Document ID: EPA-R08-OAR-2015-0709-0160
Agency: epa
Document Type: Rule
Title: Federal Implementation Plan for Managing Emissions from Oil and Natural Gas Sources: Indian Country Lands within the Uintah and Ouray Indian Reservation in Utah
Posted Date: 2022-12-08T05:00Z

[Federal Register Volume 87, Number 235 (Thursday, December 8, 2022)]
[Rules and Regulations]
[Pages 75334-75386]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-24677]

[[Page 75333]]

Vol. 87

Thursday,

No. 235

December 8, 2022

Part II

Environmental Protection Agency

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40 CFR Part 49

Federal Implementation Plan for Managing Emissions From Oil and Natural 
Gas Sources on Indian Country Lands Within the Uintah and Ouray Indian 
Reservation in Utah; Final Rule

  Federal Register / Vol. 87, No. 235 / Thursday, December 8, 2022 / 
Rules and Regulations  

[[Page 75334]]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 49

[EPA-R08-OAR-2015-0709; FRL-5872.1-01-R8]
RIN 2008-AA03

Federal Implementation Plan for Managing Emissions From Oil and 
Natural Gas Sources on Indian Country Lands Within the Uintah and Ouray 
Indian Reservation in Utah

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

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SUMMARY: The Environmental Protection Agency (EPA) is promulgating a 
Federal Implementation Plan (FIP) under the Clean Air Act (CAA) and the 
EPA's implementing regulations that consists of emissions control 
requirements for existing, new, and modified oil and natural gas 
sources on Indian country lands within the Uintah and Ouray Indian 
Reservation (also referred to as the U&O Reservation) to address air 
quality in and around the Uinta Basin Ozone Nonattainment Area in 
northeast Utah. This U&O FIP establishes volatile organic compound 
(VOC) emissions control requirements for oil and natural gas production 
and processing on Indian country lands within the U&O Reservation. 
These requirements are consistent with those in place in areas within 
the Basin where the EPA has approved Utah to implement the CAA, and 
will help ensure that new development of oil and natural gas sources in 
the Basin will not interfere with attainment of the ozone National 
Ambient Air Quality Standard (NAAQS). VOC emissions control 
requirements for existing oil and natural gas sources have already been 
established in areas within the Basin where the EPA has approved Utah 
to implement the CAA, but did not exist for most sources on Indian 
country lands within the U&O Reservation. Additionally, this U&O FIP 
helps demonstrate that new development on Indian country lands within 
the U&O Reservation will not necessarily cause or contribute to an 
ozone NAAQS violation.

DATES: This final rule is effective on February 6, 2023.

ADDRESSES: The EPA has established a docket for this action under 
Docket ID No. EPA-R08-OAR-2015-0709. All documents in the docket are 
listed on the www.regulations.gov website. In some instances, we 
reference documents from the dockets for other rulemakings. For this 
final rule, we have included by reference Docket ID No. EPA-HQ-OAR-
2010-0505, Docket ID No. EPA-R08-OAR-2012-0479, Docket ID No. EPA-HQ-
OAR-2003-0076, and Docket ID No. EPA-HQ-OAR-2014-0606 into Docket ID 
No. EPA-R08-OAR-2015-0709. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
for which disclosure is restricted by statute. Certain other material, 
such as copyrighted material, will be publicly available only in hard 
copy. Publicly available docket materials are available through http://www.regulations.gov, or please contact the person identified in the FOR 
FURTHER INFORMATION CONTACT section for additional availability 
information.

FOR FURTHER INFORMATION CONTACT: Ms. Claudia Smith, U.S. EPA, Region 8, 
Air and Radiation Division, Mail Code 8ARD-IO, 1595 Wynkoop Street, 
Denver, Colorado 80202-1129, telephone number: (303) 312-6520, email 
address: [email protected].

SUPPLEMENTARY INFORMATION:

Definitions

    Act or CAA: Clean Air Act, unless the context indicates 
otherwise.
    AVO: Audio, Visual and Olfactory.
    BTU: British Thermal Unit.
    CBI: Confidential Business Information.
    CEDRI: Compliance Emissions Data Reporting Interface.
    CO: carbon monoxide.
    EPA, we, us or our: The United States Environmental Protection 
Agency.
    FBIR: Fort Berthold Indian Reservation.
    FIP: Federal Implementation Plan.
    GOR: gas-to-oil ratio.
    HAP: hazardous air pollutants.
    NAAQS: National Ambient Air Quality Standards.
    NAICS: North American Industry Classification System.
    NESHAP: National Emission Standards for Hazardous Air 
Pollutants.
    NOx: nitrogen oxides.
    NO2: nitrogen dioxide.
    NSPS: New Source Performance Standards.
    NSR: New Source Review.
    PM: particulate matter.
    PSD: Prevention of Significant Deterioration.
    PTE: potential to emit.
    RIA: Regulatory Impact Analysis.
    SCADA: Supervisory Control and Data Acquisition.
    SIP: State Implementation Plan.
    SO2: sulfur dioxide.
    TAR: Tribal Authority Rule.
    TAS: treatment in a similar manner as a state.
    TIP: Tribal Implementation Plan.
    tpy: ton(s) per year
    UDEQ: Utah Department of Environmental Quality.
    U&O Reservation or the Reservation: The Uintah & Ouray Indian 
Reservation.
    VOC: volatile organic compound(s).
    VRU: vapor recovery unit.

    Organization of this document. The information presented in this 
preamble is organized as follows:

I. Executive Summary
    A. Purpose of, and Agency Authority for, the Regulatory Action
    B. Summary of the Major Provisions of This Final Rule
    C. Costs and Benefits
II. General Information
    A. Does this action apply to me?
    B. Where can I get a copy of this document and related 
information?
    C. Judicial Review
III. Background
    A. Uintah and Ouray Indian Reservation
    B. Tribal Authority Rule
    C. Federal Indian Country Minor NSR Rule
    D. Air Quality and Attainment Status
    E. Emissions Information
    F. What is a FIP?
    G. Oil and Natural Gas Industry in Uinta Basin
IV. Summary of the Final U&O FIP
    A. Overview
    B. Introduction
    C. Provisions for Delegation of Administration to the Ute Indian 
Tribe
    D. General Provisions
    E. Emissions Inventory Requirements
    F. VOC Emissions Control Requirements
    G. Monitoring and Testing Requirements
    H. Recordkeeping Requirements
    I. Notification and Reporting Requirements
V. Significant Changes Since Proposal
    A. Final Rule Effective Date and Compliance Deadline
    B. Triennial Emissions Inventory
    C. Streamlined Construction Authorization
    D. Applicability
    E. Monitoring and Testing
    F. Recordkeeping and Reporting
VI. Summary of Significant Comments and Responses
    A. Major Comments Concerning Effective Date and Compliance 
Deadline
    B. Major Comments Concerning Regulatory Authority for Minor 
Source Streamlined Construction Authorization
    C. Major Comments Concerning Rule Applicability
    D. Major Comments Concerning Monitoring and Testing Requirements
    E. Major Comments Concerning Recordkeeping and Reporting
    F. Major Comments Concerning Cost-Benefit Analysis
    G. Other Comments of Significant Interest
VII. Impacts of This Final FIP
    A. Air Emissions Impacts
    B. Energy Impacts
    C. Compliance Costs
    D. Economic and Employment Impacts
    E. Benefits
VIII. Statutory and Executive Order Reviews
    A. Executive Order 12866: Regulatory Planning and Review and 
Executive Order 13563: Improving Regulation and Regulatory Review
    B. Paperwork Reduction Act (PRA)
    C. Regulatory Flexibility Act (RFA)
    D. Unfunded Mandates Reform Act (UMRA)

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    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 Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use
    I. National Technology Transfer and Advancement Act (NTTAA)
    J. Executive Order 12898: Federal Actions To Address 
Environmental Justice in Minority Populations and Low-Income 
Populations
    K. Congressional Review Act (CRA)

I. Executive Summary

A. Purpose of, and Agency Authority for, the Regulatory Action

    We are finalizing this action using our authority under sections 
301(a) and 301(d)(4) of the CAA and 40 CFR 49.11 to promulgate FIP 
provisions that are necessary and appropriate to protect air quality on 
the Indian country lands within the U&O Reservation and in nearby 
communities. The purpose of this U&O FIP is threefold.
    First, and primarily, this U&O FIP will improve air quality on the 
U&O Reservation by addressing emissions from oil and natural gas 
production and natural gas processing activities on Indian country 
lands that contribute to the winter ozone problem in the physiographic 
region known as the Uinta Basin,\1\ within which the U&O Reservation is 
located, and where ambient ozone levels have exceeded both the 2008 and 
the 2015 ozone NAAQS.\2\ In 2018, the EPA designated portions of the 
Uinta Basin, including large portions of the Indian country lands 
within the U&O Reservation, as a Marginal nonattainment area for the 
2015 ozone NAAQS.\3\
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    \1\ For this rulemaking, the EPA defines the geographic scope of 
the Uinta Basin to be consistent with the Uinta Basin 2014 Air 
Agencies Oil and Gas Emissions Inventory (herein after referred to 
as the 2014 Uinta Basin Emissions Inventory), which encompasses 
Duchesne and Uintah counties. The 2014 Uinta Basin Emissions 
Inventory is available at: https://deq.utah.gov/air-quality/2014-air-agencies-oil-and-gas-emissions-inventory-uinta-basin, accessed 
Mar. 11, 2022.
    \2\ The 2015 ozone NAAQS is 70 parts per billion (ppb) (40 CFR 
50.19). The 2008 ozone NAAQS is 75 ppb. Historical ozone NAAQS 
information is available at: https://www.epa.gov/ozone-pollution/table-historical-ozone-national-ambient-air-quality-standards-naaqs, 
accessed Mar. 11, 2022.
    \3\ On April 30, 2018, the EPA designated all of the Uinta Basin 
below a contiguous external perimeter of 6,250 ft. in elevation as a 
Marginal nonattainment area under the 2015 ozone NAAQS (83 FR 
25776). This includes areas of the Basin where the EPA has approved 
the UDEQ to implement the CAA and Indian country lands within the 
U&O Reservation (where the EPA is promulgating this FIP). For more 
information, see https://www.epa.gov/ozone-designations/additional-designations-2015-ozone-standards, accessed Mar. 11, 2022.
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    Air quality ozone monitoring data from the Uinta Basin in the years 
2018, 2019 and 2020 indicates that the three-year average of the fourth 
maximum ambient air concentration measurements is 76 ppb, which 
violates the 2015 ozone NAAQS of 70 ppb. On April 13, 2022, the EPA 
proposed to grant a 1-year attainment date extension for the Uinta 
Basin Ozone Nonattainment area.\4\ The proposal explains that 
preliminary 2021 ozone monitoring data indicate that the area may not 
attain the 2015 ozone NAAQS by the proposed extended attainment date of 
August 3, 2022, but that the area could meet the air quality criteria 
for a second 1-year extension. The Uinta Basin area's preliminary 2019-
2021 design value was 78 ppb and the preliminary 2021 fourth highest 
daily maximum 8-hour concentration value was 72 ppb. To qualify for a 
second 1-year extension, an area's fourth highest daily maximum 8-hour 
value, averaged over both the original attainment year and the first 
extension year, must be 70 ppb or less. If the preliminary 2021 ozone 
data are certified, then the fourth highest daily maximum 8-hour value, 
averaged over 2020 and 2021, would be 69 ppb.\5\
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    \4\ See 87 FR 21842 (Apr. 13, 2022), available at https://www.govinfo.gov/content/pkg/FR-2022-04-13/pdf/2022-07513.pdf, 
accessed Apr. 29, 2022.
    \5\ Additional details on the proposed extension of the 
attainment date are discussed in Section III.D. of this preamble.
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    The winter-time ozone formation in the Uinta Basin is caused by 
emissions of VOC and NOX reacting in the presence of 
sunlight and widespread snow cover during temperature inversion 
conditions to form ground-level ozone at levels that exceed the ozone 
NAAQS and are therefore detrimental to public health. The main sources 
in the Basin responsible for VOC and NOX emissions are 
existing oil and natural gas facilities. As explained in section III.D. 
(Air Quality and Attainment Status), most available information 
indicates that winter ozone formation in the Basin is driven by local 
emissions and is sensitive to changes in VOC emissions. There is 
greater uncertainty as to the sensitivity to changes in NOX 
emissions. As explained in section III.E. (Emissions Information), 
available information indicates that 97 percent of anthropogenic VOC 
emissions in the Basin are from existing oil and natural gas activity, 
and that about 89 percent of those emissions are from existing sources 
on the Indian country lands within the U&O Reservation and in the 
nonattainment area. Before this rulemaking, VOC emissions control 
requirements for existing oil and natural gas sources existed in areas 
of the Basin where the EPA has approved the UDEQ to implement the CAA 
but did not exist in Indian country lands within the U&O Reservation. 
As explained in this final rulemaking and in the supporting information 
in the record, VOC control requirements are necessary to protect air 
quality on Indian country lands within the U&O Reservation.
    The CAA does not require an attainment plan for Marginal ozone 
nonattainment areas.\6\ Accordingly, this U&O FIP is not intended to 
bring the Uinta Basin back into attainment with the ozone standard. 
However, we do anticipate that this U&O FIP will make a meaningful 
improvement in air quality through the reduction of VOC, an ozone 
precursor, while also allowing continued construction authorization of 
new development in the Basin and the positive economic impact that this 
development brings to the Tribe.
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    \6\ On March 9, 2018 (83 FR 10376), the EPA published the 
Classifications Rule, which established how the statutory 
classifications apply for the 2015 ozone NAAQS, including the air 
quality thresholds for each classification category. Based on this 
rule, each area with a 3-year design value of 71 ppb to 81 ppb, 
based on monitoring data from 2014-2016, was to be classified as a 
Marginal nonattainment area. The requirements for Marginal ozone 
nonattainment areas are specified in CAA Title I, Part D, subpart 2 
(see 42 U.S.C. 7511a(a)) and include: (1) Comprehensive, accurate, 
current inventory of actual ozone precursor emissions from all 
sources; (2) Corrections, if necessary, to existing implementation 
plans to meet specific requirements, including for nonattainment 
major source permitting; (3) Triennial emissions inventory updates; 
and (4) General offset requirements for new and modified major 
sources.
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    This final action is driven by the EPA's authority and 
responsibility to protect air quality in Indian country under sections 
301(a) and 301(d)(4) of the CAA and 40 CFR 49.11. Regarding 
preconstruction review of proposed new or modified sources \7\ of air 
pollution in nonattainment areas in Indian country, the reviewing 
authority must demonstrate that the minor source or modification would 
not cause or contribute to a NAAQS violation in the nonattainment area 
(see 40 CFR 49.155(a)(7)(ii)) \8\ and that preconstruction review of 
new major stationary sources and major

