment with part 98 subpart 
A, we are finalizing the definition of ``United States parent company'' 
to mean the highest-level United States company, as reported under 40 
CFR 98.3 for a WEC applicable facility, with an ownership interest in 
the facility as of December 31 of the year for which data are being 
reported. Additionally, for ease of understanding, the EPA is 
finalizing the definition of ``parent company'' to be the United States 
parent company.
    We are also finalizing a definition for the term ``Administrator'' 
to mean the Administrator of the United States Environmental Protection 
Agency or the Administrator's authorized representative. This 
definition is aligned with the definition of the same term in part 98 
subpart A. We proposed to define the term ``e-GGRT ID number'' as the 
identification number assigned to a facility by the EPA's electronic 
Greenhouse Gas Reporting Tool for submission of the facility's part 98 
report. We are instead finalizing the defined term as ``Facility ID 
number'' for consistency of terminology in the final rule and with 
revised definition referring to the Greenhouse Gas Reporting Program 
where the proposal referred to the associated reporting tool and 
omitting the reference to submission of reports as these identifiers 
are not used solely for report submission.
    The EPA also received comments stating that the proposed rule did 
not include sufficient detail regarding the certification criteria for 
third-party auditors. After consideration of comments and as discussed 
in section III.B.2., the EPA is requiring that auditors be qualified 
professional engineers, and is finalizing the definition for 
``qualified professional engineer,'' in alignment with the definition 
of ``qualified professional engineer'' in NSPS OOOOb, to mean an 
individual who is licensed by a State as a Professional Engineer to 
practice in one or more disciplines of engineering and who is qualified 
by education, technical knowledge, and experience to review and 
interpret the records required under 40 CFR 99. Additionally, to align 
with the definition under part 98 subpart W, we are also finalizing the 
definition for ``well ID number,'' to mean the unique and permanent 
identification number assigned to a petroleum or natural gas well. 
Under the final definition, if the well has been assigned a U.S. Well 
Number, the well ID number required in this subpart is the US Well 
Number. Under the final definition, if a U.S. Well Number has not been 
assigned to the well, the well ID number is the identifier established 
by the well's permitting authority.

B. Common Ownership or Control for Netting of Emissions

    One of the important flexibilities created by Congress in section 
136(f)(4) allows for facilities to reduce their overall WEC payments by 
transferring emissions from facilities that are below the waste 
emissions threshold to facilities that have emissions that are above 
the waste emissions threshold (otherwise known as ``netting''). The EPA 
proposed that the owner or operator of the facility should be both the 
WEC obligated party (i.e., the entity responsible for paying the WEC 
obligation) and the highest-level organization across which this 
netting should be allowed. The EPA received numerous comments arguing 
that netting should be allowed at the parent company level to maximize 
flexibility in implementation. After careful consideration of the 
comments and further review of the statutory language, the EPA is 
finalizing provisions that increase access to the netting provisions by 
allowing for the netting of emissions across facilities that are under 
common ownership or control of a parent company, rather than an owner 
or operator as proposed. However, the EPA is finalizing as proposed 
that the owner or operator is the WEC obligated party, thereby making a 
distinction in this final rule that the WEC obligated party and the 
corporate level at which netting may occur do not have to be one and 
the same. Although the EPA is allowing for additional access to netting 
in this final rule by allowing netting to occur at the parent company 
level, the EPA is also providing more specificity on the parameters and 
conditions under which this netting may occur. Additionally, the EPA is 
finalizing requirements for the treatment of net WEC emissions used in 
netting that are subsequently revised or invalidated.
1. EPA Interpretation To Implement ``Common Ownership or Control'' for 
the Purposes of Part 99
    CAA section 136(c), which establishes the methane charge, states 
that ``the Administrator shall impose and collect a charge on methane 
emissions that exceed an applicable waste emissions threshold under 
subsection (f) from an owner or operator of an applicable facility. . 
.'' Congress directly requires that a facility owner or operator, which 
has a distinct and established legal meaning, be the entity on which 
the WEC is imposed and from which a charge is collected. Therefore, the 
EPA is finalizing its determination that the WEC obligated party for a 
particular applicable facility shall be the owner or operator of that 
applicable facility; or if more than one owner or operator exists, the 
owners or operators of that facility must designate an entity to be the 
WEC obligated party. The netting provision at CAA section 136(f)(4), 
meanwhile, allows WEC applicable facilities under

[[Page 91106]]

``common ownership or control'' to net ``emissions by reducing the 
total obligation to account for facility emissions levels that are 
below the applicable thresholds within and across all applicable 
segments'' listed in section 136(d) and as defined in subpart W. In 
this final rulemaking, the EPA is interpreting this language to allow 
netting at the parent company level. Notably, sections 136(c) and 
136(f)(4) employ different language--while 136(c), which establishes 
the WEC obligated party, refers specifically to an ``owner or 
operator'' of an applicable facility, section 136(f)(4) refers to 
facilities ``under common ownership or control.'' The statute therefore 
requires that the facility owner or operator must be the WEC obligated 
party but provides for netting at the parent company level. The final 
requirements for netting are designed to align with both of these 
statutory directives. In this section, the EPA details the overall 
approach for application of common ownership or control and the 
justification for use of a facility's owner or operator as the WEC 
obligated party with netting based on common parent company.
    The EPA proposed that netting would be limited to the WEC obligated 
party level. That is, the owner or operator would be both the WEC 
obligated party and the highest-level entity across which emissions 
could be netted. We received comments on the proposed use of the owner 
or operator as the highest-level entity across which facilities could 
net their emissions. Certain commenters disagreed with the proposed 
interpretation to define ``common ownership or control'' at the owner 
or operator level and stated that a parent company approach would not 
only reflect Congressional intent but would also align with legal 
precedent and the EPA's application of ``common ownership or control'' 
under other programs. These commenters also stated that a parent 
company approach would better incentivize methane emissions reductions, 
as parent companies could more effectively allocate resources across 
their operations for methane mitigation--and would have an incentive to 
do so if netting were allowed at the parent company level. Other 
commenters were supportive of the proposed approach and believed it was 
aligned with the statutory text. After consideration of comments 
received, the EPA is finalizing revisions from the proposed approach 
such that the facility owner or operator remains the WEC obligated 
party, but netting is allowed across owners or operators with the same 
parent company.
    The EPA interprets the netting provision at CAA section 136(f)(4) 
to mean that amongst WEC obligated parties with a common parent 
company, WEC obligated parties with metric tons of methane below the 
waste emissions thresholds (i.e., the difference between emissions 
equal to the waste emissions threshold and reported emissions) may 
transfer ``negative net WEC emissions'' to one or more WEC obligated 
parties with facilities with metric tons of methane emissions that 
exceed the waste emissions thresholds (i.e., positive net WEC 
emissions).\24\ For the purposes of establishing common ownership or 
control under CAA section 136(f)(4), the EPA is finalizing a definition 
of ``WEC obligated party'' in 40 CFR 99.2. The EPA is finalizing that 
each WEC applicable facility be associated with a single WEC obligated 
party (though each WEC obligated party may be associated with multiple 
WEC applicable facilities), which is reported under the requirements at 
40 CFR 99.7.
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    \24\ As further explained in section II.C.3., to calculate the 
amount by which a WEC applicable facility is below or exceeding the 
waste emissions threshold, the EPA is finalizing as proposed to use 
equation B-6 of 40 CFR 99.21(a), in which the facility waste 
emissions threshold, as determined in 40 CFR 99.20, is subtracted 
from total methane emissions from the WEC applicable facility. This 
calculation results in a value of metric tons of methane, the total 
facility applicable emissions, that is positive for facilities 
exceeding the waste emissions threshold (``positive net emissions'') 
and negative for facilities below the waste emissions threshold 
(``negative net emissions'').
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    As discussed in section II.A. of this preamble, the EPA is 
finalizing the definition of ``WEC obligated party'' to mean the WEC 
applicable facility's ``owner or operator'' as defined in 40 CFR 99.2 
for the applicable industry segment as of December 31 of the reporting 
year or that became an owner or operator of the WEC applicable facility 
in a transaction occurring subsequent to the end of the reporting year 
(i.e., between January 1 and December 31 of the year following the 
reporting year) that resulted in the owner or operator of the facility 
as of December 31 of the reporting year ceasing to exist. For WEC 
applicable facilities with more than one owner and/or operator, the WEC 
obligated party must be selected by binding agreement following the 
provisions of 40 CFR 99.4. Each WEC applicable facility must have only 
one WEC obligated party for any given reporting year. WEC obligated 
parties may only net for the applicable reporting year for which they 
are reporting. The EPA is finalizing definitions for owner or operator 
that are applicable to the onshore petroleum and natural gas 
production, offshore petroleum and natural gas production, onshore 
petroleum and natural gas gathering and boosting, onshore natural gas 
processing, onshore natural gas transmission compression, onshore 
natural gas transmission, underground natural gas storage, LNG import 
and export equipment, and LNG storage industry segments at 40 CFR 99.2. 
These definitions are identical to the corresponding definitions in 40 
CFR part 98; that is, the owner or operator (or one of the owners or 
operators, selected by binding agreement between all existing owners or 
operators) associated with a subpart W facility as reported under 40 
CFR 98.3(c)(14) and included in the relevant COR as directed in 40 CFR 
98.4(i)(3) would also be the WEC obligated party for that facility.
    In some cases, a WEC applicable facility may have multiple owners 
and/or operators. In these situations, the EPA is finalizing as 
proposed a system by which the facility owner or operators must 
designate one of the owners and/or operators as the WEC obligated party 
for that facility, as detailed in 40 CFR 99.4. The process for 
selection of the WEC obligated party at facilities with multiple owners 
or operators is similar to the approach for selecting a designated 
representative under 40 CFR part 98. This process requires selection of 
a single WEC obligated party for the WEC applicable facility by an 
agreement binding on each of the owners or operators associated with 
the facility. The final requirements for facilities with multiple 
owners or operators allocate all facility-level methane emissions below 
or exceeding the waste emissions thresholds to a single WEC obligated 
party for each facility.
    The EPA proposed that a facility owner or operator would be both 
the WEC obligated party, and the entity used to define common ownership 
or control. Comments received by the EPA on the proposed approach 
focused on the entity used for netting, and did not distinguish between 
the concepts of the WEC obligated party and the netting entity. Many of 
these comments focused on the proposed interpretation of common 
ownership or control rather than the WEC obligated party; though it is 
likely that commenters assumed that they would be the same entity. In 
other words, the EPA did not receive comments critical of defining the 
WEC obligated party as a facility's owner or operator outside the 
broader discussion of common ownership or control. Instead, commenters 
supported defining the WEC obligated party as the parent company 
because they supported the