[[Page 75336]]

modifications to existing major stationary sources located in an area 
designated as nonattainment for any NAAQS would provide a net air 
quality benefit in the nonattainment area (see 40 CFR 49.169(b)(4)). 
While the CAA Indian country nonattainment permit program for major 
sources specifies offset requirements as the method to make such a 
demonstration (see 40 CFR 49.169(b)(3)), the CAA Indian country 
nonattainment permit program for minor sources is not prescriptive as 
to how to make such a demonstration. The requirements of this U&O FIP 
will result in VOC emission reductions from existing sources,\9\ 
thereby improving air quality, and will also allow the EPA to rely on 
those reductions to meet the NAAQS protection requirements for 
continued construction authorization of new or modified minor sources 
in the nonattainment area.
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    \7\ 40 CFR 49.152 defines ``minor modification at a major 
source,'' ``minor source,'' ``modification,'' ``synthetic minor 
source,'' and ``true minor source,'' all of which are subject to the 
permitting requirements of the Federal Minor New Source Review 
Program in Indian Country, at 40 CFR 49.151-49.165.
    \8\ 40 CFR 49.155 applies to your permit if you are subject to 
this program under 40 CFR 49.153(a) for construction of a new minor 
source, synthetic minor source or a modification at an existing 
source.
    \9\ Existing sources are sources that commence construction 
before the effective date of this FIP, per 40 CFR 49.4169(c).
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    This U&O FIP focuses on VOC emission reductions because 
improvements in winter ozone levels in the Basin are most likely to 
come from VOC emissions reductions from existing oil and natural gas 
sources.\10\ Further, after a careful analysis of initial emissions 
data provided by industry and later updated using information obtained 
from two studies in the 2017 Uinta Basin Oil and Gas Emissions 
Inventory Update (referred to herein as the UBEI2017-Update),\11\ we 
determined that most of the existing oil and natural gas sources on the 
Indian country lands within the U&O Reservation are largely 
uncontrolled for VOC and other emissions. Therefore, in developing this 
rule, we concentrated on determining the most effective control 
requirements to reduce VOC emissions from oil and natural gas sources 
to address the winter ozone exceedances. This is not to say that 
reductions in NOX would not be beneficial in winter months. 
The EPA may decide to focus on NOX reductions in future 
rulemakings if additional action is required to address air quality 
impacts from ozone pollution in the Basin.
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    \10\ See Uinta Basin Ozone Studies (field studies conducted in 
the Basin from 2011 to 2014), available at https://deq.utah.gov/air-quality/uinta-basin-ozone-studies-ubos, accessed Mar. 11, 2022. The 
RIA for this rule contains detailed discussion of the studies and 
can be viewed in the docket for this rulemaking (Docket ID No. EPA-
R08-OAR-2015-0709).
    \11\ 2017 Uinta Basin Oil and Natural Gas Emissions Inventory 
Update (UBEI2017-Update). The inventory and supporting analysis can 
be viewed in the docket for this rule, Microsoft Excel spreadsheet 
titled, ``UO FIP cost and emissions analysis.xlsx'' (Docket ID No. 
EPA-R08-OAR-2015-0709). The inventory covers sources in Uintah and 
Duchesne Counties. The UDEQ submitted an earlier version of the 2017 
inventory to the 2017 NEI and plans to submit the updated emissions 
at a future date. The UDEQ, the EPA, and the Ute Indian Tribe 
updated storage vessel, pneumatic controller, pneumatic pump, 
fugitive, gas well liquid unloading, blowdowns and pigging and 
oilfield wastewater emissions using updated emissions factors 
obtained from the Uinta Basin Composition Study and the acquisition 
of about 200 of oilfield wastewater (produced water) samples. The 
studies that updated the emissions factors are described in two 
White Papers available in the docket, ``UINTA BASIN VOC COMPOSITION 
STUDY IMPACTS ON THE 2017 OIL AND GAS EMISSIONS INVENTORY November 
2020--Revised March 2021--White Paper'' (``DAQ-2021-004302.pdf''), 
and ``PRODUCED WATER DISPOSAL FACILITY EMISSION FACTORS & THEIR 
IMPACT ON THE 2017 OIL AND GAS EMISSIONS INVENTORY November 2020--
Revised April 2021--White Paper'' (``DAQ-2020-016022.pdf'').
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    Second, the control requirements being finalized are intended to be 
the same as or consistent with the requirements applicable to similar 
sources in areas of the Basin where the EPA has approved the UDEQ to 
implement the CAA, to promote a more consistent regulatory environment 
across the Basin. Where we are regulating existing equipment or 
activities that are also covered by EPA standards for the oil and 
natural gas source category, but do not meet the applicability criteria 
of those standards, we also strove for consistency with those EPA 
standards.
    Finally, given the number of oil and natural gas projects in the 
Basin that are already approved or are in the federal review and 
approval process through evaluations conducted under the National 
Environmental Policy Act (NEPA) by other federal agencies,\12\ in the 
coming years the EPA could receive a large number of applications for 
authorization to construct new and modified synthetic minor oil and 
natural gas sources on Indian country lands within the U&O Reservation, 
as well as registrations of new and modified true minor oil and natural 
gas sources on Indian country lands within the U&O Reservation under 
the Federal Implementation Plan for True Minor Sources in Indian 
Country in the Oil and Natural Gas Production and Natural Gas 
Processing Segments of the Oil and Natural Gas Sector (codified at 40 
CFR part 49, subpart C, 40 CFR 49.101-49.105) \13\ (National O&NG FIP). 
In addition to providing a streamlined construction authorization 
mechanism to new and modified true minor oil and natural gas 
sources,\14\ the National O&NG FIP requires compliance with a suite of 
eight federal oil and natural gas source category emissions standards 
\15\ for new and modified sources, as applicable. In 2019, the EPA 
extended the National O&NG FIP's streamlined construction authorization 
mechanism for true minor oil and natural gas sources in Indian country 
to the portions of the U&O Reservation within the Uinta Basin ozone 
nonattainment area.\16\ We are relying on the existing source VOC 
emissions reductions that will be achieved under this U&O FIP to ensure 
that the limited extension of the National O&NG FIP to the Indian 
country portion of the Uinta Basin Ozone Nonattainment Area will not 
harm the area's ability to attain the NAAQS. This is described in 
greater detail in Sections V.C. and VI.B.
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    \12\ Spreadsheet titled, ``Uinta Basin OG NEPA Evaluations 
9.11.19.pdf,'' available in the Docket for this rulemaking (Docket 
ID No. EPA-R08-OAR-2015-0709), lists oil and natural gas production 
projects in the Uinta Basin that have been subject to evaluation 
under NEPA.
    \13\ Final Rule: Federal Implementation Plan for True Minor 
Sources in Indian Country in the Oil and Natural Gas Production and 
Natural Gas Processing Segments of the Oil and Natural Gas Sector; 
Amendments to the Federal Minor New Source Review Program in Indian 
Country to Address Requirements for True Minor Sources in the Oil 
and Natural Gas Sector, 81 FR 35944 (June 3, 2016); docket No. EPA-
HQ-OAR-2014-0606, available at https://www.regulations.gov, accessed 
Mar. 11, 2022.
    \14\ As defined in the Federal Minor New Source Review Program 
in Indian Country at 40 CFR 49.152, a true minor source is a source 
that emits or has the potential to emit regulated NSR pollutants in 
amounts that are less than the major source thresholds in 40 CFR 
49.167 (federal preconstruction permit program for major sources in 
nonattainment areas in Indian country) or 40 CFR 52.21 (federal 
preconstruction permit program for major sources in attainment/
unclassifiable areas), as applicable, but equal to or greater than 
the minor NSR thresholds in 40 CFR 49.153 (federal preconstruction 
permit program for minor sources in Indian country), without the 
need to take an enforceable restriction to reduce its potential to 
emit to such levels.
    \15\ See 40 CFR 49.105. The National O&NG FIP specifies that 
sources must comply with, as applicable, the following standards: 
NESHAP 40 CFR part 63, subpart DDDDD; NESHAP 40 CFR part 63, subpart 
ZZZZ; NSPS IIII 40 CFR part 60, subpart IIII; NSPS 40 CFR part 60, 
subpart JJJJ; NSPS 40 CFR part 60, subpart Kb; NSPS 40 CFR part 60, 
subpart OOOOa; NESHAP 40 CFR part 63, subpart HH; and NSPS 40 CFR 
part 60, subpart KKKK.
    \16\ Final Rule: Amendments to Federal Implementation Plan for 
Managing Air Emissions from True Minor Sources in Indian Country in 
the Oil and Natural Gas Production and Natural Gas Processing 
Segments of the Oil and Natural Gas Sector, 84 FR 21240 (May 14, 
2019); Docket No. EPA-HQ-OAR-2014-0606, available at https://www.regulations.gov, accessed Mar. 11, 2022.
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    In the preamble to the final National O&NG FIP published on June 3, 
2016, the EPA stated that the most appropriate means for addressing air 
quality concerns on specific reservations due to impacts from oil and 
natural gas activity is through area- or reservation-specific FIPs, not 
through the National O&NG FIP. Further, we stated that such FIPs may 
need to include requirements for existing, new, and modified sources

[[Page 75337]]

beyond those in the National O&NG FIP.\17\ Consistent with that 
approach, new and modified true minor oil and natural gas sources on 
Indian country lands within the U&O Reservation that would use the 
National O&NG FIP for construction authorization may have to comply 
with additional requirements for certain equipment or activities not 
covered by the eight federal standards.\18\
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    \17\ See 81 FR 35964, 35968.
    \18\ As described in detail later, this action exempts certain 
equipment and activities that are subject to the emissions control 
requirements of a subset of the eight federal standards in the 
National O&NG FIP from having to comply with the emissions control 
requirements in this action for the same equipment and activities. 
Other types of equipment, such as small and remote glycol 
dehydrators and storage vessels with potential emissions <= 6 tpy 
VOC, are not regulated by those federal standards but are regulated 
in this action.
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    In summary, this U&O FIP is intended to: (1) improve air quality on 
Indian country lands within the U&O Reservation; (2) promote a more 
consistent regulatory environment across the Basin; and (3) ensure that 
emissions reductions will be achieved that will ensure that new 
development, under both source-specific minor source permitting and the 
National O&NG FIP's streamlined construction authorization mechanism 
for new or modified true minor oil and natural gas sources, will not 
interfere with attainment of the NAAQS.

B. Summary of the Major Provisions of This Final Rule

    The following is a summary of each key requirement in the final 
action. As explained earlier, the final FIP was developed to maximize 
air quality improvement, in a manner that promotes a more consistent 
regulatory environment across all areas in the Uinta Basin, such that 
covered sources within Indian country on the U&O Reservation will be 
regulated in a manner similar to how they would be regulated if located 
in areas in the Basin where EPA has approved the UDEQ to implement the 
CAA. We attempted to achieve this goal by providing as much consistency 
as possible in the FIP with current federal standards for the oil and 
natural gas industry, including NSPS 40 CFR part 60, subparts OOOO and 
OOOOa (NSPS OOOO and OOOOa); NESHAP 40 CFR part 63, subpart HH (NESHAP 
HH); and the Control Techniques Guidelines for reducing smog-forming 
VOC emissions from existing oil and natural gas equipment and processes 
in certain states and areas with smog problems (Oil and Gas CTG).\19\ 
The provisions in the final U&O FIP are informed by EPA's evaluation of 
these several applicable federal authorities as well as an evaluation 
of current UDEQ requirements that apply in the Uinta Basin outside of 
the Indian country lands within the U&O Reservation (areas of the Basin 
where the EPA has approved the UDEQ to implement the CAA). Where the 
EPA identified differences in these authorities, we considered the 
facts specific to the U&O Reservation in conjunction with the goals of 
the FIP to decide what to include in the final FIP. Our analysis was 
somewhat complicated by a recent joint resolution under the 
Congressional Review Act (CRA),\20\ which disapproved policy revisions 
made in 2020 to NSPS OOOO and OOOOa \21\ and thereby reinstated 
standards from the 2012 NSPS OOOO and 2016 NSPS OOOOa.\22\ The 
resolution did not, however, disapprove technical revisions made in a 
separate rulemaking in 2020 to NSPS OOOOa,\23\ which remain in place 
today. These two events resulted in regulatory inconsistencies between 
the NSPS OOOOa methane and VOC standards.\24\ Further, the Oil and Gas 
CTG in some respects includes recommendations that do not match exactly 
with the requirements in the 2016 NSPS OOOOa methane standards.\25\ In 
addition, the EPA recently proposed a rule to regulate methane and VOC 
emissions from existing, new, and modified sources in the oil and 
natural gas industry that would revise existing standards under NSPS 
OOOOa, establish new VOC and methane standards for emissions sources 
not previously covered by NSPS OOOOa, and establish methane emissions 
guidelines for existing sources (Oil and Natural Gas Sector Climate 
Review Proposed Rule).\26\ As part of that proposed rule, the EPA 
addressed the inconsistencies between the methane and VOC standards in 
NSPS OOOOa by proposing to repeal certain NSPS OOOOa amendments that 
were made in the 2020 Technical Rule.\27\ Despite these complications, 
EPA has focused its analysis for this U&O FIP on the currently 
applicable state and federal requirements and guidance.
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    \19\ Available at https://www.epa.gov/controlling-air-pollution-oil-and-natural-gas-industry/2016-control-techniques-guidelines-oil-and, accessed Mar. 11, 2022. CTGs are not regulations and do not 
impose legal requirements directly on pollution sources; rather, 
they provide recommendations for state and local air agencies to 
consider as they determine what emissions limits to apply to covered 
sources in their jurisdictions in order to meet RACT requirements.
    \20\ 5 U.S.C. 801-808.
    \21\ 85 FR 57018 (Sept. 14, 2020) (``2020 Policy Rule''; as of 
June 30, 2021, no longer in effect due to CRA disapproval).
    \22\ Public Law 17-23 (June 30, 2021) (resolving that Congress 
``disapproves the [2020 Policy Rule] . . . and such rule shall have 
no force or effect'').
    \23\ 85 FR 57398 (Sept. 15, 2020) (``2020 Technical Rule'').
    \24\ For requirements that currently apply, see Congressional 
Review Act Resolution to Disapprove EPA's 2020 Oil and Gas Policy 
Rule. Questions and Answers. U.S. Environmental Protections Agency. 
Office of Air Quality Planning and Standards. June 30, 2021, 
available at https://www.epa.gov/system/files/documents/2021-07/qa_cra_for_2020_oil_and_gas_policy_rule.6.30.2021.pdf, accessed Mar. 
11, 2022.
    \25\ For example, while the CTG recommends exempting low-
production well sites from monitoring fugitive VOC emissions, the 
current OOOOa methane standards do not have such exemption.
    \26\ Proposed Rule. Standards of Performance for New, 
Reconstructed, and Modified Sources and Emissions Guidelines for 
Existing Sources: Oil and Natural Gas Sector Climate Review. See 86 
FR 63110, November 15, 2021, available at https://www.regulations.gov (Document ID No. EPA-HQ-OAR-2021-0317-0001), 
accessed Mar. 14, 2022. On the same day that this action is being 
signed, the Administrator has also signed a supplemental notice 
which proposes to update and expand on the 2021 Climate Review 
proposal. See Supplemental notice of proposed rulemaking. Standards 
of Performance for New, Reconstructed, and Modified Sources and 
Emissions Guidelines for Existing Sources: Oil and Natural Gas 
Sector Climate Review. Signed by the EPA Administrator on November 
8, 2022, available at https://www.epa.gov/controlling-air-pollution-oil-and-natural-gas-industry/epa-issues-supplemental-proposal-reduce. Today's action discusses certain aspects of the 2021 Climate 
Review proposal, but does not attempt to describe the 2022 
supplemental proposal, in light of the concurrent signature of the 
latter action.
    \27\ For example, the EPA is proposing to repeal the 2020 
Technical Rule amendments that exempted low-production well sites 
from monitoring fugitive VOC emissions, and those that changed 
fugitive VOC emissions monitoring requirements at gathering and 
boosting compressor stations from quarterly to semi-annually. The 
proposed rule would also establish an LDAR applicability threshold 
for existing, new, and modified oil and natural gas well sites of 3 
tpy site-wide methane fugitive emissions (and co-proposed an 
alternative threshold of 8 tpy site-wide methane fugitive 
emissions).
---------------------------------------------------------------------------

    That said, we acknowledge that the Agency's thinking on these 
issues has evolved since we issued NSPS OOOOa and the CTG in 2016. 
Among other developments, new information and analysis have been 
presented in the Oil and Natural Gas Sector Climate Review Proposed 
Rule that will likely be relevant for reducing emissions on the U&O 
Reservation. When the EPA proposed this FIP, however, the Agency had 
not yet proposed that other rule, and the Climate Review Rule is still 
being developed. In the interest of moving quickly to achieve emissions 
reductions, the EPA finds that it is necessary and appropriate to 
finalize this FIP now. Our assessment of new, potentially relevant 
information will continue in the context of the Oil and Natural Gas 
Sector Climate Review Rule. If we finalize that proposed national rule 
in the future, its

[[Page 75338]]

requirements will apply directly to covered sources. As to sources not 
covered by a final national rule, the EPA may find it necessary or 
appropriate to revisit this final action in the future and revise this 
FIP based on information evaluated in issuance of a final Climate 
Review Rule, providing public notice of the opportunity for review and 
comment on any such revisions as part of the required rulemaking 
process. Also, if the Uinta Basin Ozone Nonattainment Area's Marginal 
classification is reclassified (``bumped up'') to a Moderate 
nonattainment classification, or if air quality concerns otherwise 
warrant, we may conclude that further rulemaking is necessary or 
appropriate.
    General applicability: The final rule applies to owners or 
operators of oil and natural gas sources that produce oil and natural 
gas or process natural gas, that are located on Indian country lands 
within the U&O Reservation, and that meet the applicability criteria 
specified for each set of requirements. The final rule is effective 60 
days after the date of publication in the Federal Register. For new and 
modified sources that construct on or after the effective date of this 
final rule, compliance is required upon startup. Compliance for 
existing sources that commence construction before the effective date 
of the final rule is required no later than 12 months after the 
effective date of the final rule. The final rule allows owners or 
operators to request approval, on a case-specific basis and prior to 
the compliance deadline, of an extension of the compliance deadline for 
existing sources.
    Delegation of authority of administration to the Tribe: The final 
rule contains provisions for the Ute Indian Tribe to request delegation 
to assist the EPA with administration of the federal rule and the 
process by which the EPA may delegate such authority.
    Emissions inventory: The final rule requires that each owner and 
operator of affected oil and natural gas sources with the potential to 
emit one or more NSR-regulated pollutants at levels greater than or 
equal to 1 tpy must submit an inventory of actual emissions for each 
emissions unit to the EPA every three years that covers emissions from 
the previous calendar year (OMB Control No. 2008--New (2539.02)). The 
emissions inventory serves the purpose of the triennial collection of 
comprehensive Uinta Basin oil and natural gas emissions by the EPA, the 
Ute Indian Tribe, and UDEQ, and corresponds with the years that 
emissions inventory information is collected for the EPA National 
Emissions Inventory (NEI).\28\
---------------------------------------------------------------------------

    \28\ Information available at https://www.epa.gov/air-emissions-inventories/national-emissions-inventory-nei, accessed Mar. 11, 
2022.
---------------------------------------------------------------------------

    Storage vessels, glycol dehydrators and pneumatic pumps: The final 
rule contains federally enforceable requirements for owners and 
operators of each existing, new, and modified oil and natural gas 
source that has the potential to emit 4 tons per year of VOC or more 
from the collection of all storage vessels, glycol dehydrators and 
pneumatic pumps. The rule requires that each affected oil and natural 
gas source collect and route all VOC emissions from each storage 
vessels, glycol dehydrator and pneumatic pump through a closed-vent 
system to an operating system designed to recover 100 percent of the 
emissions and recycle them for use in a process unit or incorporate 
them into a product, or route them to a flare or other control device 
designed and operated to achieve at least 95.0 percent continuous VOC 
emissions control efficiency.
    Covers and closed-vent systems: The final rule requires owners and 
operators of affected existing, new, and modified oil and natural gas 
sources that are required to control VOC emissions from the collection 
of all storage vessels, glycol dehydrators and pneumatic pumps, to: use 
covers on any affected storage vessels that ensure flashing, working, 
standing, and breathing losses are efficiently captured; and to capture 
and route emissions from any affected storage vessel, glycol dehydrator 
and pneumatic pump through closed-vent systems with equipment that 
ensures all VOC emissions make it to the respective process or VOC 
emissions control device. The rule contains construction and 
operational requirements that are intended to provide legal and 
practicable enforceability to ensure that all captured emissions are 
routed to their intended destination with no detectable emissions.
    Control devices: The final rule contains legally and practicably 
enforceable construction, work practice, and operational requirements 
for each required flare or enclosed combustor. Each flare must be 
designed and operated according to the requirements of 40 CFR 60.18(b). 
Each enclosed combustor must be designed and operated to reduce the 
mass content of the VOC in the natural gas routed to it by at least 
95.0 percent on a continuous basis, and must be tested by the 
manufacturer, owner, or operator in accordance with the requirements of 
40 CFR part 60 subparts OOOO or OOOOa. Flares and enclosed combustors 
must be operated within specific parameters to ensure the effective 
control of VOC emissions (including requirements to be equipped and 
operated with a liquid knockout system, a continuously burning pilot 
flame or electronically controlled automatic ignition device, and a 
monitoring system for continuous monitoring and recording of 
operational parameters; maintained in a leak-free condition; and 
operated with no visible smoke emissions).
    Fugitive emissions: The final rule requires implementation of a 
semi-annual leak detection and repair (LDAR) program for the collection 
of fugitive emissions components at each oil and natural gas source 
with facility-wide potential emissions from the collection of all 
storage vessels, glycol dehydrators and pneumatic pumps equal to or 
greater than 4 tpy VOC, plus any additional well sites with production 
of more than 15 barrels of oil equivalent (boe) per day.\29\ The final 
rule also contains provisions allowing for the use of alternative 
methods of leak detection, provided the method is approved by the EPA.
---------------------------------------------------------------------------

    \29\ As explained earlier, this FIP has been developed to 
maximize air quality improvements in a manner that promotes a more 
consistent regulatory environment across jurisdictional boundaries. 
We evaluated several authorities to further these goals with respect 
to fugitive emissions monitoring. The Oil and Gas CTG does not 
recommend that well sites with production of less than 15 boe per 
day (``low-production'' well sites) monitor fugitive emissions. 
Using a different measure, the UDEQ applies LDAR requirements only 
at well sites where the total actual uncontrolled VOC emissions from 
the collection of storage vessels and glycol dehydrators is greater 
than or equal to 4 tpy VOC (unless the well site is subject to the 
LDAR requirements of NSPS OOOOa, in which case the operator would 
comply with NSPS OOOOa).And as explained above, the NSPS OOOOa 
requirements may be changed by the Oil and Natural Gas Sector 
Climate Review Proposed Rule, which proposes to repeal some of the 
amendments that were made to NSPS OOOOa as part of the 2020 
Technical Rule. Among the provisions proposed for repeal are those 
that exempted low-production well sites from fugitive emissions 
monitoring and those that changed fugitive VOC monitoring 
requirements at gathering and boosting compressor stations from 
quarterly to semi-annually. Those fugitive VOC standards are still 
in place today, and are in contrast to the 2016 fugitive methane 
standards that were reinstated by the CRA disapproval of the 2020 
Policy Rule. The proposed rule also would require quarterly 
monitoring at oil and natural gas well sites of 3 tpy site-wide 
methane fugitive emissions (and co-proposes semi-annual monitoring 
for those with site-wide methane fugitive emissions between 3 and 8 
tpy, with quarterly monitoring for those with site-wide methane 
fugitive emissions above 8 tpy).
---------------------------------------------------------------------------

    VOC emissions control requirements for all sources: The final rule 
contains VOC control requirements for all existing, new, and modified 
oil and natural gas sources, regardless of source-wide or emission unit 
specific

[[Page 75339]]

applicability criteria. These requirements include: (1) tank trucks 
transporting crude oil, condensate, intermediate hydrocarbon liquids or 
produced water must be loaded using bottom filling or submerged fill 
pipes; (2) all existing pneumatic controllers must meet the pneumatic 
controller standards in NSPS OOOO; and (3) all existing enclosed 
combustors and flares present and operating at sources on a voluntary 
basis must be equipped with an electronically controlled automatic 
ignition device.
    Monitoring, recordkeeping, notification and reporting: This U&O FIP 
requires owners or operators to conduct source monitoring sufficient to 
demonstrate compliance with the FIP's VOC emission reduction and 
control requirements, including: (1) monthly inspections of each cover 
and closed-vent system to ensure proper condition and functioning and 
to identify defects that can result in air emissions, correcting or 
repairing any defects identified within 30 days of identification; and 
(2) monthly inspections of each VOC emissions control device to ensure 
proper functioning whenever an operator is on site, at least once per 
calendar month, and responding to any indication of malfunction (e.g., 
pilot flame failure, visible emissions) as soon as practicably and 
safely possible after discovery.