[[Page 91107]]

use of netting at the parent company level.
    In this final rule, the EPA recognizes that the appropriate 
corporate level at which netting is allowed need not be the same as the 
WEC obligated party. The EPA is finalizing the use of facility owner or 
operator as the WEC obligated party for three reasons. First, the plain 
text of the statute specifies that an ``owner or operator of an 
applicable facility'' is the entity on which a charge is imposed and 
from which a charge is collected. Second, as noted in the proposed 
rule, designating the owner or operator as the WEC obligated party 
aligns with the approach used in subpart W of the Greenhouse Gas 
Reporting Program, under which the facility owner or operator is 
responsible for reporting the annual emissions which, pursuant to 
requirements under CAA section 136(c), will be used to calculate the 
charge under this program. Third, the agency appreciates that a parent 
company is often a separate legal entity from a facility's owner or 
operator, which could be a wholly owned subsidiary or company of which 
a parent company has partial ownership.\25\ Depending on the structure 
of the corporate family and the applicable corporate laws, the 
liabilities of an owner or operator may not transfer to the parent 
corporate company, even if that parent company fully owns the owner or 
operator. Furthermore, while a parent company may have ownership or 
control over certain aspects of a subsidiary's operations or corporate 
decisions, it does not necessarily have control over the subsidiary's 
assets (such as a facility). In light of Congress's specific reference 
to the ``owner or operator of an applicable facility'' as the entity 
from which the WEC be imposed and collected, and the limitations on the 
extent to which parent companies can assume liabilities held by their 
corporate subsidiaries, the EPA does not believe it is consistent with 
the statute to define the WEC obligated party as a parent company.
---------------------------------------------------------------------------

    \25\ The EPA notes that in some cases, the owner or operator of 
a facility may be a parent company. In these instances, the WEC 
obligated party would by default be a parent company.
---------------------------------------------------------------------------

    Although the statute expressly requires the EPA to treat the owner 
or operator of an applicable facility as the WEC obligated party, it 
does not limit netting solely to facilities belonging to the same owner 
or operator. Further, based upon our consideration of the public 
comments, the EPA has concluded that netting amongst WEC obligated 
parties with the same parent company, rather than at the level of an 
owner or operator, is best supported by the statutory text. There is no 
language in CAA section 136(f)(4), or any other part of CAA section 
136, that limits the definition of ``common ownership or control'' for 
the purposes of netting. The proposed approach of limiting netting 
solely to facilities belonging to the same owner or operator would have 
represented a narrower interpretation of ``common ownership or 
control'' than the statute requires, and in many instances reduced the 
number of ``common'' facilities available for netting relative to a 
parent company approach. In this case, the complete text 136(f)(4) 
states that ``in calculating the total emissions charge obligation for 
facilities under common ownership or control, the Administrator shall 
allow for the netting of emissions by reducing the total obligation to 
account for facility emissions levels that are below the applicable 
thresholds within and across all applicable segments identified in 
subsection (d).'' The EPA believes that the best reading of this 
provision would allow for netting at the parent company level, because 
the statutory text does not put any limitations on the definition of 
``common ownership or control.'' Instead, the full text of the 
provision suggests that the term ``common ownership or control'' should 
be read broadly in this context because 136(f)(4) directs the EPA to 
allow for netting ``with and across all applicable segments . . .'' The 
number of ``common'' facilities will usually be higher when the parent 
company approach is used, and lower when the owner or operator approach 
is used--and owners or operators under common ownership or control of a 
parent company will tend to have operations across more applicable 
segments; the owner or operator of a facility is less likely to also 
own or operate facilities in different industry segments. Congress's 
reference to netting ``within and across'' all applicable segments 
indicates an intent that netting be available across a broader 
geographic area, which supports the parent company approach.
    Therefore, the EPA is finalizing that netting may occur via 
transfer of negative net WEC emissions from a WEC obligated party to 
one or more WEC obligated parties with the same parent company that 
have positive net emissions, since these WEC obligated parties (i.e., 
owners or operators) are under common ownership or control. The 
requirements finalized in this rulemaking define the WEC obligated 
party at the owner or operator level while allowing for netting to 
occur across owners or operators with a common parent company. This 
approach reconciles the statutory language in CAA section 136(c) and 
136(f)(4) in a manner that is implementable and provides the EPA with a 
means to verify netting activities to ensure the integrity of the final 
WEC rule. The use of parent company for determining ``common ownership 
or control'' in this final rule is specific to part 99 and the WEC 
program and does not affect how ``common ownership or control'' is 
defined under other existing EPA or Federal regulations, or in any way 
limit how ``common ownership or control'' may be defined in future 
regulations.
    While the EPA is finalizing a regulatory structure that allows for 
netting to occur across owners or operators with a common parent 
company, the EPA understands that the control a parent company has over 
its subsidiaries (i.e., owners or operators) to take action and to 
participate in netting may vary. Parent/subsidiary relationships are 
heterogeneous and governed by various corporate law structures and/or 
other legal constraints that this rulemaking is not intended to impact 
or alter. Although commenters stated that parent companies have control 
over subsidiaries and make resource allocations across the 
subsidiaries, the EPA cannot confirm whether that is true in all cases. 
This rulemaking allows owners and operators with a common parent 
company to net emissions, provided such netting is not constrained or 
prohibited by other rules or laws.
2. Facilities Eligible for the Netting of Emissions
    The EPA is finalizing which facilities are eligible to participate 
in netting, as allowed by CAA section 136(f)(4). We are finalizing 
netting eligibility criteria based on a facility's total reported 
subpart W GHG emissions, status in relation to the regulatory 
compliance exemption, and overall regulated status under the GHGRP. In 
our final approach to netting, we chose interpretations which are the 
most consistent with a plain reading of the CAA, were reasonable from a 
policy perspective, and were the most transparent and straightforward 
to implement. As described in more detail in the following sections, 
the final approach establishes that if a facility's emissions are not 
subject to the WEC, either because the facility is not a WEC applicable 
facility, or because a WEC applicable facility has zero WEC applicable 
emissions, as a result of application of one or more eligible 
exemptions, that facility's emissions

[[Page 91108]]

would not factor into the netting of emissions for a WEC obligated 
party. In other words, only WEC applicable facilities may net, and only 
WEC applicable emissions may be netted. As explained further in this 
section of the preamble, we believe this interpretation is consistent 
with CAA section 136(f)(4), ``the Administrator shall allow for the 
netting of emissions by reducing the total obligation to account for 
facility emissions levels that are below the applicable thresholds 
within and across all applicable segments identified in subsection 
(d),'' since the reference to ``applicable thresholds'' and 
``applicable segments'', which reflect other subsections under CAA 
section 136, implies that only WEC applicable emissions should be 
considered in the netting calculation. We note that for applicable 
facilities eligible for any exemptions, emissions associated with these 
exemptions are removed from any emissions exceeding the waste emissions 
threshold prior to netting calculations.
    The WEC proposal explained that certain categories of subpart W 
facilities are not eligible for netting because they are out of the 
scope of the WEC program. There are two categories of subpart W 
facilities that report annually under the GHGRP but may have subpart W 
emissions less than or equal to 25,000 mt CO<INF>2</INF>e. These 
include subpart W-only facilities that are on the GHGRP offramp due to 
an emissions level below 25,000 mt CO<INF>2</INF>e, and subpart W 
facilities with total emissions from all GHGRP subparts equal to or 
exceeding 25,000 mt CO<INF>2</INF>e but subpart W emissions less than 
or equal to 25,000 mt CO<INF>2</INF>e. The EPA proposed that these 
facilities would not be subject to the WEC, would not be WEC applicable 
facilities, and would not be eligible for netting. The EPA received 
comments supporting an approach that would allow these facilities to 
net with facilities under common ownership or control whose subpart W 
emissions are above 25,000 mt CO<INF>2</INF>e (i.e., WEC applicable 
facilities). Commenters also supported allowing facilities not required 
to report under subpart W to voluntarily report emissions and include 
those facilities in netting. In all of these suggested approaches, only 
those emissions below the waste emissions thresholds would be brought 
into the netting pool; any additional facilities with subpart W 
emissions equal to or less than 25,000 mt CO<INF>2</INF>e would not 
increase potential exposure to charge because charges for such 
facilities are specifically prohibited by the statute. A facility with 
subpart W emissions equal to or less than 25,000 mt CO<INF>2</INF>e 
would, by statute, not be subject to charge. Other commenters were 
supportive of the proposed approach to only allow facilities with 
subpart W emissions greater than 25,000 mt CO<INF>2</INF>e to 
participate in netting. After consideration of comments received, the 
EPA is finalizing the proposed requirements delineating the types of 
facilities that are eligible for netting. Sections II.B.2.a-d of this 
preamble provide detailed information on the final requirements for 
netting eligibility and the EPA's justification for not expanding 
netting eligibility.
a. Facilities Required To Report to GHGRP and That Have Subpart W 
Emissions Greater Than 25,000 Metric Tons of CO<INF>2</INF>e
    In accordance with CAA section 136(c) and the definition of ``WEC 
applicable facility'' in 40 CFR 99.2, we are finalizing as proposed 
that subpart W facilities that have subpart W emissions greater than 
25,000 mt CO<INF>2</INF>e are eligible for netting, with the exception 
of those that are receiving the regulatory compliance exemption for the 
entire year (as discussed in section II.D.2. of this preamble). 
Facilities that report 25,000 mt CO<INF>2</INF>e or less under subpart 
W are not subject to the WEC, and the EPA is finalizing as proposed 
that such facilities are not eligible for netting. These types of 
facilities are discussed in greater detail in section II.B.2.c. of this 
preamble. The final approach follows what the Agency considers to be 
the best reading of the plain text of, and the relationship between, 
CAA sections 136(d), 136(c), and 136(f) (which includes subsections 
136(f)(4) and 136(f)(1)-(3)). The final approach also represents a 
reasonable policy choice in line with the EPA's understanding of 
Congress's intent that the WEC program constitute a meaningful 
incentive to reduce methane emissions. Accordingly, the following 
sections provides an overview of the relevant statutory text, and the 
corresponding legal basis for the final approach under which only WEC 
applicable facilities may net, and only WEC applicable emissions may be 
netted, under CAA section 136(f)(4). This section also explains the 
policy rationale behind the EPA's final approach.
    CAA section 136(d) introduces the nine industry segments within 
which all subpart W facilities must fall in order to be evaluated for 
WEC applicability. Importantly, facilities within these segments are 
``applicable facilities'', per CAA section 136(d), but they are not 
necessarily ``WEC applicable facilities'', subject to possible WEC 
obligation, unless they report over 25,000 mt CO<INF>2</INF>e per year 
under subpart W. CAA section 136(c) clarifies this point. Specifically, 
CAA section 136(c) requires the Administrator to impose and collect a 
charge on the owner or operator ``of an applicable facility that 
reports more than 25,000 metric tons of carbon dioxide equivalent of 
greenhouse gases emitted per year pursuant to subpart W''. Thus, 
building upon the CAA section 136(d) definition, CAA section 136(c) 
establishes that only facilities which both fall within one or more of 
the nine CAA section 136(d) industry segments and report more than 
25,000 mt CO<INF>2</INF>e under subpart W are subject to the WEC 
program. For clarity, in this rulemaking the EPA refers to these 
facilities as ``WEC applicable facilities''.
    CAA section 136(f), which is entitled ``Waste Emissions 
Threshold'', includes a series of subsections under this heading. 
Subsections 136(f)(1)-(3) illustrate the meaning of ``waste emissions 
threshold'' in this context and explain that these are actually a 
series of thresholds which determine when and how to impose a charge on 
methane emissions from WEC applicable facilities, depending on which 
industry segment or segments they fall under. Specifically, the nine 
CAA section 136(d) industry segments are categorized into four groups, 
and a waste emissions threshold is applied to each of the four. CAA 
section 136(f)(1) covers offshore and onshore petroleum and natural gas 
production (industry segments (1) and (2) under CAA section 136(d)), 
and further divides this category depending on whether or not natural 
gas is sent to sale: ``With respect to imposing and collecting the 
charge under subsection (c) for an applicable facility in an industry 
segment listed in paragraph (1) or (2) of subsection (d), the 
Administrator shall impose and collect the charge on the reported 
metric tons of methane emissions from such facility that exceed (A) 
0.20 percent of the natural gas sent to sale from such facility; or (B) 
10 metric tons of methane per million barrels of oil sent to sale from 
such facility, if such facility sent no natural gas to sale.'' \26\
---------------------------------------------------------------------------