C. Costs and Benefits

    The EPA has projected the compliance costs, emissions reductions, 
and benefits that may result from the U&O FIP. The discussion of 
projected costs and benefits is presented in detail in the Regulatory 
Impacts Analysis (RIA) accompanying this final rule.\30\ The RIA 
focuses on the elements of the final rule--the provisions related to 
VOC emissions control requirements--that are likely to result in 
quantifiable costs, emissions changes, and benefits compared to a 
baseline that includes operator-reported emissions from oil and natural 
gas sources in the Uinta Basin for calendar year 2017, specifically on 
the Indian country lands within the U&O Reservation. We estimated the 
effects of the final rule for all sources that are conservatively 
projected \31\ to be subject to compliance activities under this action 
for the analysis years 2023 through 2032. The RIA also presents the 
present value (PV) and equivalent annualized value (EAV) of costs, 
benefits and net benefits of this action in 2016 dollars.
---------------------------------------------------------------------------

    \30\ Available in the docket for this rulemaking (Docket ID No. 
EPA-R08-OAR-2015-0709).
    \31\ As explained throughout this preamble, and in the RIA, this 
quantitative projection does not account for those sources that may 
be exempt from certain requirements of the rule because they are 
subject to equivalent requirements in NSPS OOOO or OOOOa, or in 
NESHAP HH. Therefore, it is likely that costs for those sources will 
be less for certain activities than for sources subject to 
requirements of the FIP.
---------------------------------------------------------------------------

    A summary of the key results of this final rule is presented in 
Table 1. Table 1 presents the PV and EAV, estimated using discount 
rates of 7 and 3 percent, of the benefits, costs and net benefits, as 
well as the change in emissions under the final rule. The monetized net 
benefits are the benefits (emissions reductions) minus the costs 
(annualized compliance costs). These results present an incomplete 
overview of the effects of the final FIP, because categories of 
benefits--including benefits from reducing other types of air 
pollutants--were not monetized and are therefore not reflected in Table 
1.

       Table 1--Benefits, Costs, Net Benefits and Emissions Reductions of the Final Rule 2023 Through 2032
                               [Dollar estimates in millions of 2016 dollars] \a\
----------------------------------------------------------------------------------------------------------------
                                                                    Equivalent                      Equivalent
                                                   Present value   annual value    Present value   annual value
----------------------------------------------------------------------------------------------------------------
                                             3 Percent Discount Rate
----------------------------------------------------------------------------------------------------------------
Benefits \b\....................................          $1,000            $120          $1,000            $120
----------------------------------------------------------------------------------------------------------------
                                                      3 Percent Discount Rate
                                                      7 Percent Discount Rate
                                                 ---------------------------------------------------------------
Net Compliance Costs............................             610              72             560              81
    Compliance Costs............................             630              74             580              83
    Product Recovery............................              20               2              20               2
Net Benefits....................................             390              48             440              39
----------------------------------------------------------------------------------------------------------------
Non-Monetized Benefits \c\......................  Ozone health and climate benefits from reducing 23,000 tons of
                                                  VOC/year and ozone health benefits from 59,000 tons of methane/
                                                  year from 2023 to 2032.
                                                 ---------------------------------------------------------------
                                                   Ozone health and PM2.5 benefits from reducing 23,000 tons of
                                                                    VOC/year from 2023 to 2032.
                                                 ---------------------------------------------------------------
                                                  HAP benefits from reducing 3,100 tons of HAP/year from 2023 to
                                                  2032 (including 570 tons of benzene, 970 tons of toluene, 130
                                                  tons of ethylbenzene, 620 tons of xylenes and 770 tons of n-
                                                  hexane per year).
                                                 ---------------------------------------------------------------
                                                  Visibility benefits.
                                                 ---------------------------------------------------------------
                                                  Reduced vegetation effects from exposure to ozone.
----------------------------------------------------------------------------------------------------------------
\a\ Values rounded to two significant figures. Totals may not appear to add correctly due to rounding.

[[Page 75340]]

 
\b\ Monetized benefits of the final rule include climate benefits associated with reductions in methane
  emissions and are calculated using four different estimates of the social cost of methane (SC-CH4) (model
  average at 2.5 percent, 3 percent, and 5 percent discount rates: 95th percentile at 3 percent discount rate).
  For the presentational purposes of this table, we show the benefits associated with the average SC-CH4 at a 3
  percent discount rate, but the Agency does not have a single central SC-CH4 point estimate. We emphasize the
  importance and value of considering the benefits calculated using all four SC-CH4 estimates; the present value
  (and equivalent annual value) of the additional benefit estimates (millions of 2016$) ranges from $480 to
  $2,700 ($62 to $310) over 2023 to 2032 for the final rule. Please see Table 6-6 of the RIA for the full range
  of SC-CH4 estimates. As discussed in Section 6.5 of the RIA, a consideration of climate benefits calculated
  using discount rates below 3 percent, including 2 percent and lower, are also warranted when discounting
  intergenerational impacts. All net benefits are calculated using climate benefits discounted at 3 percent.
\c\ There are important unquantified health and welfare benefits associated with reductions in other air
  pollutants, which are discussed in Chapter 6 of the RIA.

    This final rule is expected to result in net benefits (emissions 
reductions) for human health and the environment in the Uinta Basin. 
The estimated benefits include the monetized climate effects of the 
projected reduction in methane emissions under the final rule resulting 
from the targeted reduction of VOC emissions. The PV of these climate-
related benefits (emissions reductions), discounted at a 3-percent 
rate, is estimated to be about $1 billion, with an EAV of about $120 
million (Table 1).
    In addition to directly controlling VOC emissions, which are 
expected to lower ozone concentrations in the Uinta Basin, this action 
is expected to lower HAP emissions and the formation of secondary 
particulate matter with a diameter of 2.5 micrometers or less 
(PM2.5) even though those pollutants are not directly 
regulated under this action. While the EPA expects that the VOC 
emissions reductions will improve air quality and have beneficial 
health and welfare effects associated with reduced exposure to ozone, 
PM2.5, and HAP, we did not quantify those effects. We note 
that the absence of those monetized benefits from the analysis of 
benefits does not imply that these benefits do not exist, but also has 
no bearing on the legal or technical basis for the final action itself. 
We qualitatively discuss these unquantified benefits in Chapter 6 of 
the RIA. If the EPA were to quantify the ozone and PM2.5 
impacts, the Agency would estimate the number and value of avoided 
premature deaths and illnesses using an approach detailed in the 
Particulate Matter NAAQS and Ozone NAAQS RIA.\32\ Such an analysis 
would account for the distribution of air pollution-attributable risks 
among populations most vulnerable and susceptible to PM2.5 
and ozone exposure. As explained in the RIA for this final rule, due to 
methodology and data limitations for areas experiencing elevated winter 
ozone, we were unable to estimate the benefits associated with ozone, 
PM2.5, and HAP emission changes that would occur as a result 
of this rule, but the EPA continues to develop better methods for 
analyzing the benefits of such reductions.
---------------------------------------------------------------------------

    \32\ U.S. EPA. Integrated Science Assessment (ISA) for 
Particulate Matter (Final Report). EPA Office of Research and 
Development (ORD), National Center for Environmental Assessment, 
EPA/600/R-19/188 (Dec. 2019); available at: https://www.epa.gov/naaqs/particulate-matter-pm-standards-integrated-science-assessments-current-review, accessed Mar. 11, 2022, and U.S. EPA. 
Integrated Science Assessment for Ozone and Related Photochemical 
Oxidants. EPA ORD, EPA/600/R-20/012 (Apr. 2020); available at: 
https://www.epa.gov/isa/integrated-science-assessment-isa-ozone-and-related-photochemical-oxidants. Accessed Mar. 11, 2022.
---------------------------------------------------------------------------

    The estimated capital and annualized compliance costs include the 
monetized costs for affected owners or operators to comply with the 
final rule. The net PV of these compliance costs (accounting for 
product recovery), discounted at a 7-percent rate, is estimated to be 
about $560 million, with an EAV of about $81 million (Table 1). Under a 
3-percent discount rate, the PV of the compliance costs is about $610 
million, with an EAV of about $72 million (Table 1).
    The PV of the net benefits of this rule, discounted at a 7-percent 
rate, is estimated to be about $440 million, with an EAV of about $39 
million (Table 1). Under a 3-percent discount rate, the PV of net 
benefits is about $390 million, with an EAV of about $48 million (Table 
1).

II. General Information

A. Does this action apply to me?

    Entities potentially affected by this rule include the Ute Indian 
Tribe,\33\ as well as existing, new, and modified sources \34\ that are 
in the oil and natural gas production and natural gas processing 
segments of the oil and natural gas industry (see Table 2.) and are on 
Indian country \35\ lands within the U&O Reservation. All of the Ute 
Indian Tribe Indian country lands of which the EPA is aware are located 
within the exterior boundaries of the Reservation, and this U&O FIP 
applies to all such lands. To the extent that there are Ute Indian 
Tribe Dependent Indian Communities under 18 U.S.C. 1151(b) or allotted 
lands under 18 U.S.C. 1151(c) that are located outside the exterior 
boundaries of the Reservation, those lands are not covered by this U&O 
FIP.\36\ In addition, this rule does not apply to any sources on non-
Indian-country lands, including any non-Indian country lands within the 
exterior boundaries of the Reservation.\37\
---------------------------------------------------------------------------

    \33\ The Ute Indian Tribe is a federally recognized tribe 
organized under the Indian Reorganization Act of 1934, with a 
Constitution and By-Laws adopted by the Tribe on December 19, 1936 
and approved by the Secretary of the Interior on January 19, 1937. 
See Indian Entities Recognized and Eligible to Receive Services from 
the United States Bureau of Indian Affairs, See 82 FR 4915 (Jan. 17, 
2017); 48 Stat. 984, 25 U.S.C.5123 (IRA); Constitution and By-Laws 
of the Ute Indian Tribe of the Uintah and Ouray Reservation.
    \34\ As specified at 40 CFR 49.4169(c).
    \35\ Indian country is defined at 18 U.S.C. 1151 as: (a) all 
land within the limits of any Indian reservation under the 
jurisdiction of the United States Government, notwithstanding the 
issuance of any patent, and, including rights-of-way running through 
the reservation, (b) all dependent Indian communities within the 
borders of the United States whether within the original or 
subsequently acquired territory thereof, and whether within or 
without the limits of a state, and (c) all Indian allotments, the 
Indian titles to which have not been extinguished, including rights-
of-way running through the same.
    \36\ Under the CAA, lands held in trust for the use of an Indian 
tribe are reservation lands within the definition at 18 
U.S.C.1151(a), regardless of whether the land is formally designated 
as a reservation. See Indian Tribes: Air Quality Planning and 
Management, See 63 FR 7254, 7258 (Feb. 12, 1998) (``Tribal Authority 
Rule''); Arizona Pub. Serv. Co. v. EPA, 211 F.3d 1280, 1285-86 (D.C. 
Cir. 2000). The EPA's references in this U&O FIP to Indian country 
lands within the exterior boundaries of the U&O Reservation include 
any such Tribal trust lands that may be acquired by the Ute Indian 
Tribe.
     In 2014, the U.S. Court of Appeals for the D.C. Circuit 
addressed the EPA's authority to promulgate a FIP establishing 
certain CAA permitting programs in Indian country. Oklahoma Dept. of 
Environmental Quality v. EPA, 740 F. 3d 185 (D.C. Cir. 2014). In 
that case, the court recognized the EPA's authority to promulgate a 
FIP to directly administer CAA programs on Indian reservations but 
invalidated the FIP at issue as applied to non-reservation areas of 
Indian country in the absence of a demonstration of an Indian 
tribe's jurisdiction over such non-reservation area. Because the 
final rule would apply only on Indian country lands that are within 
the exterior boundaries of the U&O Reservation, i.e., on Reservation 
lands, it is unaffected by the Oklahoma court decision.
    \37\ As a result of a series of federal court decisions, there 
are some non-Indian country lands within the exterior boundaries of 
the Uintah and Ouray Indian Reservation. See footnote 40.

[[Page 75341]]

                               Table 2--Source Categories Affected by This Action
----------------------------------------------------------------------------------------------------------------
                                                               Examples of regulated entities/description of
            Industry category                NAICS code                      industry category
----------------------------------------------------------------------------------------------------------------
Oil and Gas Production/Operations........           21111  Exploration for crude petroleum and natural gas;
                                                            drilling, completing, and equipping wells; operation
                                                            of separators, emulsion breakers, desilting
                                                            equipment, and field gathering lines for crude
                                                            petroleum and natural gas; and all other activities
                                                            in the preparation of oil and gas up to the point of
                                                            shipment from the producing property.
                                                           Production of crude petroleum, the mining and
                                                            extraction of oil from oil shale and oil sands, the
                                                            production of natural gas, sulfur recovery from
                                                            natural gas, and the recovery of hydrocarbon liquids
                                                            from oil and gas field gases.
Crude Petroleum and Natural Gas                    211111  Exploration, development and/or the production of
 Extraction.                                                petroleum or natural gas from wells in which the
                                                            hydrocarbons will initially flow or can be produced
                                                            using normal pumping techniques or production of
                                                            crude petroleum from surface shales or tar sands or
                                                            from reservoirs in which the hydrocarbons are
                                                            semisolids
Natural Gas Liquid Extraction............          211112  Recovery of liquid hydrocarbons from oil and gas
                                                            field gases; and sulfur recovery from natural gas.
Drilling Oil and Gas Wells...............          213111  Drilling oil and gas wells for others on a contract
                                                            or fee basis, including spudding in, drilling in,
                                                            redrilling, and directional drilling.
Support Activities for Oil and Gas                 213112  Performing support activities on a contract or fee
 Operations.                                                basis for oil and gas operations (except site
                                                            preparation and related construction activities)
                                                            such as exploration (except geophysical surveying
                                                            and mapping); excavating slush pits and cellars,
                                                            well surveying; running, cutting, and pulling
                                                            casings, tubes, and rods; cementing wells, shooting
                                                            wells; perforating well casings; acidizing and
                                                            chemically treating wells; and cleaning out,
                                                            bailing, and swabbing wells.
----------------------------------------------------------------------------------------------------------------

    This table is not intended to be exhaustive, but rather provides a 
guide for readers regarding entities likely to be regulated by this 
action. This table lists the types of entities that the EPA is now 
aware could potentially be regulated by this action. Other types of 
entities not listed in the table could also be regulated. To determine 
whether your entity is regulated by this action, you should carefully 
examine the applicability criteria found in 40 CFR 49.4169 through 
49.4184. If you have any questions regarding the applicability of this 
action to a particular entity, contact the appropriate person listed in 
the FOR FURTHER INFORMATION CONTACT section.

B. Where can I get a copy of this document and other related 
information?

    In addition to being available in the docket, an electronic copy of 
this final action will also be posted at: https://www.epa.gov/air-quality-implementation-plans/approved-air-quality-implementation-plans-region-8 (Approved Air Quality Implementation Plans in Region 8 page).

C. Judicial Review

    Under section 307(b)(1) of the Act, petitions for judicial review 
of this action must be filed in the United States Court of Appeals for 
the appropriate circuit by February 6, 2023. Filing a petition for 
reconsideration by the Administrator of this final rule does not affect 
the finality of this rule for the purposes of judicial review nor does 
it extend the time within which a petition for judicial review may be 
filed and shall not postpone the effectiveness of such rule or action. 
Under section 307(b)(2) of the Act, the requirements of this final 
action with respect to which review could have been obtained under 
section 307(b)(1) of the Act may not be judicially reviewed later in 
civil or criminal proceedings brought by us to enforce these 
requirements.

III. Background

A. Uintah and Ouray Indian Reservation

    The Uintah and Ouray Indian Reservation is composed of lands that 
were part of the original Uintah Valley and Uncompahgre Reservations, 
which were established by executive order in 1861 and 1882, 
respectively.\38\ In 1948 Congress extended the exterior boundary of 
the Reservation with the Hill Creek Extension.\39\ The U&O 
Reservation's boundaries have been addressed and explained in a series 
of federal court decisions. Consistent with those decisions, the EPA 
considers all lands within the U&O Reservation's boundaries to be 
``Indian country'' as defined in 18 U.S.C. 1151, subject to federal 
court decisions holding that specified Congressional acts removed 
certain lands from Indian country status.\40\
---------------------------------------------------------------------------

    \38\ See Exec. Order of Oct. 3, 1861, reprinted in 1 Charles J. 
Kappler, Indian Affairs: Laws and Treaties 900 (1904); confirmed by 
Congress in the Act of May 5, 1864, ch. 77, 13 Stat. 63; Exec. Order 
of Jan. 5, 1882, reprinted in Indian Affairs: Laws and Treaties at 
901; U.S. Office of Indian Affairs, Dept. of the Interior, Annual 
Report of the Commissioner of Indian Affairs, at 226 (1886).
    \39\ 62 Stat. 72 (1948).
    \40\ See Ute Indian Tribe v. Utah, 521 F. Supp. 1072 (D. Utah 
1981); Ute Indian Tribe v. Utah, 716 F.2d 1298 (10th Cir. 1983); Ute 
Indian Tribe v. Utah, 773 F.2d 1087 (10th Cir. 1985) (en banc), 
cert. denied, 479 U.S. 994 (1986); Hagen v. Utah, 510 U.S. 399 
(1994); Ute Indian Tribe v. Utah, 935 F. Supp. 1473 (D. Utah 1996); 
Ute Indian Tribe v. Utah, 114 F.3d 1513 (10th Cir. 1997), cert. 
denied, 522 U.S. 1107 (1998); Ute Indian Tribe v. Utah, 790 F.3d 
1000 (10th Cir. 2015), cert. denied, 136 S. Ct. 1451 (2016); and Ute 
Indian Tribe v. Myton, 835 F.3d 1255 (10th Cir. 2016), cert. 
dismissed, 137 S. Ct. 2328 (2017); Hackford v. Utah, 845 F.3d 1325, 
1327 (10th Cir.), cert. denied, 138 S. Ct. 206 (2017).
---------------------------------------------------------------------------

B. Tribal Authority Rule

    Section 301(d) of the CAA authorizes the EPA to treat Indian tribes 
in the same manner as states for purposes of implementing the CAA over 
their entire reservations and over any other areas within their 
jurisdiction, and directs the EPA to promulgate regulations specifying 
those provisions of the CAA for which such treatment is 
appropriate.\41\ It also authorizes the EPA, when the EPA determines 
that the treatment of Indian tribes as identical to states is 
inappropriate or administratively infeasible, to provide by regulation 
other means by which the EPA will directly administer the CAA.\42\ 
Acting principally under that authority, on February 12, 1998, the EPA 
promulgated the Tribal Authority Rule (TAR).\43\ In the TAR, we 
determined that it was appropriate to treat eligible tribes in the same 
manner as states for

[[Page 75342]]

all CAA statutory and regulatory purposes, except a list of specified 
CAA provisions and implementing regulations thereunder.\44\ That list 
of excluded provisions includes specific plan submittal and 
implementation deadlines for NAAQS-related requirements, among them the 
CAA section 110(a)(2)(C) requirement to submit a program (including a 
permit program as required in parts C and D of the CAA) to regulate the 
modification and construction of any stationary source as necessary to 
assure that the NAAQS are achieved. Other provisions for which we 
determined that we would not treat tribes in the same manner as states 
include CAA section 110(a)(1) (SIP submittal) and CAA section 110(c)(1) 
(directing the EPA to promulgate a FIP ``within 2 years'' after we find 
that a state has failed to submit a required plan or has submitted an 
incomplete plan, or within 2 years after we disapprove all or a portion 
of a plan).
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    \41\ 42 U.S.C. 7601(d)(1) and (2); See 63 FR 7254-57 (Feb. 12, 
1998) (explaining that CAA section 301(d) includes a delegation of 
authority from Congress to eligible Indian tribes to implement CAA 
programs over all air resources within the exterior boundaries of 
their Reservations).
    \42\ 42 U.S.C. 7601(d)(4).
    \43\ ``Indian Tribes: Air Quality Planning and Management.'' see 
63 FR 7254 (Feb. 12, 1998); 40 CFR 49.1-49.11.
    \44\ 40 CFR 49.3-.4. To be eligible for treatment in a similar 
manner as a state (TAS) under the Tribal Authority Rule, a tribe 
must meet four requirements: (1) be a federally recognized tribe; 
(2) have a governing body carrying out substantial governmental 
duties and functions; (3) propose to carry out functions pertaining 
to the management and protection of air resources of the tribe's 
reservation or other areas within the tribe's jurisdiction; and (4) 
be reasonably expected to be capable of carrying out the functions. 
40 CFR 49.6. A tribe interested in administering a particular CAA 
program or function may apply to the appropriate regional 
administrator for a determination of whether it meets these TAS 
eligibility criteria with respect to that program or function. 40 
CFR 49.7.
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    The TAR preamble clarified that by including CAA section 110(c)(1) 
on the list at 40 CFR 49.4, the ``EPA is not relieved of its general 
obligation under the CAA to ensure the protection of air quality 
throughout the nation, including throughout Indian country.'' \45\ The 
preamble confirmed that the ``EPA will continue to be subject to the 
basic requirement to issue a FIP for affected tribal areas within some 
reasonable time.'' \46\ Consistent with those statements, the TAR 
includes a provision requiring the EPA to ``promulgate without 
unreasonable delay such Federal implementation plan provisions as are 
necessary or appropriate to protect air quality,'' unless a complete 
TIP is submitted or approved.\47\
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    \45\ See 63 FR at 7265 (Feb. 12, 1998).
    \46\ Id.
    \47\ 40 CFR 49.11(a).
---------------------------------------------------------------------------

    The Ute Indian Tribe has not applied for treatment in a similar 
manner as a state (TAS) for the purpose of administering a TIP under 
the CAA; nor has it submitted a TIP for review and approval. Thus, with 
respect to Indian country lands within the U&O Reservation, there is 
currently no submitted or EPA-approved TIP that would address the air 
quality purposes described earlier. This FIP provides such a plan and 
applies to all Indian country lands within the exterior boundaries of 
the U&O Reservation.

C. Federal Indian Country Minor NSR Rule

1. What is the Federal Indian Country Minor NSR rule?
    In 2006, acting under the authority provided in CAA section 301(d) 
and in the TAR, we proposed the FIP regulation: ``Review of New Sources 
and Modifications in Indian Country'' (Indian Country NSR rule).\48\ As 
a part of this regulation, the EPA made a finding that it was necessary 
or appropriate to protect air quality by developing a FIP to establish 
a program to regulate the modification and construction of minor 
stationary sources consistent with the requirements of section 
110(a)(2)(c) of the CAA, where there was no EPA-approved tribal minor 
NSR permit program in Indian country to regulate construction of new 
and modified minor sources and minor modifications of major sources. We 
call this part of the Indian Country NSR rule the Federal Indian 
Country Minor NSR rule. In developing that FIP, we sought to 
``establish a flexible preconstruction permitting program for minor 
sources in Indian country that is comparable to similar programs in 
neighboring states in order to create a more consistent regulatory 
environment for owners/operators within and outside of Indian 
country.'' \49\ The Federal Indian Country Minor NSR rule provides a 
mechanism for issuing preconstruction permits for the construction of 
new minor sources and certain modifications of major and minor sources 
in areas covered by the rule. In developing the rule, the EPA conducted 
extensive outreach and consultation, along with a 7-month public 
comment period that ended on March 20, 2007. The comments provided 
detailed information specific to Indian country, and the final Federal 
Indian Country Minor NSR rule incorporated many of the suggestions we 
received. We promulgated a final rule on July 1, 2011, and the FIP 
became effective on August 30, 2011. \50\
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    \48\ ``Review of New Sources and Modifications in Indian 
Country,'' Proposed Rule, 71 FR 48696 (Aug. 21, 2006).
    \49\ ``Review of New Sources and Modifications in Indian 
Country,'' Final Rule, 76 FR 38748, 38754 (July 1, 2011).
    \50\ See 76 FR 38748.
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    The Federal Indian Country Minor NSR rule applies to existing, new, 
and modified minor stationary sources and to minor modifications at 
existing major stationary sources in Indian country where there is no 
EPA-approved program in place. \51\ Tribes can elect to develop and 
implement their own EPA-approved program under the TAR but are not 
required to do so.\52\ In the absence of an EPA-authorized program, the 
EPA implements the program. Tribes can request administrative 
delegation of the federal program from the EPA and may be authorized by 
the EPA to implement agreed-upon rules or provisions on behalf of the 
Agency.
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    \51\ 40 CFR 49.153. Existing sources are only subject to the 
registration requirements unless they undergo modification.
    \52\ To be eligible to develop and implement an EPA-approved 
program, under the Tribal Authority Rule a tribe must meet four 
requirements: (1) be a federally-recognized tribe; (2) have a 
functioning government carrying out substantial duties and powers; 
(3) propose to carry out functions pertaining to air resources of 
the reservation or other areas within the tribe's jurisdiction; and 
(4) be reasonably expected to be capable of carrying out the 
program. See 40 CFR 40 CFR 49.1-49.11. Tribes can also establish 
permit fees under a tribal permitting program pursuant to tribal 
law, as do most states.
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    Any existing, new, or modified stationary oil and natural gas 
source that emits or has the potential to emit (PTE) a regulated NSR 
pollutant in amounts equal to or greater than the minor NSR thresholds 
in the Federal Indian Country Minor NSR rule, but less than the amount 
that would qualify the source as a major source or a major modification 
for purposes of the PSD or nonattainment major NSR programs, must 
submit a registration form to the EPA containing information on, among 
other things, source-wide actual emissions of NSR regulated pollutants, 
information on the methods used to calculate the emissions, and 
descriptions of the various emitting activities and equipment operated 
at the source. Existing, new, and modified oil and natural gas sources 
that commenced construction before October 3, 2016, complied with the 
Federal Indian Country Minor NSR Permit Program by registering under 
the Existing Source Registration Program at 40 CFR 49.160. Beginning 
October 3, 2016, the owner/operator of any new true minor oil and 
natural gas source must comply with the National O&NG FIP or apply for 
and obtain a site-specific true minor NSR permit before beginning 
construction. Likewise, the owner/operator of any existing stationary 
source (minor or major) must comply with the National O&NG FIP or apply 
for and obtain a minor NSR permit before beginning construction of a 
physical or operational