    \26\ 42 U.S.C. at 7436(f)(1).
---------------------------------------------------------------------------

    CAA sections 136(f)(2) and (3) follow the same model: section 
136(f)(2) establishes thresholds for nonproduction petroleum and 
natural gas systems (industry segments (3), (6), (7), and (8) under 
section 136(d),\27\) and

[[Page 91109]]

imposes a charge on ``the reported metric tons of methane emissions 
that exceed 0.05 percent of the natural gas sent to sale from or 
through such facility''; \28\ and section 136(f)(3) establishes 
thresholds for natural gas transmission (industry segments (4), (5), 
and (9)) \29\ and imposes a charge on ``the reported metric tons of 
methane emissions that exceed 0.11 percent of the natural gas sent to 
sale from or through such facility.'' \30\ But each industry-specific 
threshold is introduced in the same way: ``With respect to imposing and 
collecting the charge under subsection (c) for an applicable facility 
in an industry segment listed in paragraph (x) of subsection (d), 
[charges shall be imposed as follows].'' Following this plain text, it 
is clear that the CAA section 136(f) waste emission thresholds apply 
only to WEC applicable facilities--that is, facilities within one or 
more of the nine WEC industry segments listed in CAA section 136(d) 
which emit more than 25,000 mt per year CO<INF>2</INF>e under subpart 
W, and thus may be subject to charge under CAA section 136(c).
---------------------------------------------------------------------------

    \27\ Specifically: (3) onshore natural gas processing; (6) 
liquefied natural gas storage; (7) liquefied natural gas import and 
export equipment; and (8) onshore petroleum and natural gas 
gathering and boosting.
    \28\ Id. at section 7436(f)(2).
    \29\ Specifically, (4) onshore natural gas transmission 
compression; (5) underground natural gas storage; and (9) onshore 
natural gas transmission.
    \30\ Id. at section 7436(f)(3).
---------------------------------------------------------------------------

    Finally, the netting provision itself, CAA section 136(f)(4), 
states that ``in calculating the total emissions charge obligation for 
facilities under common ownership or control, the Administrator shall 
allow for the netting of emissions by reducing the total obligation to 
account for facility emissions levels that are below the applicable 
thresholds within and across all applicable segments identified in 
subsection (d).'' The EPA is finalizing as proposed that this netting 
provision applies to WEC applicable facilities and WEC applicable 
emissions only, for three reasons.
    First, the EPA believes that under the best reading of the statute, 
the term ``applicable thresholds'' refers to the waste emission 
thresholds outlined in CAA section 136(f)(1)-(3). This is important 
because, the waste emissions thresholds apply only to WEC applicable 
facilities--they determine whether, and how, a charge shall be imposed 
on methane emissions from a facility which has already been triggered 
into the WEC program by virtue of its emissions being greater than 
25,000 mt per year CO<INF>2</INF>e in subpart W. The thresholds do not 
apply to facilities which emit 25,000 or fewer metric tons per year of 
CO<INF>2</INF>e under subpart W, because under CAA section 136(c), no 
charge may be imposed or collected on such facilities. Because methane 
emissions from facilities that emit 25,000 or less metric tons per year 
of CO<INF>2</INF>e under subpart W are not WEC applicable emissions, 
they cannot be compared to the waste emissions thresholds, and they 
cannot be considered to fall either above or below these thresholds.
    As previously stated, the EPA's conclusion that the term 
``applicable thresholds'' in CAA section 136(f)(4) refers to the waste 
emissions thresholds outlined in CAA section 136(f)(1)-(3) is supported 
by both the text and structure of the statute. The structure of the 
statute strongly supports the presumption that CAA section 136(f)(4) 
refers to netting based on a facility's relationship to the waste 
emissions thresholds because CAA section 136(f)(4) appears as part of 
CAA section 136(f), under the ``waste emissions threshold'' heading, 
and immediately following CAA section 136(f)(1)-(3)'s establishment of 
the specific waste emissions thresholds for each industry segment. It 
follows that CAA section 136(f)(4)'s reference to ``applicable 
thresholds'' refers to these industry segment-specific requirements, 
and accordingly ``applicable segments'' refers to the industry segments 
identified in CAA section 136(f)(1)-(3).
    The text also strongly supports this interpretation because CAA 
section 136(f)(4) refers to facility emissions levels that are ``below 
the applicable thresholds,'' plural. The use of the plural, and the use 
of the term ``applicable,'' both indicate that Congress was referring 
here to the multiple waste emissions thresholds introduced in CAA 
sections 136(f)(1) through (3), which specifically and separately apply 
to WEC applicable facilities within various subsets of industry 
segments, defined in CAA section 136(d). Again, these separate 
thresholds only apply to WEC applicable facilities, which emit over 
25,000 metric tons per year of CO<INF>2</INF>e.
    In addition to the ``applicable thresholds'' question, the EPA 
believes that Congress's use of the term ``applicable segments'' in 
stating that the EPA may ``redu[ce] the total obligation to account for 
facility emissions levels that are below the applicable thresholds 
within and across all applicable segments identified in subsection 
(d),'' is significant here. While CAA section 136(d) introduces the 
nine relevant ``industry segments'' within which all WEC applicable 
facilities must fall, CAA section 136(f)(4) classifies these segments 
into four groups, and is the only provision to use the term 
``applicable segments.'' CAA section 136(f) establishes a set of 
requirements determining when and how to impose a charge on those 
facilities triggered into the program, depending on their industry 
segment and the amount of methane they emit. It follows that CAA 
section 136(f)(4)'s reference to ``applicable thresholds'' refers to 
these four group-specific thresholds, and ``applicable segments'' 
refers to the nine segments within the four segment groups. In other 
words, each group of segments constitutes the ``applicable'' segments 
to their corresponding applicable threshold. This is important, again 
because the four groups laid out under CAA section 136(f) include only 
WEC applicable facilities.
    Finally, Congress's statement that netting shall be employed ``in 
calculating the total emissions charge obligation for facilities under 
common ownership or control'', further indicates that only WEC 
applicable facilities may be netted. Logic indicates that only WEC 
applicable facilities, with WEC applicable emissions, would be relevant 
to a determination of total emissions charge obligation. As regards the 
WEC program, WEC obligated parties are concerned with methane emissions 
for the WEC applicable facilities for which they are responsible--not 
various other subpart W facilities for which a WEC charge can never be 
imposed.
    In addition to this stated legal rationale, the final approach also 
represents a reasonable policy choice in line with the EPA's 
understanding of Congress's intent that the WEC program constitute a 
meaningful incentive to reduce methane emissions. Specifically, should 
the WEC program allow netting from subpart W facilities emitting 25,000 
mt CO<INF>2</INF>e per year or less under subpart W, WEC obligated 
parties would lose an incentive to reduce emissions at WEC applicable 
facilities that exceed their waste emissions thresholds. Negative 
emissions from facilities with subpart W emissions of 25,000 mt 
CO<INF>2</INF>e or less could be used to net out positive emissions 
from WEC applicable facilities, allowing WEC obligated parties to zero 
out WEC obligations without actually reducing emissions overall. Given 
that many subpart W facilities that report 25,000 mt CO<INF>2</INF>e or 
less under subpart W would also be well below their waste emissions 
threshold, allowing these facilities to net could add significant 
negative tons to the WEC program such that actual methane emissions 
from WEC applicable facilities could increase without increasing WEC 
obligations.

[[Page 91110]]