[[Page 75343]]

change that will increase the allowable emissions of the stationary 
source in amounts equal to or above the specified threshold amounts, if 
the change does not otherwise trigger PSD or nonattainment major or 
minor NSR permitting requirements.\53\
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    \53\ A source may, however, be subject to certain monitoring, 
recordkeeping, and reporting (MRR) requirements under the major NSR 
program, if the change has a reasonable possibility of resulting in 
a major modification. A source may be subject to both the Federal 
Indian Country Minor NSR rule and the MRR requirements of the major 
NSR program.
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2. What are the minor NSR thresholds?
    The ``minor NSR thresholds'' establish cutoff levels for each 
regulated NSR pollutant. If a source has a PTE in amounts lower than 
the minor NSR thresholds,\54\ then it is exempt from the Federal Indian 
Country Minor NSR rule for that pollutant. New or modified sources that 
have a PTE in amounts that are: (1) equal to or greater than the minor 
NSR thresholds; and (2) less than the major NSR thresholds (generally 
100 or 250 tons per year (tpy)) are ``minor sources'' of emissions and 
subject to the Federal Indian Country Minor NSR rule requirements at 40 
CFR 49.151 through 49.161. Modifications at existing major sources that 
have PTE equal to or greater than the minor NSR thresholds, but less 
than the major NSR significant emission rates (range 10-100 tpy, 
depending on the pollutant) are also ``minor sources'' of emissions and 
subject to the Federal Indian Country Minor NSR rule requirements.
---------------------------------------------------------------------------

    \54\ See 40 CFR 49.153, Table 1.
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    The minor NSR thresholds for VOC emissions for sources in Indian 
country are 2 tpy in nonattainment areas and 5 tpy in attainment and 
unclassifiable areas. Portions of the U&O Reservation are currently 
designated unclassifiable for the 2008 ozone NAAQS and the minor NSR 
thresholds for VOC are 5 tpy in those Indian country portions of the 
Reservation. As discussed previously and further in Section D (Air 
Quality and Attainment Status), other portions of the U&O Reservation 
are included in the Uinta Basin Ozone Nonattainment Area, and, 
therefore, the minor NSR thresholds for VOC are 2 tpy in those Indian 
country portions of the Reservation.

D. Air Quality and Attainment Status

    With respect to air quality, ozone levels in the Uinta Basin, in 
which the U&O Reservation is located, have reached unhealthy levels 
that warrant action. The 2015 8-hour ozone NAAQS is 70 parts per 
billion (ppb).\55\ Compliance with the NAAQS is determined by 
comparison to a ``design value'' based on a three-year average of the 
fourth highest daily maximum 8-hour average ozone levels measured in a 
year at each monitoring site. The state of Utah, the National Park 
Service (NPS), and the Ute Indian Tribe operate ozone, 
PM2.5, and NO2 monitors in and around the Uinta 
Basin. The ambient air concentrations measured at some of these 
stations show that ozone levels in the Uinta Basin have repeatedly 
violated both the 2008 and 2015 ozone NAAQS. Based on 2012-2020 
regulatory air quality monitoring data, ozone design values exceed the 
2015 ozone NAAQS at five monitoring sites in the Uinta Basin. The 
highest valid ozone design value in the Uinta Basin for the three-year 
period from 2017 to 2019 was from the Ouray monitor at 89 ppb.\56\ The 
current (three-year period from 2018 to 2020) highest valid ozone 
design value in the Uinta Basin is also from the Ouray monitor at 76 
ppb. Additionally, higher single 8-hour average ozone concentrations 
were observed at some monitoring sites, before the sites were 
designated as regulatory monitors.\57\ For example, 8-hour average 
ozone concentrations reached values as high as 141 ppb at the Ouray 
monitor in March 2013. This concentration corresponds to an Air Quality 
Index value of 211, which is characterized as ``Very Unhealthy.'' \58\
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    \55\ See 80 FR 65292 (Oct. 26, 2015).
    \56\ Valid design values are the regulatory statistic to 
determine compliance with a NAAQS. They are calculated in accordance 
with the appropriate NAAQS-specific appendix to 40 CFR part 50. For 
the 2008 Ozone NAAQS (75 ppb), the appropriate appendix is 40 CFR 
part 50, appendix P, and for the 2015 Ozone NAAQS (70 ppb) it is 40 
CFR part 50, appendix U. Regulatory ozone data is available at 
https://www.epa.gov/air-trends/ozone-trends, accessed Mar. 14, 2022.
    \57\ A ``regulatory'' monitor is a monitor that meets the EPA's 
air quality monitoring requirements, including requirements for 
siting, equipment selection, data sampling protocols, and quality 
assurance, under the EPA's monitoring regulations at 40 CFR part 58.
    \58\ The Air Quality Index (AQI) is a normalized system to allow 
the public to compare health risks of different air pollutants on a 
common scale. The AQI is divided into six levels of health concern: 
Good, Moderate, Unhealthy for Sensitive Groups, Unhealthy, Very 
Unhealthy, and Hazardous.
---------------------------------------------------------------------------

    As discussed previously, the EPA designated areas in the Uinta 
Basin below 6,250 feet, including portions of the Indian country lands 
within the U&O Reservation, as marginal nonattainment for the 2015 
ozone standard. The fourth maximum ambient air concentration 
measurement for 2020, the attainment year, is 66 ppb, which is lower 
than the 2015 ozone NAAQS. Accordingly, Utah and the Ute Indian Tribe 
requested to extend the August 3, 2021, attainment date for the Uinta 
Basin Ozone Nonattainment Area by 1-year. On April 13, 2022, the EPA 
proposed to grant a 1-year attainment date extension for the Uintah 
Basin Ozone Nonattainment area.\59\ The proposal explains that 
preliminary 2021 ozone monitoring data indicate that the area may not 
attain the 2015 ozone NAAQS by the proposed extended attainment date of 
August 3, 2022, but that the area could meet the air quality criteria 
for a second 1-year extension. As of February 9, 2022, the Uinta Basin 
area's preliminary 2019-2021 design value was 78 ppb and the 
preliminary 2021 fourth highest daily maximum 8-hour concentration 
value was 72 ppb. To qualify for a second 1-year extension, an area's 
fourth highest daily maximum 8-hour value, averaged over both the 
original attainment year and the first extension year, must be 70 ppb 
or less (40 CFR 51.1307(a)(2)). If the preliminary 2021 ozone data are 
certified, then the fourth highest daily maximum 8-hour value, averaged 
over 2020 and 2021, would be 69 ppb. \60\ The EPA is issuing this 
notice of final rulemaking (NFRM) because we have concluded that it is 
necessary and appropriate to take action to protect air quality on the 
Indian country lands within the U&O Reservation to address these 
elevated ozone levels.
---------------------------------------------------------------------------

    \59\ See 87 FR 21842 (Apr. 13, 2022), available at https://www.govinfo.gov/content/pkg/FR-2022-04-13/pdf/2022-07513.pdf, 
accessed Apr. 29, 2022. The criteria to qualify for requesting a 1-
year extension of the attainment date are: (1) the state has 
complied with all requirements and commitments pertaining to the 
area in the applicable implementation plan; and (2) for a first 
attainment date extension, an area's fourth highest daily maximum 8-
hour value for the attainment year must not exceed the level of the 
standard.
    \60\ Preliminary air quality data is available at https://www.epa.gov/outdoor-air-quality-data/download-daily-data, accessed 
Apr. 29, 2022.
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    Ambient ozone is a secondary pollutant formed when the two primary 
ozone precursors, VOC and NOX, react in the presence of 
sunlight. Air quality data and studies in the Uinta Basin show that 
winter ozone levels above the NAAQS are due to a combination of 
abundant local ground-level emissions of VOC and NOX with 
the unique meteorological and topographic features in the Uinta Basin: 
strong and persistent temperature inversions forming over snow-covered 
ground, and elevated terrain completely surrounding a low basin. The 
stable atmosphere allows the emissions to accumulate and react with 
sunlight but prevents the emissions from escaping the temperature 
inversion layer and dispersing. Therefore, ozone continues to form 
while the unique meteorological conditions persist.\61\ The

[[Page 75344]]

state of Utah conducted field studies in the Uinta Basin from 2011 to 
2014 to understand the emissions sources and the unique photochemical 
processes that contribute to winter ozone concentrations within the 
Uinta Basin. Reports for winter ozone field studies for each year are 
available on the UDEQ website.\62\ These studies found that the oil and 
natural gas production industry is the most significant anthropogenic 
contributor of VOC and NOX emissions in the Basin and 
primarily responsible for winter ozone formation. The studies also 
concluded that winter ozone production in the Basin is sensitive to 
changes in VOC emissions, and that there is greater uncertainty about 
its sensitivity to changes in NOX emissions.
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    \61\ The RIA for this final rule contains a more detailed 
discussion of winter ozone and can be viewed in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
    \62\ ``Uinta Basin Ozone Studies (UBOS),'' https://deq.utah.gov/air-quality/uinta-basin-ozone-studies-ubos, accessed Mar. 11, 2022.
---------------------------------------------------------------------------

    The EPA has determined that this final action will result in large 
reductions of VOC emissions, and that this result is expected to reduce 
ambient ozone and reduce the severity of exceedances of the 2008 and 
2015 ozone NAAQS.\63\ As discussed in more detail later, the final 
action includes a requirement for owners/operators to submit emissions 
inventories on a triennial basis. This information will enable the 
successful partnership to continue among the EPA, the UDEQ, the Tribe 
and industry in maintaining an accurate oil and natural gas emissions 
inventory for the Uinta Basin to be used, in part, as a tool for 
managing the Basin's air quality.
---------------------------------------------------------------------------

    \63\ As discussed in the RIA for this final rule (available at 
https://www.regulations.gov, Docket ID #EPA-R08-OAR-2015-0709), 
adoption of the VOC control measures required under this FIP may 
result in very small NOX emission increases. We estimate 
that these additional NOX emissions would be at most 27 
tpy total. Considering the large amount of VOC emission reductions 
that the same controls will achieve, the small potential 
NOX emissions increase will not counteract the effect of 
the VOC reductions or adversely affect the area's ability to attain 
the NAAQS.
---------------------------------------------------------------------------

    We had previously informed the public of our intent to undertake 
action specific to the Indian country lands within the U&O Reservation; 
as noted earlier, in the preamble to the National O&NG FIP, we stated: 
``For the Uintah and Ouray Reservation, we have sufficient concerns 
about the air quality impacts from existing sources that we plan to 
propose a separate U&O FIP.'' \64\ After further review, and 
considering the emissions information presented below, the EPA 
concludes that those concerns are still warranted, and that this action 
is necessary and appropriate to address poor air quality on the Indian 
country lands within the U&O Reservation.
---------------------------------------------------------------------------

    \64\ See 81 FR at 35963 (June 3, 2016).
---------------------------------------------------------------------------