b. Facilities With Subpart W Emissions Greater Than 25,000 Metric Tons 
of CO<INF>2</INF>e That Are Receiving the Regulatory Compliance 
Exemption
    The EPA is finalizing as proposed that during such time that a 
facility receives the regulatory compliance exemption, that facility 
would have zero WEC applicable emissions and thus would not be able to 
participate in the netting of methane emissions across facilities under 
common ownership or control of a WEC obligated party. The final 
approach is based on a plain reading of the statutory text, and follows 
the same reasoning outlined in section II.B.2.a. of this preamble, 
which explains that under the best reading of the text, only WEC 
applicable facilities may net. This section will further expand upon 
the EPA reasoning that only WEC applicable emissions may be netted, and 
clarify this point for purposes of the regulatory compliance exemption.
    CAA section 136(f)(6)(A) states that ``[c]harges shall not be 
imposed pursuant to subsection (c) on an applicable facility that is 
subject to and in compliance with methane emissions requirements 
pursuant to subsections (b) and (d) of section 111'' if specific 
criteria are met (these criteria are discussed in section II.D.2. of 
this preamble). The EPA's interpretation of the regulatory compliance 
exemption is that, for a WEC applicable facility meeting the exemption 
criteria, the entire facility is exempted, and therefore the facility 
does not generate WEC-applicable emissions. In order to net, facilities 
must be WEC applicable facilities (they must emit over 25,000 mt 
CO<INF>2</INF>e per year under subpart W) and they must also generate 
WEC applicable emissions (methane emissions, as reported under subpart 
W, below or above the WEC emissions thresholds that are subject to 
charge.) Again, this follows from the text. Section 136(f)(4) applies 
``in calculating the total emissions charge obligation'' only. 
Emissions which are subject to an exemption are by definition not 
subject to charge. WEC applicable emissions are only those subpart W 
methane emissions subject to charge under section 136(c). Because WEC 
applicable facilities that receive the regulatory compliance exemption 
for the entire year would have zero WEC applicable emissions, these 
facilities would by default not be able to participate in netting 
(i.e., they would have no emissions to net). The approach of facilities 
with the regulatory compliance exemption for the entire year having 
zero WEC applicable emissions allows for the practical implementation 
of the exemption within the broader framework of the WEC calculations. 
Clarifying that, pursuant to the statutory directive, exempted 
facilities generate zero WEC applicable emissions ensures that charges 
shall not be imposed on these facilities without interfering with 
netting calculations or removing facility-specific reporting elements 
necessary for WEC implementation. Such facilities continue to be 
included in WEC filings reported under part 99 as long as they remain 
WEC applicable facilities. Further, if such facilities fall out of 
compliance such that the regulatory compliance exemption no longer 
applies and they again generate WEC applicable emissions, such 
facilities can again be included in netting. Similarly, for WEC 
applicable facilities that have partial eligibility for the regulatory 
compliance exemption, as described in section II.D.2.f. of this 
preamble, such that they have positive WEC applicable emissions, those 
facilities would also be included in netting.
    The EPA notes that facilities with emissions below the waste 
emissions threshold would not have positive WEC applicable emissions 
and therefore would not benefit from the exemption. In this final rule, 
facilities with emissions below the waste emissions threshold would not 
receive the regulatory compliance exemption, and thus these facilities 
would always have WEC applicable emissions and be able to participate 
in netting across facilities under common ownership or control. Section 
II.D.2.f. of this preamble discusses the regulatory compliance 
exemption in relation to facilities that are below the waste emissions 
threshold.
c. Exclusion of Facilities Reporting 25,000 or Fewer Metric Tons of 
CO<INF>2</INF>e to Subpart W of Part 98
    Per CAA section 136(c), the WEC shall only be imposed on owners or 
operators of applicable facilities that report more than 25,000 mt 
CO<INF>2</INF>e under subpart W. A large number of facilities that 
report under the GHGRP have subpart W emissions below 25,000 mt 
CO<INF>2</INF>e because they report emissions under multiple subparts 
(e.g., subpart W and subpart C) and have total emissions greater than 
25,000 mt CO<INF>2</INF>e across multiple subparts. In addition, some 
part 98 subpart W facilities have reduced their emissions over time and 
are allowed to cease reporting or ``offramp'' due to meeting either the 
15,000 mt CO<INF>2</INF>e level or the 25,000 mt CO<INF>2</INF>e level 
for the number of years specified in 40 CFR 98.2(i) based on the 
CO<INF>2</INF>e reported, as calculated in accordance with 40 CFR 
98.3(c)(4)(i) (i.e., the annual emissions report value as specified in 
that provision).
    We are finalizing as proposed that subpart W facilities with 
subpart W emissions equal to or below 25,000 mt CO<INF>2</INF>e are not 
WEC applicable facilities and are therefore excluded from netting. This 
approach aligns with a plain reading of the requirement in CAA section 
136(c) that only applicable facilities with subpart W emissions 
exceeding 25,000 mt CO<INF>2</INF>e are subject to the WEC--facilities 
below this threshold are not subject to the WEC and therefore do not 
generate WEC applicable emissions and are not eligible to net 
emissions.
d. Exclusion of Facilities Not Required To Report to the GHGRP
    Per CAA section 136(c) and (d), CAA section 136(f)(4), and the 
definition of ``WEC Applicable Facility'' in 40 CFR 99.2, which 
reflects the statutory text at CAA section 136(d), we are finalizing as 
proposed that facilities that are not required to report to the GHGRP, 
and thus are not WEC applicable facilities, are not eligible for 
netting. Again following the reasoning outlined in section II.B.2.a. of 
this preamble, this approach is based on a plain reading of CAA section 
136(f)(4), which states that netting is allowed within and across the 
nine subpart W industry segments identified in CAA section 136(d); 
section 136(d), which states that ``applicable facility(ies)'' are 
facilities within industry segments ``as defined in subpart W''; and 
section 136(c), which states that the WEC is only applicable to subpart 
W facilities that report more than 25,000 mt CO<INF>2</INF>e per year 
under subpart W. Following the plain text, only facilities subject to 
subpart W may be evaluated as possible WEC applicable facilities, and 
only WEC applicable facilities (subpart W facilities emitting over 
25,000 mt CO<INF>2</INF>e under subpart W) can have WEC applicable 
emissions that may be subject to charge. As explained in section 
II.B.2.a. of this preamble, only WEC applicable facilities are eligible 
to net, and only WEC applicable emissions may be netted. Further, CAA 
section 136(c) states that the WEC is only applicable to certain 
facilities that report under subpart W of the GHGRP.

C. Waste Emissions Thresholds

    Congress established waste emissions thresholds for certain oil and 
gas operations to incentivize emissions reductions and efficient 
production, processing, and transport of hydrocarbons. These waste 
emissions thresholds are applied to individual oil and gas facilities; 
facilities that exceed

[[Page 91111]]

the thresholds may be subject to charge, while facilities that are 
below the threshold are not subject to charge. Building upon the 
definitions described in section II.A. of this preamble, this section 
explains the mechanics of the WEC calculations.
    The waste emissions thresholds are defined in terms of industry 
segment-specific methane intensity thresholds applicable to certain 
facilities that report GHG emissions under subpart W of the GHGRP. The 
industry segment-specific methane intensity thresholds specified in CAA 
136(f) and listed in Table 2 of this preamble are based on a rate of 
methane emissions per amount of natural gas or oil sent to sale from or 
through a facility. The industry segment-specific methane intensity 
thresholds are generally defined in terms of a percentage of throughput 
(e.g., 0.002 percent of natural gas sent to sale). However, since the 
WEC is based on metric tons of methane (e.g., $900/metric ton) that 
exceed the threshold, for the purposes of calculating the number of 
metric tons that are subject to charge, we are finalizing as proposed 
an approach that calculates the facility waste emissions thresholds in 
metric tons of methane.
    The EPA proposed specific calculation methodologies and data input 
elements for the WEC calculations. The EPA received comments supportive 
of the proposed approaches for the WEC calculations. We also received 
comments suggesting revisions to the proposed approaches for the waste 
emissions threshold calculation, the methane emissions metric used to 
determine facility tons above or below the waste emissions threshold, 
and the treatment of facilities with zero throughput. However, the 
proposed changes suggested by commenters would not be consistent with 
the plain reading of the CAA and would make the calculations much more 
complicated to implement without necessarily improving accuracy. 
Therefore, the EPA is finalizing the approaches discussed in this 
section of the preamble as proposed, with the exception of the 
treatment of certain facilities with zero throughput.
    For the onshore and offshore petroleum and natural gas production 
industry segments, CAA section 136(f) differentiates based on whether 
the facility is sending natural gas to sale or only sending oil to 
sale, and if the facility does not send natural gas to sale, the 
threshold is based on methane emissions per amount of oil sent to sale. 
For facilities that are not in the onshore or offshore production 
industry segments, the industry segment-specific methane intensity 
thresholds are based on the amount of natural gas sent to sale from or 
through the facility. The industry segment-specific methane intensity 
thresholds are applied to the natural gas or petroleum throughput 
attributable to that industry segment to calculate facility-specific 
waste emissions thresholds. See Table 2 for an overview of how the 
waste emissions thresholds are calculated. When determining whether a 
facility has WEC applicable emissions, the owner or operator of an 
applicable facility must compare the facility's reported methane 
emissions, as reported under subpart W, to the facility's waste 
emissions threshold. Facilities with methane emissions that exceed the 
waste emissions threshold may be subject to charge. For WEC applicable 
facilities with the same WEC obligated party, the WEC applicable 
emissions for each facility are summed to calculate the net WEC 
emissions for that WEC obligated party. For WEC obligated parties with 
the same parent company, WEC obligated parties with negative net 
emissions may transfer those negative emissions to WEC obligated 
parties with positive net emissions. A WEC obligated party's total WEC 
obligation is based on its total emissions at the end of this transfer 
of any negative emissions.
    Subpart W requires reporting of natural gas throughput by thousand 
standard cubic feet, oil by barrels, and methane by metric ton. As a 
practical matter, since the WEC is based on a dollar per metric ton of 
methane, the waste emissions thresholds must generally be converted 
into metric tons of methane for comparison against reported methane, 
generally by multiplying the thresholds by the density of methane.

  Table 2--Industry Segment Throughput Metrics and Methane Intensities
------------------------------------------------------------------------
                                                        Industry segment-
       Industry segment          Throughput metric \a\  specific methane
                                                            intensity
------------------------------------------------------------------------
Onshore petroleum and natural   The quantity of         0.20 percent of
 gas production.                 natural gas produced    natural gas
                                 from producing wells    sent to sale
                                 that is sent to sale    from facility;
                                 in the calendar year,   or 10 metric
                                 in thousand standard    tons of methane
                                 cubic feet 40 CFR       per million
                                 98.236(aa)(1)(i)(B);    barrels of oil
                                 or the quantity of      sent to sale
                                 crude oil produced      from facility,
                                 from producing wells    if facility
                                 that is sent to sale    sends no
                                 in the calendar year,   natural gas to
                                 in barrels, if          sale.
                                 facility sends no
                                 natural gas to sale
                                 under 40 CFR
                                 98.236(aa)(1)(i)(C)
                                 \b\.
Offshore petroleum and natural  The quantity of         ................
 gas production.                 natural gas produced
                                 from producing wells
                                 that is sent to sale
                                 in the calendar year,
                                 in thousand standard
                                 cubic feet 40 CFR
                                 98.236(aa)(2)(i); or
                                 the quantity of crude
                                 oil produced from
                                 producing wells that
                                 is sent to sale in
                                 the calendar year, in
                                 barrels, if facility
                                 sends no natural gas
                                 to sale under 40 CFR
                                 98.236(aa)(2)(ii).
Onshore petroleum and natural   The quantity of         0.05 percent of
 gas gathering and boosting.     natural gas             natural gas
                                 transported through     sent to sale
                                 the facility to a       from or through
                                 downstream endpoint     facility.
                                 such as a natural gas
                                 processing facility,
                                 a natural gas
                                 transmission
                                 pipeline, a natural
                                 gas distribution
                                 pipeline, a storage
                                 facility, or another
                                 gathering and
                                 boosting facility in
                                 the calendar year, in
                                 thousand standard
                                 cubic feet under 40
                                 CFR
                                 98.236(aa)(10)(ii).
Onshore natural gas processing  The quantity of         ................
                                 residue gas leaving
                                 that has been
                                 processed by the
                                 facility and any gas
                                 that passes through
                                 the facility to sale
                                 without being
                                 processed by the
                                 facility in the
                                 calendar year, in
                                 thousand standard
                                 cubic feet under 40
                                 CFR 98.236(aa)(3)(ix)
                                 \b\.
Onshore natural gas             The quantity of         0.11 percent of
 transmission compression.       natural gas             natural gas
                                 transported through     sent to sale
                                 the compressor          from or through
                                 station in the          facility.
                                 calendar year, in
                                 thousand standard
                                 cubic feet under 40
                                 CFR 98.236(aa)(4)(i).
Onshore natural gas             The quantity of         ................
 transmission pipeline.          natural gas
                                 transported through
                                 the facility and
                                 transferred to third
                                 parties such as LDCs
                                 or other transmission
                                 pipelines in the
                                 calendar year, in
                                 thousand standard
                                 cubic feet under 40
                                 CFR
                                 98.236(aa)(11)(iv).
Underground natural gas         The quantity of         ................
 storage.                        natural gas withdrawn
                                 from storage and sent
                                 to sale in the
                                 calendar year, in
                                 thousand standard
                                 cubic feet under 40
                                 CFR 98.236(aa)(5)(ii).

[[Page 91112]]

 
LNG import and export           For LNG import          0.05 percent of
 equipment.                      equipment, the          natural gas
                                 quantity of LNG         sent to sale
                                 imported that is sent   from or through
                                 to sale in the          facility.
                                 calendar year, in
                                 thousand standard
                                 cubic feet; for LNG
                                 export equipment, the
                                 quantity of LNG
                                 exported that is sent
                                 to sale in the
                                 calendar year, in
                                 thousand standard
                                 cubic feet under 40
                                 CFR 98.236(aa)(6) and
                                 (7).
LNG storage...................  The quantity of LNG     ................
                                 withdrawn from
                                 storage and sent to
                                 sale in the calendar
                                 year, in thousand
                                 standard cubic feet
                                 under 40 CFR
                                 98.236(aa)(8)(ii).
------------------------------------------------------------------------
\a\ Throughput metrics in this table are based on the subpart W
  reporting elements as effective January 1, 2025 and would apply for
  assessment of WEC beginning with reporting year 2025. Instances where
  the citation for the throughput metric for reporting year 2024 differs
  are noted in additional footnote. Note that in instances where there
  is no change to the citation for the segment-specific throughput
  metric, the EPA has amended the verbiage of subpart W, effective
  January 1, 2025, for consistency with CAA section 136. Refer to
  section III.U. of the preamble to the 2024 Subpart W Final Rule for
  full discussion of these amendments.
\b\ For reporting year 2024, the applicable subpart W throughput
  reporting element for the onshore natural gas processing industry
  segment is 40 CFR 98.236(aa)(3)(ii).

1. Facility Waste Emissions Thresholds
    CAA section 136(f)(1) through (3) establishes facility-specific 
waste emissions thresholds above which the EPA must impose and collect 
the WEC. The CAA defines waste emissions threshold requirements, and 
establishes the method for calculation of the charge, for nine segments 
of the oil and gas industry.
    CAA section 136(f)(1) requires the EPA to impose and collect the 
WEC on facilities in the onshore petroleum and natural gas production 
and offshore petroleum and natural gas production industry segments 
with methane emissions, in metric tons, that exceed either 0.20 percent 
of the natural gas sent to sale from the facility or, if no natural gas 
is sent to sale, 10 metric tons of methane per million barrels of oil 
sent to sale from the facility. To determine the waste emissions 
threshold from a WEC applicable facility in the onshore petroleum and 
natural gas production and the offshore petroleum and natural gas 
production industry segments, the EPA is finalizing as proposed two 
equations based on whether the facility sends natural gas to sale, 
which reflect the statutory text at 136(f)(1)(A) and (B). For onshore 
and offshore petroleum and natural gas production WEC applicable 
facilities that send natural gas to sale, we are finalizing as proposed 
equation B-1 of 40 CFR 99.20(a). This equation multiplies the annual 
quantity of natural gas sent to sale from a WEC applicable facility by 
0.002 (i.e., 0.20 percent) and the density of methane (0.0192 metric 
tons per thousand standard cubic feet).\31\ For onshore and offshore 
petroleum and natural gas production facilities that have no natural 
gas sent to sale, we are finalizing as proposed equation B-2 of 40 CFR 
99.20(b). In equation B-2, the annual quantity of oil sent to sale from 
a WEC applicable facility is multiplied by 10 metric tons of methane 
per million barrels of oil.\32\
---------------------------------------------------------------------------

    \31\ Equation B-1 reflects the statutory text at 136(f)(1)(A), 
which states: ``With respect to imposing and collecting the charge 
under subsection (c) for an applicable facility [in the onshore 
petroleum and natural gas production and offshore petroleum and 
natural gas production industry segments], the Administrator shall 
impose and collect the charge on the reported metric tons of methane 
emissions from such facility that exceed (A) 0.20 percent of the 
natural gas sent to sale from such facility. . .'' 42 U.S.C. 
7436(f)(1)(A).
    \32\ Equation B-2 reflects the statutory text at 136(f)(1)(B), 
which states: ``With respect to imposing and collecting the charge 
under subsection (c) for an applicable facility [in the onshore 
petroleum and natural gas production and offshore petroleum and 
natural gas production industry segments], the Administrator shall 
impose and collect the charge on the reported metric tons of methane 
emissions from such facility that exceed. . . (B) 10 metric tons of 
methane per million barrels of oil sent to sale from such facility, 
if such facility sent no natural gas to sale.'' 42 U.S.C. 
7436(f)(1)(B).
---------------------------------------------------------------------------

    For WEC applicable facilities in the onshore petroleum and natural 
gas gathering and boosting, onshore natural gas processing, LNG import 
and export equipment, and LNG storage industry segments, CAA section 
136(f)(2) requires the EPA to impose and collect a WEC on facilities 
with reported methane emissions, in metric tons, that exceed 0.05 
percent of the natural gas sent to sale from or through such facility. 
To determine the waste emissions threshold from a WEC applicable 
facility in these industry segments, we are finalizing as proposed 
equation B-3 under 40 CFR 99.20(c). This equation multiplies the annual 
quantity of natural gas sent to sale from or through a WEC applicable 
facility by 0.0005 (i.e., 0.05 percent) and the density of methane 
(0.0192 metric tons per thousand standard cubic feet) to determine the 
facility-level waste emissions threshold.\33\ The EPA notes that 
certain facilities in the gathering and boosting and natural gas 
processing industry segments may have zero throughput values using this 
approach, because these facilities either receive no natural gas, or 
process or dispose of natural gas received in a manner that results in 
sending zero quantities of natural gas to sale. Treatment of these 
facilities is discussed in section II.C.6. of this preamble.
---------------------------------------------------------------------------

    \33\ Equation B-3 reflects the statutory text at 136(f)(2), 
which states: ``With respect to imposing and collecting the charge 
under subsection (c) for an applicable facility in [the onshore 
petroleum and natural gas gathering and boosting, onshore natural 
gas processing, LNG import and export equipment, and LNG storage 
industry segments], the Administrator shall impose and collect the 
charge on the reported metric tons of methane emissions that exceed 
0.05 percent of the natural gas sent to sale from or through such 
facility.'' 42 U.S.C. 7436(f)(2).
---------------------------------------------------------------------------

    CAA section 136(f)(3) requires the EPA to impose and collect a 
waste emissions charge on WEC applicable facilities in the onshore 
natural gas transmission compression, onshore natural gas transmission 
pipeline, and underground natural gas storage industry segments with 
methane emissions, in metric tons, that exceed 0.11 percent of the 
natural gas sent to sale from or through such facility. We are 
finalizing as proposed equation B-4 under 40 CFR 99.20(d) to calculate 
the waste emissions threshold from a WEC applicable facility in these 
industry segments. Equation B-4 multiplies the annual quantity of 
natural gas sent to sale from or through a WEC applicable facility by 
0.0011 (i.e., 0.11 percent) and the density of methane (0.0192 metric 
tons per thousand standard cubic feet) to determine the facility-level 
waste emissions threshold.\34\
---------------------------------------------------------------------------

    \34\ Equation B-4 reflects the statutory text at 136(f)(3), 
which states: ``With respect to imposing and collecting the charge 
under subsection (c) for an applicable facility in [the onshore 
natural gas transmission compression, onshore natural gas 
transmission pipeline, and underground natural gas storage industry 
segments], the Administrator shall impose and collect the charge on 
the reported metric tons of methane emissions that exceed 0.11 
percent of the natural gas sent to sale from or through such 
facility.'' 42 U.S.C. 7436(f)(3).
---------------------------------------------------------------------------

    The annual quantity of natural gas sent to sale from or through a 
facility reported under subpart W is reported in units of thousand 
standard cubic feet of

[[Page 91113]]