E. Emissions Information

    In 2020, the EPA, in cooperation with the UDEQ and the Ute Indian 
Tribe, developed the UBEI2017-Update, an emission inventory of oil and 
natural gas activity in the Uinta Basin that was populated with data 
provided by oil and natural gas operators in the Basin.\65\ We are also 
aware of several other available sources of information on air 
emissions from oil and natural gas activity in the Uinta Basin, 
including: (1) the 2017 National Emissions Inventory (2017 NEI); \66\ 
(2) a study by the Western Regional Air Partnership (WRAP); \67\ (3) 
existing true minor source registration data and new and modified true 
minor source registration submitted to the EPA under the Federal Indian 
Country Minor NSR Program; \68\ and (4) EPA Greenhouse Gas Reporting 
Program, subpart W Petroleum and Natural Gas Systems.\69\ They are 
discussed in more detail in the Regulatory Impact Analysis (RIA) for 
this final rule.\70\
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    \65\ The inventory and supporting analysis can be viewed in the 
docket for this rule, in the Microsoft Excel spreadsheet titled, 
``UO FIP cost and emissions analysis.xlsx'' (Docket ID No. EPA-R08-
OAR-2015-0709). This U&O FIP requires owners and operators to submit 
triennial emissions inventories, similar to a requirement finalized 
by the UDEQ in March of 2018. These triennial updates will provide 
information on how emissions are changing in the Basin from the 2017 
baseline. See Section V (Summary of FIP Provisions).
    \66\ See 2017 National Emissions Inventory (2017 NEI), available 
at https://www.epa.gov/air-emissions-inventories/2017-national-emissions-inventory-nei-data, accessed Sept. 28, 2020. Queried: 
Duchesne & Uintah Counties VOC-NOx all sectors; Ute Indian Tribe of 
the Uintah & Ouray Indian Reservation VOC-NOx all sectors. EPA's 
analysis of the 2017 NEI data is available in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709), Microsoft Excel 
spreadsheet titled ``2017 NEI Uinta Basin_Duchesne Counties_U&O_VOC-
NOx.xlsx. The UDEQ submitted the UBEI2017 to the 2017 NEI, but later 
updated it for storage vessel, pneumatic controller, pneumatic pump, 
fugitive, gas well liquid unloading, blowdowns and pigging and 
oilfield wastewater emissions that are planned to be submitted to 
the NEI at a future date (see footnote 75). Analysis of the 2017 NEI 
for the purposes of this final U&O FIP was prepared using the 
version publicly available before incorporating these updates from 
the UDEQ.
    \67\ Western Regional Air Partnership (WRAP), O&G Emissions 
Workgroup: Phase III Inventory, Uinta Basin Reports, 2012 Mid-Term 
Projection Technical Memo, ``Development of 2012 Oil and Gas 
Emissions Projections for the Uinta Basin'', March 25, 2009, 
available at http://www.wrapair2.org/PhaseIII.aspx, accessed Mar. 
14, 2022. Some of the 2014 Uinta Basin Emissions Inventory was 
generated from prorating the 2012 WRAP estimates (which prorated and 
adjusted their 2006 work) to 2014 activity levels.
    \68\ Data from existing true minor source registration reports 
and data from new and modified true minor oil and natural gas source 
registrations under the National O&NG FIP, submitted under 40 CFR 
49.160 of the Federal Indian Country Minor NSR Program by operators 
of sources on the Indian country lands within the U&O Reservation.
    \69\ EPA Greenhouse Gas Reporting Program (GHGRP) Petroleum and 
Natural Gas Systems, available at https://www.epa.gov/ghgreporting/ghgrp-petroleum-and-natural-gas-systems, accessed Mar. 14, 2022.
    \70\ The RIA can be viewed in the docket for this rulemaking 
(Docket ID No. EPA-R08-OAR-2015-0709).
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    The 2017 NEI provides a general picture of the relative 
contributions of ozone-forming emissions from the oil and natural gas 
sector as compared to other industry sectors, estimating that emissions 
from the production segment of the oil and natural gas sector were the 
largest anthropogenic \71\ contributor of both VOC and NOX 
emissions in the Uinta Basin, at 97 percent of the VOC emissions and 64 
percent of the NOX emissions. The WRAP study provides a 
general picture of the relative emissions contribution in the Basin 
from various oil and natural gas equipment and activities on Indian 
country lands. The existing minor source registration data provide a 
general picture of the large percentage of unpermitted and likely 
uncontrolled minor emissions sources on Indian country lands within the 
U&O Reservation. EPA Greenhouse Gas Reporting Program, subpart W, 
provides annual reports by operators of activity levels and methane 
emissions from oil and natural gas operations in the Uinta Basin. The 
UBEI2017-Update is a comprehensive source of oil and natural gas source 
VOC emissions data for the Uinta Basin that provided information for 
the cost and benefit analysis supporting this rulemaking.
---------------------------------------------------------------------------

    \71\ The calculation excludes biogenic sources of VOC and 
NOX, because elevated ozone occurs during the winter when 
vegetation and soils are presumed to not be a contributor because 
they are dormant or covered by snow.
---------------------------------------------------------------------------

    The UBEI2017-Update indicates that the majority of existing oil and 
natural gas sources in the region are on Indian country lands within 
the U&O Reservation. As explained in more detail below, most of these 
are minor sources and are uncontrolled. The 2017 NEI indicates that, 
compared to other industry sector sources, existing oil and natural gas 
sources are cumulatively the largest anthropogenic contributor of VOC 
(97 percent) and NOX (64 percent) to measured exceedances of 
the ozone NAAQS in the Uinta Basin. Existing oil and natural gas 
sources on the portions of the Basin regulated by the UDEQ are subject 
to emission reduction requirements, while existing sources on Indian 
country lands within the U&O Reservation were previously either subject 
to less stringent regulation or no regulation at all.

[[Page 75345]]

    Specifically, the UBEI2017-Update shows that 76 percent of all 
existing oil and natural gas facilities (including well sites 
processing fluids from multiple individual wells, as well as compressor 
stations and other processing facilities) in the Uinta Basin are 
located on Indian country lands within the U&O Reservation. According 
to the inventory, almost 73,000 tons of VOC and over 6,700 tons of 
NOX emissions were emitted in 2017 from existing oil and 
natural gas sources on Indian country lands within the U&O Reservation. 
That is approximately 89 percent of the total oil and natural gas-
related VOC emissions in the Uinta Basin and approximately 63 percent 
of the total oil and natural gas-related NOX emissions in 
the Uinta Basin. These data confirm that the bulk of the ozone-related 
emissions in the Uinta Basin are released from sources on the Indian 
country lands within the U&O Reservation.
    Many of the oil and natural gas sources on Indian country lands 
within the U&O Reservation are uncontrolled. According to the UEBI2017-
Update, on the Indian country lands within the U&O Reservation, 85 
percent of the total number of existing storage vessels, 98 percent of 
the total number of existing glycol dehydrators and 99 percent of 
existing pneumatic pumps are uncontrolled emitters of VOC. By contrast, 
in areas of the Basin where the EPA has approved the UDEQ to implement 
the CAA, 68 percent of the total number of existing storage vessels and 
52 percent of the total number of existing glycol dehydrators are 
uncontrolled (uncontrolled pneumatic pump numbers are relatively 
equivalent to Indian country at 99 percent). The UDEQ has adopted 
revisions to existing oil and natural gas source requirements and 
existing minor source permitting requirements, and has adopted new 
requirements, including a Permit by Rule that replaces the requirement 
for minor oil and natural gas sources to obtain a site-specific 
permit.\72\ Now that the revised and new requirements are effective, we 
expect the percentage of uncontrolled existing storage vessels and 
glycol dehydrators in areas of the Basin where the EPA has approved the 
UDEQ to implement the CAA will decrease from what was reported in the 
UBEI2017-Update. The UDEQ's rule revisions and new rules are discussed 
in more detail in the preamble to the proposed FIP.\73\ In addition, 
the UBEI2017-Update shows that emissions from oil and natural gas 
wastewater disposal facilities on the Indian country lands within the 
U&O Reservation comprise approximately 35 percent of the total VOC 
emissions from oil and natural gas activity on the Indian country lands 
within the U&O Reservation. As explained in the preamble to the 
proposed FIP,\74\ these facilities may not be controlled under the CAA, 
because they do not meet the applicability criteria of preconstruction 
permitting programs or federal emissions standards regulating them.
---------------------------------------------------------------------------

    \72\ Utah State Bulletin, Official Notices of Utah State 
Government, Filed Jan. 3, 2018, 12:00 a.m. through Jan. 16, 2018, 
11:59 p.m., 11:59 p.m., Number 2018-3, February 01, 2018, Nancy L. 
Lancaster, Managing Editor, pages 46-68, available in the docket for 
this rulemaking (Docket ID No. EPA-R08-OAR-2015-0709.
    \73\ See 85 FR 3504-3506, Section IV. D. Developing the Proposed 
Control Requirements, 3. Evaluation of State Oil and Natural Gas and 
Permitting-Related Requirements.
    \74\ See 85 FR 3503-3504, Section IV. D. Developing the Proposed 
Control Requirements, 2. Evaluation of Federal Oil and Natural Gas 
and Permitting-Related Requirements.
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    Based on this collection of emissions information (and other 
information about meteorological conditions and local geography), the 
EPA has concluded that winter ozone levels in the Uinta Basin are most 
significantly influenced by VOC emissions from the presence of numerous 
minor, unpermitted and largely uncontrolled oil and natural gas 
production operations on Indian country lands within the U&O 
Reservation.

F. What is a FIP?

    Under section 302(y) of the CAA, the term ``Federal implementation 
plan'' means ``a plan (or portion thereof) promulgated by the 
Administrator to fill all or a portion of a gap or otherwise correct 
all or a portion of an inadequacy in a state implementation plan, and 
which includes enforceable emission limitations or other control 
measures, means or techniques (including economic incentives, such as 
marketable permits or auctions of emissions allowances), and provides 
for attainment of the relevant national ambient air quality standard.'' 
As discussed previously in section III.B., CAA sections 301(a) and 
301(d)(4) and 40 CFR 49.11(a) authorize the EPA to promulgate such FIPs 
as are necessary or appropriate to protect air quality if a Tribe does 
not submit or receive EPA approval of a TIP.
    The Federal Indian Country Minor NSR rule is an example of a FIP, 
as discussed in section III.C. Another example of the EPA's use of its 
FIP authority to protect air quality in areas of Indian country with no 
EPA-approved program, while at the same time seeking to provide a 
consistent regulatory environment where appropriate, is the ``FIP for 
Oil and Natural Gas Well Production Facilities; Fort Berthold Indian 
Reservation (FBIR; Mandan, Hidatsa, and Arikara Nation), North 
Dakota.'' \75\ In that rule, we took an important initial step to 
control VOC emissions from existing, new, and modified oil and natural 
gas operations on the FBIR. We drafted requirements that were 
consistent to the greatest extent practicable with the most relevant 
aspects of neighboring state and local rules concerning the air 
pollutant emitting activities on the FBIR. We did not intend at the 
time, nor did we expect, the regulation to impose significantly 
different regulatory burdens upon industry or the residents of the FBIR 
than those imposed by the rules of state and local air agencies in the 
surrounding areas.
---------------------------------------------------------------------------

    \75\ See 78 FR 17836 (Mar. 22, 2013).
---------------------------------------------------------------------------

    This U&O FIP specific to Indian country lands within the U&O 
Reservation will reduce VOC emissions related to the formation of 
ozone. Exceedances of both the 2008 and the 2015 ozone NAAQS have 
occurred at air quality monitors on and around the Reservation, and 
portions of the Uinta Basin, including portions of the U&O Reservation, 
were designated by the EPA in 2018 as nonattainment for the 2015 ozone 
NAAQS. There are no currently approved TIPs that apply to existing oil 
and natural gas sources on Indian country lands within the U&O 
Reservation. Finally, the majority of the sources covered by this U&O 
FIP have not previously been subject to federally required emissions 
controls, as discussed further in Section IV.A of the preamble to the 
proposed FIP.\76\ For all of these reasons, we have concluded that is 
both necessary and appropriate to protect air quality on the Indian 
country lands within the U&O Reservation by promulgating this FIP.
---------------------------------------------------------------------------

    \76\ See 85 FR 3501, Section IV. Developing the Proposed Control 
Rule, A. Rationale for the Proposed Rule.
---------------------------------------------------------------------------

G. Oil and Natural Gas Industry in the Uinta Basin

    The oil and natural gas industry in the Uinta Basin includes the 
extraction and production of oil and natural gas, as well as the 
processing, transmission, and distribution of natural gas. 
Specifically, for oil, the industry in the Uinta Basin includes all 
operations from the well to transfer to an oil transmission pipeline or 
other means of transportation to a petroleum refinery. The petroleum 
refinery is not considered part of the oil and natural gas industry. 
Thus, with respect to

[[Page 75346]]

crude oil, the oil and natural gas industry ends where crude oil enters 
an oil transmission pipeline or other means of transportation to a 
petroleum refinery. For natural gas, the industry includes all 
operations from the well to the final end user.
    The oil and natural gas industry in the Uinta Basin can generally 
be separated into four segments: (1) oil and natural gas production; 
(2) natural gas processing; (3) natural gas transmission and storage; 
and (4) natural gas distribution. This U&O FIP for oil and natural gas 
sources on Indian country lands within the U&O Reservation focuses on 
existing, new, and modified sources in the first and second segments, 
oil and natural gas production and natural gas processing, because the 
existing minor sources in those segments cumulatively contribute the 
largest portion of VOC emissions from the oil and natural gas industry 
on the Indian country portion of the U&O Reservation. There are more 
than 6,870 individual oil and natural gas sources (operated by 33 
distinct entities) on the Indian country lands within the U&O 
Reservation, the majority of which are well sites in the oil and 
natural gas production segment.\77\ As discussed earlier, the 2017 NEI 
shows that emissions from the production segment of the oil and natural 
gas sector were estimated to be the largest anthropogenic contributor 
of both VOC and NOX emissions in the Uinta Basin. 
Comparatively, the categories that include oil and natural gas storage 
and transfer and bulk gasoline terminals (segments 3 and 4), are 
reported in the 2017 NEI as contributing less than one percent each of 
the total VOC and NOX emissions in the Uinta Basin.\78\ Of 
the 13,363 individual active oil and natural gas wells in the Uinta 
Basin, over 10,108 wells, or about 76 percent, are on Indian country 
lands within the U&O Reservation.
---------------------------------------------------------------------------

    \77\ 2017 Uinta Basin Oil and Natural Gas Emissions Inventory 
Update (UBEI2017-Update). The inventory and supporting analysis can 
be viewed in the docket for this rulemaking. See ``UO FIP cost and 
emissions analysis.xlsx'' (Docket ID No. EPA-R08-OAR-2015-0709).
    \78\ Based on the NEI Source Type to Sector Crosswalk in the 
2017 NEI, available at https://www.epa.gov/air-emissions-inventories/2017-national-emissions-inventory-nei-data, accessed 
Mar. 14, 2022. Queried: Duchesne & Uintah Counties VOC-NOx all 
sectors; Ute Indian Tribe of the Uintah & Ouray Indian Reservation 
VOC-NOx all sectors. The EPA's analysis of the 2017 NEI data is 
available in the docket for this rulemaking (Docket ID No. EPA-R08-
OAR-2015-0709), Microsoft Excel spreadsheet titled ``2017 NEI Uinta 
Basin_Dechesne Counties_U&O_VOC-NOx.xlsx.''
---------------------------------------------------------------------------