natural gas per year, while facility methane emissions are reported in 
metric tons. The EPA interprets the industry segment-specific methane 
intensity thresholds (i.e., 0.20 percent, 0.05 percent, and 0.11 
percent) indicated in CAA section 136(f)(1) through (3) to be in units 
of thousand standard cubic feet of methane emissions per thousand 
standard cubic feet of natural gas. This requires reconciliation of 
methane emissions reported on mass basis and throughput reported on a 
volumetric basis. Because the waste emission charge is assessed using 
dollars per metric ton, the amount by which a facility is below or 
exceeding the waste emissions threshold must ultimately be converted to 
metric tons. The approach in equations B-1, B-3, and B-4 calculates 
facility waste emissions thresholds in metric tons by calculating the 
volume of gas at the given industry segment-specific methane intensity 
and then calculating what the mass of that volume would be if it were 
methane by multiplying by the density of methane (0.0192 metric tons 
per thousand standard cubic feet at standard temperature and pressure 
of 60 [deg]F and 14.7 psia). This allows the waste emissions threshold 
to be directly compared to reported metric tons of methane. This 
approach is mathematically equivalent to, but simpler than, an approach 
that would convert reported methane emissions to volume, subtract a 
volumetric waste emissions threshold from that reported volume, and 
then convert the resulting value back to metric tons methane. The EPA 
notes that the approach used in this final rule does not require 
information on the constituents or density of natural gas throughput.
    As described in this section of the preamble, the waste emissions 
thresholds are calculated at the facility level, using the industry 
segment-specific methane intensity threshold given in CAA sections 
136(f)(1) through (3), and specific industry segment throughput metrics 
reported under part 98, subpart W. The vast majority of facilities 
report as a single subpart W facility to a single subpart W industry 
segment. However, as discussed in section II.A. of this preamble, there 
are a small number of reporters that report as a single subpart W 
facility to multiple subpart W industry segments. Specifically, for 
facilities that report to multiple industry segments under a single 
subpart W facility, we are finalizing in 40 CFR 99.20(e) that the 
facility-level waste emissions threshold is determined as the sum of 
the waste emissions thresholds for each industry segment within which 
the facility operates.
    The EPA is finalizing as proposed its interpretation of ``natural 
gas sent to sale'' to mean the amount of natural gas sent to sale from 
a facility in the onshore or offshore petroleum and natural gas 
industry segments, as reported under subpart W. The EPA is finalizing 
as proposed its interpretation of ``natural gas sent to sale from or 
through'' to mean the natural gas throughput volume for a facility not 
in the onshore or offshore petroleum and natural gas industry segments 
that aligns with the movement of gas through a facility (e.g., gas 
transported rather than gas received), as reported under subpart W. For 
facilities in the onshore and offshore petroleum and natural gas 
production industry segments that do not send natural gas to sale, the 
EPA is finalizing as proposed its interpretation of ``barrels of oil 
sent to sale'' to mean the quantity of crude oil sent to sale, as 
reported under subpart W.
    The EPA is aware of and received comment on other approaches for 
calculating ``methane intensity'' currently in use. These include 
methodologies that allocate total methane emissions between the 
petroleum and natural gas value chains and/or use methane rather than 
natural gas as the throughput value. CAA section 136(f)(1) through (3) 
refers to reported facility emissions and does not discuss allocation 
of emissions between petroleum and natural gas. In the case of the 
methane charge program established in CAA section 136, the statutory 
text is clear that facilities that produce only oil are to calculate 
the waste emissions threshold based on only on the quantity of oil sent 
to sale. The statutory text is clear that in all other cases, the 
quantity of natural gas sent to sale is the appropriate throughput 
value.\35\ Further, the final approach can be implemented with data 
currently reported under subpart W, while alternative methane intensity 
methodologies would require reporting of additional data and increase 
the burden on the oil and gas industry. For example, an approach that 
calculates intensity as methane emissions divided by the methane in 
natural gas throughput would require facilities to collect and report 
additional information of the methane content of natural gas. Again, 
this approach would not be aligned with the statute, which defines the 
intensity as methane emissions as a percentage of natural gas, not 
methane emissions as a percentage of methane. An approach that 
calculates methane intensity as the mass of methane emissions divided 
by the mass of natural gas would also not align with a plain reading of 
the statutory text or standard conventions. The natural gas sent to 
sale from or through a facility is reported under subpart W in thousand 
standard cubic feet, a volumetric unit of measure. Congress was aware 
of this metric when it established the waste emissions thresholds. 
Further, all percentage-based methane intensity metrics that the EPA is 
aware of are volume-based rather than mass-based, and while natural gas 
throughput is commonly reported both in terms of volume and energy 
content, it is not common practice to report throughput in terms of 
mass. Such an approach would also require facilities to collect and 
report detailed information on all of the constituents of natural gas 
throughput. Finally, an approach that allocates methane emissions 
between the petroleum and natural gas value chains based on energy 
content would not be aligned with the statute, which does not make any 
mention of allocating total facility methane emissions to the petroleum 
and natural gas value chains and assessing the WEC using a subset of 
total facility emissions. This approach would also require facilities 
to collect and report detailed data on the constituents and energy 
content of all hydrocarbon throughput. The EPA therefore believes that 
the approaches finalized in this rulemaking not only follow a plain 
reading of CAA section 136(f) but are also the best and most reasonable 
approaches.
---------------------------------------------------------------------------

    \35\ See 42 U.S.C. 7436(f)(1)-(3).
---------------------------------------------------------------------------

2. Facility Methane Emissions
    To determine the total methane emissions from a WEC applicable 
facility, the EPA is finalizing as proposed to use facility-level 
methane data as reported under subpart W. Facility methane emissions 
must be calculated using methods or data required by subpart W and by 
this final rule for the emissions year covered by the annual WEC 
filing. For example, for the first year of the WEC (2024 emissions), 
WEC calculations are based on the subpart W requirements effective for 
the 2024 reporting year, and emissions year 2025 emissions and beyond 
are based on subpart W requirements effective in reporting year 2025 or 
any future revisions. The final approaches for calculating waste 
emissions thresholds and facility methane emissions align with the text 
of CAA section 136(f). CAA section 136(f)(1) through (3) states that 
the WEC is to be calculated based ``on the

[[Page 91114]]

reported metric tons of methane emissions from such facility that 
exceed'' specified percentages of the ``natural gas sent to sale from 
such facility'' or ``natural gas sent to sale from or through such 
facility'' (or for onshore and offshore petroleum facilities that do 
not send gas to sale, ``ten metric tons of methane per million barrels 
of oil sent to sale from such facility''). The EPA is finalizing its 
interpretation of ``reported metric tons of methane emissions'' to mean 
all reported methane emissions from a facility, as reported under 
subpart W, except in cases when emissions for stationary combustion 
emissions reported under 40 CFR 98.236(z) double-count emissions 
reported for an other large release event under 40 CFR 98.236(y), in 
which case the ``reported metric tons of methane emissions'' are 
adjusted according to the provisions finalized at 40 CFR 
99.7(b)(2)(ix). This value, only adjusted to prevent double-counting as 
specified, is an input to equation B-6 of 40 CFR 99.21.
    We are finalizing these provisions to adjust the subpart W methane 
emissions to prevent double-counting in the unlikely event that a 
stationary combustion source emits at the level requiring reporting as 
an other large release event in the subpart W report for a WEC 
applicable facility. In general, we did not expect that any stationary 
combustion source would have emissions above the threshold required to 
be reported under the provisions at 40 CFR 98.236(y) for other large 
release events. To qualify for reporting as an other large release 
event, the stationary combustion source must have methane emissions of 
100 kg/hr or greater. We note that this emission rate would be 
evaluated on a per individual stationary combustion source basis unless 
they have a single root cause and we do not believe any single 
stationary combustion source would emit methane at this level unless it 
was significantly malfunctioning. Therefore, we expect that stationary 
combustion sources would be reported under the provisions of other 
large release events only under rare circumstances. For sources other 
than stationary combustion sources that have calculation methods in 
subpart W, the 100 kg/hr threshold is evaluated incremental to the 
emissions estimated using the methods in subpart W and subpart W 
contains provisions in 40 CFR 98.233(y)(1)(ii) to prevent double-
counting of emissions reported under other large release events and 
these other subpart W calculation methods. However, stationary 
combustion emissions are subject to direct assessment of the 100 kg/hr 
threshold as specified in 40 CFR 98.233(y)(1)(i) with no provisions to 
revise emissions calculated under 98.233(z) for the period of time the 
stationary source was malfunctioning and emitting methane at rates 
exceeding 100 kg/hr. Therefore, it is possible, however unlikely, that 
there may be some double-counting of emissions being reported under 40 
CFR 98.236(y) and (z) and we are finalizing part 99 provisions to 
ensure that the total methane emissions (and the total CO<INF>2</INF>e 
emissions) for the facility are corrected for part 99 purposes to 
prevent this potential for double-counting of emissions under the WEC 
program. In the exceedingly unlikely event that the total 
CO<INF>2</INF>e for a facility drops below the 25,000 mt 
CO<INF>2</INF>e WEC reporting threshold as a result of this adjustment 
for double-counting of emissions, we are finalizing 40 CFR 
99.7(b)(2)(ix) related to the reporting requirements and assessment of 
WEC for such facilities. In this circumstance, the total facility 
applicable emissions and WEC applicable emissions for the facility 
would be defined as zero, and the facility would not be subject to 
reporting requirements beyond those necessary to link the facility to 
subpart W reporting and substantiate the existence of double-counting 
of emissions due to the reporting of stationary combustion source 
emissions as an other large release event.
3. Facility WEC Calculation
    To calculate the amount by which a WEC applicable facility is below 
or exceeding the waste emissions threshold, the EPA is finalizing as 
proposed to use equation B-6 of 40 CFR 99.21(a), in which the facility 
waste emissions threshold, as determined in 40 CFR 99.20, is subtracted 
from facility total methane emissions. This calculation results in a 
value of metric tons of methane, the total facility applicable 
emissions, that is negative for facilities below the waste emissions 
threshold and positive for facilities exceeding the waste emissions 
threshold. The remainder of 40 CFR 99.21 describes how to determine the 
WEC applicable emissions below or exceeding the waste emissions 
threshold considering any exemptions that may apply for WEC applicable 
facilities with total facility applicable emissions greater than 0 mt 
CH<INF>4</INF> (see section II.D. of this preamble for more information 
on the exemptions). As discussed in section II.D.2. of this preamble, 
the EPA is finalizing as proposed that WEC applicable facilities 
receiving the regulatory compliance exemption for the entire year are 
exempted from the WEC, and therefore have zero WEC applicable 
emissions. Section II.D.2.g. of this preamble also explains the 
facility-level WEC applicable emissions calculation for facilities with 
partial eligibility for the regulatory compliance exemption. For 
facilities with total facility applicable emissions greater than 0 mt 
CH<INF>4</INF> that are eligible for the unreasonable delay or plugged 
well exemptions, any methane emissions associated with those exemptions 
are subtracted to calculate WEC applicable emissions. See sections 
II.D.1.b and II.D.3.b of this preamble for explanation of how the 
quantity of methane emissions that qualify for exemption due to the 
unreasonable delay and plugged well exemptions, respectively, are 
calculated. These calculations rely upon methane emissions data 
reported to subpart W and calculation methodologies specified in this 
final rule. For all other facilities, facility applicable emissions are 
equal to WEC applicable emissions (unless the facility is receiving the 
regulatory compliance exemption).
4. Calculation Procedures for Netting
    As described in section II.B., the EPA is finalizing that the owner 
or operator is the WEC obligated party while allowing for netting among 
WEC obligated parties with the same parent company. This structure 
creates a potential mismatch in liability should one owner or operator 
incorrectly calculate their subpart W emissions and/or their WEC 
obligation, and then magnifies this error by netting emissions with 
another owner or operator with the same parent company. Therefore, in 
this section, the EPA is providing additional details and restrictions 
on how the netting calculations must be done when netting is used, and 
how the netting transactions must be tracked and reported.
    As described in section II.A.3. of this preamble, if a WEC 
applicable facility has multiple owners or operators, those entities 
must elect among themselves by binding agreement a single owner or 
operator as the WEC applicable facility's WEC obligated party for a 
given year. Similarly, if a WEC applicable facility has multiple parent 
companies, that facility's WEC obligated party must indicate in its 
certificate of representation for the reporting year and its annual WEC 
filing which parent company is selected for the purposes of designating 
the WEC obligated party's (i.e., owner's or operator's) netting pool. 
If a WEC applicable facility has multiple owners or operators and 
multiple parent companies, the owner or operator selected as the WEC 
obligated party and

[[Page 91115]]

the parent company selected for netting must be related (e.g., the WEC 
obligated party must be a subsidiary or at least partially owned by the 
parent company selected for netting). These requirements are included 
as part of the contents of the certificate of representation submitted 
by the WEC obligated party for the reporting year pursuant to the 
finalized requirements of 40 CFR 99.4(i) as well as the annual WEC 
filing pursuant to the finalized requirements of 40 CFR 99.7(b). Within 
the certificate of representation, the WEC obligated party must 
identify the WEC applicable facilities for which they are responsible 
for the reporting year as well as the parent company for which these 
facilities would be included in netting. Within the annual WEC filing, 
the WEC obligated party must indicate whether any of the WEC applicable 
facilities were acquired in transactions that resulted in the owners or 
operators for the facility as of December 31 of the reporting year 
ceasing to exist, and whether such facilities were associated with a 
parent company that is different from the WEC obligated party's parent 
company pursuant to the finalized requirements of 40 CFR 
99.7(b)(1)(iv). This reporting is required because as a result of the 
finalized requirement of 40 CFR 99.4, a WEC obligated party may become 
responsible for the reporting of a WEC applicable facility for which 
they were not an owner or operator of as of December 31 of the 
reporting year, and which may not have been under the common ownership 
or control of the WEC obligated party's parent company as of December 
31 of the reporting year.
    The EPA is finalizing rules and requirements at 40 CFR 99.23 to 
govern the transfer of net WEC emissions across WEC obligated parties 
with a common parent company. The first step in the finalized netting 
process is the calculation of metric tons of methane emissions equal 
to, below, or exceeding the waste emissions threshold, or WEC 
applicable emissions, for each WEC applicable facility as specified in 
40 CFR 99.21. The next step is summing WEC applicable emissions across 
all of a WEC obligated party's WEC applicable facilities. This 
calculation, finalized at 40 CFR 99.22(a) using equation B-8, yields 
net WEC emissions for each WEC obligated party. In circumstances where 
a WEC obligated party became responsible for facilities for which they 
were not an owner or operator of as of December 31 of the reporting 
year, the requirements at 40 CFR 99.2(b) and (c) would instead apply 
and the WEC obligated party would determine separate net WEC emission 
totals for their WEC applicable facilities that shared the same parent 
company as identified in the certificate of representation and those 
WEC applicable facilities that did not share the same parent company. 
The final step involves optional netting of emissions across WEC 
obligated parties with the same parent company. In this process, WEC 
obligated parties with negative net WEC emissions (as calculated using 
Equation B-8) may transfer those negative net WEC emissions to WEC 
obligated parties (with positive net WEC emissions) with the same 
parent company. After the negative net WEC emissions have been 
transferred as determined by each of the WEC obligated parties with a 
common parent company, each WEC obligated party's net WEC emissions 
after transfers, or total methane emissions above or below the waste 
emissions threshold is finalized. This final amount of metric tons 
methane is used to determine if a WEC obligated party owes a WEC 
obligation for the given year.
    Since the owner or operator is the WEC obligated party, they are 
ultimately responsible for the entire WEC payment associated with their 
total emissions above the waste emissions threshold. Although an 
individual owner or operator's WEC obligation may be reduced based on 
netting with another owner or operator that has WEC applicable 
emissions below the waste emissions threshold within the parameters 
specified, if those negative quantities of net WEC emissions are later 
invalidated, the WEC obligated party who received the negative WEC 
emissions to reduce their WEC obligation would be required to resubmit 
their WEC filing to remove the negative WEC emissions from their 
calculations and would have to adjust their payment accordingly. 
Provisions applicable to this scenario are finalized at 40 CFR 
99.23(f)(2).
    A key element of WEC obligated party netting is that WEC obligated 
parties with zero or negative net WEC emissions cannot be subject to 
charge. A WEC obligated party with negative net WEC emissions may 
transfer negative quantities of net WEC emissions to WEC obligated 
parties with whom it shares the same parent company as finalized at 40 
CFR 99.23(a), but it can never receive positive emissions. Similarly, 
the WEC obligation of a WEC obligated party can never exceed the charge 
that would be calculated using their net WEC emissions. The WEC 
obligated party's positive net WEC emissions after transfers can 
decrease but can never increase as a result of netting. In other words, 
only negative quantities of net WEC emissions can be transferred, and 
positive quantities of net WEC emissions cannot be transferred as 
finalized at 40 CFR 99.23(b). Further, negative net WEC emissions and 
negative net WEC emissions after transfers cannot be banked or 
otherwise saved for a future WEC filing year; all negative net WEC 
emissions and negative net WEC emissions after transfers are valid only 
for the WEC filing year in which they were created.
    The EPA is also finalizing requirements to address impacts to 
netting that result from WEC filing resubmissions. While the EPA 
expects that most questions related to unverified subpart W data will 
be resolved by the time of the WEC filing, continued revisions to 
subpart W reports or WEC filing resubmissions that impact emissions 
(e.g., revisions to exemption data) could impact a WEC obligated 
party's net WEC emissions and thus netting. These include situations in 
which revisions invalidate negative net WEC emissions that have been 
transferred and situations in which revisions result in additional 
negative net WEC emissions that become available for transfer. As 
discussed in section III.B. of this preamble, resubmissions of WEC 
filings, including the applicable subpart W data, will not be accepted 
after December 15 unless the resubmission is related to eligibility for 
the regulatory compliance exemption, resolution of the verification 
process (including third-party auditing), or otherwise permitted by the 
Administrator.
    The EPA is finalizing that any WEC obligated party that receives 
negative net WEC emissions loses the benefit of those negative net WEC 
emissions if they are later invalidated. For example, if WEC obligated 
party A transferred negative 10 metric tons of methane to WEC obligated 
party B with the same parent company, but a revision to the WEC filing 
for the WEC obligated party A results in the 10 metric tons of negative 
emissions being eliminated, the final WEC emissions of the WEC 
obligated party B that received the emissions will revert to the number 
it was before the 10 metric tons were subtracted from the total. This 
means that in this circumstance, the final WEC emissions of receiving 
WEC obligated party B would increase by 10 metric tons.
    To determine how previously transferred negative net WEC emissions 
that are later invalidated are removed from netting when multiple WEC 
obligated parties receive negative tons, the order in which transfers 
were approved by the designated

[[Page 91116]]

representative of the WEC obligated party receiving the transfer in 
accordance with the finalized requirement of 40 CFR 99.23(c) will be 
used on a ``last in first out'' basis. This indicates the order and 
amount of negative net WEC emissions that are removed from the net WEC 
emissions after transfers of a WEC obligated party that receives any 
negative net WEC emissions, should any of the negative net WEC 
emissions be invalidated. Affected WEC obligated parties would be 
required to submit a revised WEC filing and pay any new charge or 
increase in charge pursuant to the finalized requirements of 40 CFR 
99.7(e) and 99.8(d). In situations where revisions to WEC filings 
result in additional negative net WEC emissions becoming available for 
netting, the applicable WEC obligated party with newly available 
negative net WEC emissions for transfer may transfer those negative net 
WEC emissions to another eligible WEC obligated party. The receiving 
WEC obligated party may then refile. The EPA will then provide any 
applicable refunds post verification of the amended report. Provisions 
applicable to the change in availability of transferred WEC emissions 
as a result of revisions to the WEC filing for the WEC obligated party 
that provided the transfers are finalized at 40 CFR 99.23(f). All of 
these requirements are designed to allow for netting at the parent 
company level while addressing the potential mismatch in WEC 
obligations should one owner or operator incorrectly calculate their 
WEC obligation and then magnify this error by netting with another 
owner or operator with the same parent company.
    The EPA is finalizing reporting and recordkeeping requirements at 
40 CFR 99.23 for WEC obligated party emissions netting. As finalized at 
40 CFR 99.23(c), each transfer of negative quantities of net WEC 
emissions must be completed in an electronic format specified by the 
Administrator. The EPA anticipates that these transfers will occur in 
an electronic system similar to the existing e-GGRT system used by the 
GHGRP. Each transfer must be initiated by the designated representative 
of the WEC obligated party that is transferring the negative quantities 
of net WEC emissions. The transfer will be considered to have occurred 
at such time that the designated representative of the WEC obligated 
party that is receiving the transfer approves receipt of the transfer. 
The electronic system will record the metric tons of negative WEC 
emissions that are transferred, the WEC obligated parties involved in 
each transfer, and the time that the designated representative of the 
WEC obligated party receiving the transfer approved receipt. These 
records will establish the order of precedence for these metric tons 
under the finalized requirement of 40 CFR 99.23(f)(2) related to 
transfers that are later invalidated. These electronic records are 
essential to establish the requirements for facilities to participate 
in netting, as allowed by CAA section 136(f)(4). Finally, WEC obligated 
parties that transfer and receive negative net WEC emissions must 
maintain all records associated with the transactions, including but 
not limited to any value exchanged, if applicable, for emissions 
transferred to each WEC obligated party under the finalized requirement 
of 40 CFR 99.23(g).
5. Waste Emissions Charge Calculation
    CAA section 136(e) establishes annual $/metric ton charges for all 
methane emissions for which a charge is owed. The EPA is finalizing as 
proposed that a WEC obligated party's total annual WEC obligation is 
calculated by multiplying its net WEC emissions after transfers, as 
determined by Equation B-8 and after any transfer of emissions pursuant 
to 40 CFR 99.23, by the annual $/metric ton charge. WEC obligated 
parties with net WEC emissions after transfers less than or equal to 
zero do not have a WEC obligation. WEC obligated parties with net WEC 
emissions after transfers greater than zero have a WEC obligation and 
are required to pay a waste emissions charge. WEC obligation 
calculations are to be made for calendar years 2024, 2025, 2026, and 
each year thereafter as per 40 CFR 99.24.
6. Gathering and Boosting and Processing Facilities With Zero Reported 
Throughput
    The EPA is aware of a small number of gathering and boosting and 
natural gas processing facilities that emit methane and report under 
subpart W, but do not send gas to sale. As a result, these facilities 
would report zero natural gas volumes for the throughput metrics used 
in the waste emissions threshold calculations. For the gathering and 
boosting industry segment, these may be facilities that receive natural 
gas but then reinject it underground or otherwise do not transport any 
natural gas. For the processing industry segment, these may be 
fractionation plants that only receive and process natural gas liquids 
(NGLs) and do not handle natural gas. We proposed that all reported 
methane emissions from facilities with no reported throughput would be 
considered to be exceeding the waste emissions threshold. We received 
comments disagreeing with the EPA's proposed approach and 
interpretation of the statutory text, indicating that WEC applicable 
facilities that do not send gas to sale are not contemplated by the 
statute and that it is inappropriate for the EPA to impose a charge in 
the absence of an applicable threshold. After continued review of the 
statutory text and consideration of comments received on the treatment 
of these facilities, we are finalizing a determination that these 
facilities do not generate WEC applicable emissions, and therefore will 
not be subject to charge. Using Equation B-3 under 40 CFR 99.20(c), 
gathering and boosting and processing facilities with zero natural gas 
throughput would have a waste emissions threshold of 0 mt; all reported 
methane emissions from these facilities would therefore be exceeding 
the threshold. However, CAA section 136(f)(2), the statutory text from 
which Equation B-3 is derived, states that the waste emissions 
threshold is calculated using the ``natural gas sent to sale from or 
though'' a facility. These specific types of gathering and boosting and 
processing facilities do not send any natural gas to sale. Therefore, 
based on the language in CAA section 136(f)(2), it would not be 
appropriate to subject these facilities to charge. Although the EPA is 
not aware of facilities in industry segments other than gathering and 
boosting and processing that would report emissions to subpart W of 
more than 25,000 mt CO<INF>2</INF>e while having zero throughput of 
natural gas or oil sent sales, the EPA believes the same interpretation 
should apply that they would not be subject to charge. The EPA is 
finalizing language at 40 CFR 99.21 that for a WEC applicable facility 
for which the waste emissions threshold is zero, the total facility 
applicable emissions (i.e., the methane emissions equal to, below, or 
exceeding the waste emissions threshold for a WEC applicable facility 
prior to consideration of any applicable exemptions) and the WEC 
applicable emissions (i.e., the methane emissions equal to, below, or 
exceeding the waste emissions threshold for a WEC applicable facility 
after consideration of any applicable exemptions) are both zero.

D. Exemptions to the Waste Emissions Charge

    Congress created three exemptions to the WEC to reduce or eliminate 
the charge under certain circumstances. The first exempts emissions 
that result from eligible delays in environmental permitting. The 
second exempts from

[[Page 91117]]

charge those facilities that are in compliance with applicable CAA 
section 111 regulations, once certain criteria are met. The third 
exempts emissions from wells that are permanently plugged. The EPA 
received numerous comments indicating that the proposal made accessing 
the exemptions designed by Congress infeasible and impractical. In this 
final rule, the EPA has made a number of changes to the exemptions, in 
particular the regulatory compliance exemption, to ensure that access 
to, and implementation of, these exemptions is appropriate and 
consistent with the best reading of the statute. In addition, the EPA 
is clarifying in this final rule that a WEC obligated party may elect 
whether or not to submit a claim for exemption for a WEC applicable 
facility that meets the applicability requirements for each exemption.
1. Exemption for Emissions From Eligible Delays in Environmental 
Permitting (CAA Section 136(f)(5))
    The permitting delay exemption created by CAA section 136(f)(5) 
allows for production facilities to reduce their WEC obligation if the 
permitting of natural gas offtake infrastructure is delayed 
unreasonably. Congress identified unreasonable delays in approval of 
permits for offtake infrastructure as a possible barrier to methane 
mitigation for WEC obligated parties, particularly because these delays 
could prevent increased volumes of natural gas from being routed to a 
sales line, and therefore directed the EPA to determine what 
constitutes an unreasonable delay. In this action, the EPA is 
finalizing provisions that clarify the definition of an unreasonable 
delay for the purposes of this exemption, under what circumstances the 
permitting delay exemption will be available to WEC obligated parties, 
and what emissions (i.e., from what sources) are eligible for the 
exemption.
    CAA section 136(f)(5) establishes an exemption for emissions 
resulting from delay in environmental permitting by stating, ``Charges 
shall not be imposed pursuant to paragraph (1) on emissions that exceed 
the waste emissions threshold specified in such paragraph if such 
emissions are caused by unreasonable delay, as determined by the 
Administrator, in environmental permitting of gathering or transmission 
infrastructure necessary for offtake of increased volume as a result of 
methane emissions mitigation implementation.''
    This provision exempts from the charge certain emissions occurring 
at facilities in the onshore and offshore production segments where 
permitting has been unreasonably delayed. Paragraph (1) referenced in 
the exemption refers to CAA section 136(f)(1), which establishes the 
waste emissions threshold for applicable facilities in the production 
sector, as discussed in section II.B. of this preamble. The exemption 
is limited to emissions occurring as a result of certain delays in 
environmental permitting of gathering or transmission infrastructure 
necessary for offtake of increased volume as a result of methane 
emissions mitigation implementation. The EPA interprets ``gathering or 
transmission infrastructure necessary for offtake'' to include 
gathering and transmission pipelines and compressor stations, and 
``increased volume as a result of methane emissions mitigation 
implementation'' to include increased amounts of natural gas at on- or 
offshore production facilities available for transport that would have 
otherwise been emitted if not for an unreasonable delay in the 
environmental permitting of offtake infrastructure.
a. Emissions Eligible for the Permitting Delay Exemption
    To assist in defining and determining ``unreasonable delay'' 
related to environmental permitting, the EPA is finalizing a set of 
four criteria for applying the unreasonable delay exemption established 
by CAA section 136(f)(5). These criteria only apply in the context of 
determining eligible emission exemptions for the implementation of CAA 
136(f)(5) and this final rulemaking; they are not intended to speak to 
the reasonableness of a permitting delay in any other context. The EPA 
understands that the issue of what constitutes an unreasonable delay is 
multi-faceted and may be quite different under different regulatory and 
factual circumstances. At the same time, the EPA believes it is 
important in the context of this program to provide a definition that 
is consistent with the statutory charge, practical for the EPA to 
administer, and straightforward for applicable facilities to follow. 
With those caveats in mind, the EPA is finalizing the following four 
criteria for implementing this exemption, largely as proposed: (1) the 
facility must have emissions that exceed the waste emissions threshold; 
(2) the entity seeking the exemption must have not contributed to the 
delay in permitting; (3) the exempted emissions must be those resulting 
from gas used as an onsite fuel source, gas used for another useful 
purpose that an otherwise purchased fuel or raw material would have 
served, gas reinjected into a well, or gas flared, if that gas would 
have been routed to a gas gathering flow line or collection system to a 
sales line without the permit delay; and (4) a period of 36 months must 
have passed from the time a submitted permit application was determined 
to be technically complete by the applicable permitting authority.
    The EPA believes this approach aligns with the statutory text and 
meets the Congressional intent of this exemption, while also providing 
reporting facilities with a clear and predictable set of criteria that 
the EPA can apply in a timely manner. The EPA requested and received 
comment on numerous aspects of this exemption. Comments on the four 
proposed criteria for determining exemption eligibility are discussed 
in the following paragraphs. Several commenters recommended that the 
EPA retain strong and clear criteria in the final rule for operators 
seeking an exemption based on unreasonable environmental permitting 
delays. Separate from the four criteria, several commenters were 
opposed to the proposed approach of using defined criteria for 
assessing exemption eligibility and recommended that the EPA evaluate 
each eligibility claim on a case-by-case basis. These commenters stated 
that the circumstances of each individual permitting delay are unique 
such that they can only be assessed on a case-by-case basis. The EPA 
decided against such an approach in this final rule for several 
reasons. Reviews of the individual circumstances of each situation 
would run counter to Congressional intent because facilities would be 
unable to predict what they owe, take action to limit any applicable 
charge, or settle their WEC obligation in a timely manner, potentially 
leading to payments that were later found subject to this exemption. 
The approach the EPA is adopting means that payments are more likely to 
align with amounts owed, including applicable exemptions, and thus more 
closely track the purpose for which Congress included this exemption. A 
case-by-case approach would also create a significant time and resource 
burden for both regulated entities and for the EPA. We expect that many 
types of permitting situations can arise, with many permutations. If 
industry were required to demonstrate unreasonable delay on a case-by-
case basis, the review process would have resulted in uncertainty for 
industry and could have led to a significant backlog, thus making the 
annual calculation of the WEC obligation unduly burdensome. In 
addition, case-by-case decision making would require repeated exercise 
of judgment, which could lead

[[Page 91118]]

to inconsistent results and protracted disputes, interfering with the 
Congressional purpose in including this exemption. In order to ensure 
that the unreasonable delay exemption can be administered in an 
efficient manner, and to provide industry with clear and predictable 
requirements that must be met to receive this exemption, the EPA is 
finalizing the proposed approach of utilizing four set criteria to 
evaluate eligibility for the unreasonable delay exemption. As described 
in this section, the EPA has finalized certain changes to the 
individual criteria, after consideration of comments, to increase the 
accessibility and practicality of implementing this exemption.
    The EPA notes that the four criteria used to evaluate eligibility 
for the WEC unreasonable delay exemption, including the timeframe, are 
for the purpose of defining the emissions eligible for an exemption for 
the purposes of the implementation of CAA 136(f)(5) and this rulemaking 
only and are not applicable for defining an unreasonable delay outside 
of this context. The criteria in this section do not apply to the 
determination of unreasonable delay for purposes of the National 
Environmental Policy Act (NEPA), the Administrative Procedure Act 
(APA), or any other law involved in permitting processes or any other 
agency actions. In particular, the timeline criterion should not be 
considered applicable or informative to the determination of 
unreasonable delay in any context other than determining emission 
exemptions for the implementation of CAA 136(f)(5) and this rulemaking.
    The first criterion, that the facility must have emissions that 
exceed the waste emissions threshold, is based on CAA 136(f)(5), which 
states that ``charges shall not be imposed pursuant to paragraph (1) on 
emissions that exceed the waste emissions threshold specified in such 
paragraph if such emissions are caused by unreasonable delay.'' A 
straightforward reading of this language limits the exemption to 
emissions exceeding the waste emissions threshold. Since charges will 
not be imposed if emissions are below the waste emissions thresholds, 
an exemption is unnecessary in such cases and, as per the statutory 
text, not applicable. For facilities that exceed the waste emissions 
threshold, emissions eligible for the permitting delay exemption will 
be subtracted from the facility emissions that exceed the waste 
emissions threshold. The exempted emissions will not be used to reduce 
emissions totals below the threshold (i.e., the lowest possible WEC 
applicable emissions for a facility with the exemption are zero).
    The second criterion relates to responsiveness on the part of the 
production sector WEC applicable facility that is reporting emissions 
caused by a delay in gathering or transmission infrastructure: the 
entity potentially eligible for the exemption (i.e., a WEC obligated 
party's WEC applicable facility in the onshore or offshore production 
sector) cannot have contributed to the unreasonable delay in 
permitting. We proposed that neither the WEC obligated party seeking 
the exemption, nor the entity responsible for seeking the permit, may 
have contributed to the delay. Several commenters explained that the 
production facilities seeking the exemption are often separate from the 
midstream entities seeking the permit, and that the production 
companies may have no control or influence over the midstream company's 
interaction with permitting authorities. After consideration of 
comments received on this criterion, we recognize that there may be 
limited or no control by the WEC obligated party seeking the exemption 
over the responsiveness of a separate permittee. Therefore, to increase 
the accessibility of this WEC exemption, the EPA is finalizing that 
only the WEC obligated party seeking the exemption is relevant for the 
criteria of contribution to delay in the environmental permitting 
process.
    Contributions to the delay by the WEC obligated party seeking to 
exempt a portion of their emissions from one or more WEC applicable 
facilities due to an unreasonable delay will be determined based upon 
the timeliness of response to requests for additional information or 
modification of the permit application, as applicable. A 

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Indexed from Federal Register on November 18, 2024.

This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.