    The oil and natural gas production segment in the Uinta Basin 
includes wells and all related processes used in the extraction, 
production, recovery, lifting, stabilization, and separation or 
treatment of oil and/or natural gas (including condensate). Production 
components in the Uinta Basin may include wells and related casing 
head, tubing head, and ``Christmas tree'' piping, as well as pumps, 
compressors, heater treaters, separators, storage vessels, pneumatic 
devices, pneumatic pumps, and natural gas dehydrators. Production 
operations in the Uinta Basin also include the well drilling, 
completion, and workover processes, and include all the portable non-
self-propelled apparatuses associated with those operations. Production 
sites in the Uinta Basin include not only the sites where the wells 
themselves are located, but also centralized gas and liquid gathering 
sources where oil, condensate, produced water, and natural gas from 
several wells may be separated, stored, and treated. Production 
components in the Uinta Basin also include the smaller diameter, low-
to-medium-pressure gathering pipelines and related components that 
collect and transport the oil, natural gas, and other materials and 
wastes from the wells or well pads.
    The natural gas production segment in the Uinta Basin ends where 
the natural gas enters a natural gas processing plant. Where there is 
no processing plant, the natural gas production segment ends at the 
point where the natural gas enters the transmission segment for long-
line transport. The crude oil production segment in the Uinta Basin 
ends at the storage and load-out terminal, which is the point of 
custody transfer to an oil pipeline or for transport of the crude oil 
to a petroleum refinery via trucks or railcars.
    Each producing crude oil and natural gas field has its own unique 
properties. The composition of the crude oil and the natural gas as 
well as the reservoir characteristics are likely to be different across 
all reservoirs. The RIA for this rule provides a more detailed overview 
of the products and components of the oil and natural gas industry that 
are relevant to the activities in the Uinta Basin.\79\
---------------------------------------------------------------------------

    \79\ The RIA for the final rule can be viewed in the docket for 
this rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

IV. Summary of the Final U&O FIP

A. Overview

    The emissions control and other requirements of this final FIP that 
will reduce VOC emissions from existing, new, and modified oil and 
natural gas sources on Indian country lands within the U&O Reservation 
are summarized in this section. Significant changes since proposal are 
discussed in more detail in section V of this preamble. The FIP 
includes emissions control efficiency requirements and operational and 
work practice standards, each with associated monitoring, testing, 
recordkeeping, and reporting requirements, as appropriate. Oil and 
natural gas sources must comply with these requirements, except as 
specifically exempted under the FIP for certain equipment or activities 
otherwise subject to existing federal standards 40 CFR part 60, 
subparts OOOO or OOOOa, or 40 CFR part 63, subpart HH. Also discussed 
in this section are the features of the FIP that are necessary to 
facilitate its implementation.
    This final rule applies to owners or operators of oil and natural 
gas sources that either produce oil and natural gas or process natural 
gas, that are located on Indian country lands within the U&O 
Reservation, and that meet the applicability criteria specified for 
each set of requirements. It includes the following provisions in 40 
CFR part 49:

49.4169 Introduction.
49.4170 Delegation of authority of administration to the Tribe.
49.4171 General provisions.
49.4172 Emissions Inventory.
49.4173 VOC emissions control requirements for storage vessels.
49.4174 VOC emissions control requirements for dehydrators.
49.4175 VOC emissions control requirements for pneumatic pumps.
49.4176 VOC emissions control requirements for covers and closed-vent 
systems.
49.4177 VOC emissions control devices.
49.4178 VOC emissions control requirements for fugitive emissions.
49.4179 VOC emissions control requirements for tank truck loading.
49.4180 VOC emissions control requirements for pneumatic controllers.
49.4181 Other combustion devices.
49.4182 Monitoring and testing requirements.
49.4183 Recordkeeping requirements.
49.4184 Notification and reporting requirements.

    We do not expect a substantial number of the existing oil and 
natural gas sources subject to this U&O FIP to also be subject to NSPS 
OOOO or OOOOa, or NESHAP HH, for the specific equipment and activities 
regulated. However, to minimize regulatory burdens where such a 
potential overlap does exist, this rule finalizes the proposed 
provisions that equipment or activities that are affected

[[Page 75347]]

by any requirement in this U&O FIP and that are also subject to the 
substantive emissions control requirements in those EPA standards will 
not be subject to this FIP's substantive emissions control requirements 
for such equipment and activities. As an example, given the exemptions 
being finalized, if an existing, new, or modified oil and natural gas 
source on Indian country lands within the U&O Reservation has storage 
vessels, pneumatic pumps, and fugitive emissions components that are 
subject to the emissions control requirements of NSPS OOOOa, then that 
source would be subject to the substantive emissions control 
requirements for glycol dehydrators in the FIP, but not to the FIP's 
substantive emissions control requirements for storage vessels, 
pneumatic pumps, or fugitive emissions components.

B. Introduction

    In 40 CFR 49.4169 (Introduction) we are finalizing our proposal to 
specify: (1) the purpose of this U&O FIP; (2) the general applicability 
of this U&O FIP; and (3) the compliance schedule for this U&O FIP.
    We are finalizing text that: (1) establishes provisions for 
delegation of authority to allow the Ute Indian Tribe to assist the EPA 
with administration of this U&O FIP in 40 CFR 49.4170; (2) establishes 
general provisions and definitions applicable to oil and natural gas 
sources in 40 CFR 49.4171; (3) establishes a requirement for oil and 
natural gas sources to submit emissions inventories on a triennial 
basis, beginning with an inventory for calendar year 2023 in 40 CFR 
49.4172; and (4) establishes, in 40 CFR 49.4173 through 49.4184, 
enforceable requirements to control and reduce VOC emissions from oil 
and natural gas well production and storage operations, natural gas 
processing, and gathering and boosting operations at oil and natural 
gas sources on Indian country lands within the U&O Reservation.
    This final rule provides that compliance with the rule for oil and 
natural gas sources that commence construction on or after the 
effective date of the final rule is required upon startup. Compliance 
for sources existing as of the effective date of the final rule is 
required no later than 12 months after the effective date of the final 
rule. We concluded that it is important to allow owners/operators of 
existing sources a reasonable period of time to conduct any necessary 
retrofit-related activities, such as (1) acquiring control devices, (2) 
conducting manufacturer-recommended testing to be compliant with the 
requirements, and (3) securing the necessary trained personnel to 
install compliant devices and associated piping and instrumentation. We 
expect that there will be about 2,165 existing oil and natural gas 
sources that may require equipment retrofit and installation of VOC 
emission control equipment (combustion controls) under the final rule. 
Additionally, we estimate that more than 700 high-bleed pneumatic 
controllers will need to be retrofitted to low-or no-bleed. We have 
determined that providing 12 months from the effective date of the 
final rule to install retrofits at existing sources is a reasonable 
amount of time for efficient, cost-effective project planning that 
accounts for a level, sustained equipment and labor resource demand 
that can be supported by the vendor community, while ensuring that 
meaningful emissions reductions will be achieved that provide near-term 
benefits to improve air quality and make progress toward future 
attainment.\80\
---------------------------------------------------------------------------

    \80\ 12 months is a tighter compliance timeframe than is 
required for existing sources in NESHAP regulations, which is 
typically 3 years. The purpose of this proposed U&O FIP, though, is 
to address air quality in a timely fashion. Moreover, the final rule 
allows sources to request extensions of the compliance date beyond 
the 12 months if needed.
---------------------------------------------------------------------------

    We are also finalizing a provision to allow an owner or operator on 
a case-specific basis to submit a written request to the EPA for an 
extension of the compliance deadline for existing sources, which must 
include appropriate justification of the reason for the request. Any 
approval or denial of an extension request, including the length of any 
approved extension, will be based on the merits of each case. Factors 
that the EPA will consider in deciding whether to grant an extension 
request under the provision include the economic and technical 
feasibility of meeting this U&O FIP's control requirements in the 
prescribed timeframe. The final FIP specifies the criteria that the EPA 
will apply in responding to requests for extension of the compliance 
period, including that the request must be submitted before the 
compliance deadline, must identify the specific provisions for which an 
extension is being requested and include an alternative compliance 
deadline, and must provide a rationale for the request with supporting 
information explaining how the operator will effectively meet all 
applicable requirements after the requested alternative compliance 
deadline.

C. Provisions for Delegation of Administration to the Ute Indian Tribe

    We are establishing in 40 CFR 49.4170 (Delegation of authority of 
administration to the Tribe) the steps by which the Ute Indian Tribe 
may request delegation to assist us with the administration of this 
rule, and the process by which the Regional Administrator of EPA Region 
8 may delegate to the Ute Indian Tribe the authority to assist with 
such administration. As described in the regulatory provisions, any 
such delegation will be accomplished through a delegation of authority 
agreement between the Regional Administrator and the Tribe. This 
section provides for administrative delegation of this federal rule and 
does not affect the TAS eligibility criteria under CAA section 301(d) 
and 40 CFR 49.6 should the Ute Indian Tribe decide to seek such 
treatment for the purpose of administering its own EPA-approved TIP 
under tribal law. Administrative delegation is a separate process from 
TAS under the TAR. Under the TAR, Indian tribes seek the EPA's approval 
of their eligibility to implement CAA programs under their own laws. 
The Ute Indian Tribe will not need to seek TAS under the TAR for 
purposes of requesting to assist us with administration of this rule 
through a delegation of authority agreement. If delegation does occur, 
the rule would continue to operate under federal authority on Indian 
country lands within the U&O Reservation, and the Ute Indian Tribe 
would assist us with administration of the rule to the extent specified 
in the agreement.

D. General Provisions

    We are finalizing in 40 CFR 49.4171 (General provisions): (1) a 
requirement to design, operate, and maintain all equipment used for 
hydrocarbon liquid and gas collection, storage, processing, and 
handling operations covered under this rule, in a manner consistent 
with good air pollution control practices and that minimizes leakage of 
VOC emissions to the atmosphere. Determination of whether acceptable 
operating and maintenance procedures are being used will be based on 
information available to the EPA, including monitoring results, review 
of operating and maintenance procedures, and inspection of the source; 
and (2) definitions.

E. Emissions Inventory Requirements

    We are finalizing in 40 CFR 49.4172 a requirement for owners/
operators of oil and natural gas sources with the

[[Page 75348]]

potential to emit one or more NSR-regulated pollutants at levels 
greater than one tpy to submit an annual emissions inventory, once 
every three years beginning with calendar year 2024, that covers 
emissions from the previous calendar year (2023 for the first required 
inventory). Each triennial inventory must be submitted no later than 
April 15th of the year after each inventory year. The triennial 
emissions inventory requirement will suffice for the purpose of 
continued updates to the comprehensive Uinta Basin oil and natural gas 
emissions inventory by the UDEQ, the Ute Indian Tribe, and the EPA. 
Owners/operators must submit actual emissions for each emissions unit 
at each oil and natural gas source covered by the requirement in a 
standard format specified by the Regional Office and available on our 
website. The format will be consistent with the format used by the UDEQ 
to collect information from sources in the Uinta Basin outside of 
Indian country lands within the U&O Reservation.

F. VOC Emissions Control Requirements

    The discussion in this section details the final VOC emissions 
control requirements of this FIP and how they compare to existing state 
and federal requirements for the equipment and activities listed in 
Table 3. The most notable difference between the final VOC emissions 
control requirements of this FIP and the Utah Oil and Gas Rules \81\ 
and Utah Permit Requirements \82\ is that the Utah permit by rule's 4 
tpy total VOC emissions threshold for requiring controls does not 
include pneumatic pump emissions. We have determined that emissions 
from pneumatic pumps are a large source of VOC emissions on the Indian 
country lands within the U&O Reservation, but a negligible source of 
VOC emissions in the areas in the Basin where the EPA has approved the 
UDEQ to implement the CAA. This difference in the share of pneumatic 
pumps emissions in the inventory is because the majority of natural gas 
production operations, which use gas-driven pneumatic pumps, occurs on 
the Reservation, while lands where air quality is managed by the UDEQ 
feature mostly oil production. This difference is explained in more 
detail later in this section.
---------------------------------------------------------------------------

    \81\ Utah Administrative Code Chapter R307-500 Series (Oil and 
Gas), available in the docket for this rulemaking (Docket ID No. 
EPA-R08-OAR-2015-0709). These rules, referred to collectively as the 
``Utah permit by rule,'' are state-only rules and the UDEQ has not 
submitted them to the EPA for approval in the Utah SIP.
    \82\ Utah Administrative Code Chapter R307-401 (Permits: New and 
Modified Sources), available in the docket for this rulemaking 
(Docket ID No. EPA-R08-OAR-2015-0709); See 40 CFR part 52, subpart 
TT.
    \83\ The National O&NG FIP incorporates the requirements of the 
eight standards, as they apply to a source. To make emissions 
control requirements across the Basin consistent, this U&O FIP goes 
beyond the eight federal standards to regulate certain equipment and 
activities that are not regulated by established EPA standards (or 
are regulated differently) but are regulated in UDEQ standards. In 
addition, the EPA issued subsequent rules that revised certain 
provisions of NSPS OOOO and OOOOa (The 2020 Policy Rule and 2020 
Technical Rule; see discussion above in Section I.B.). The 2021 CRA 
resolution disapproved the policy amendments of NSPS OOOO and OOOOa. 
PL 17-23 (June 30, 2021). The requirements summarized in this table 
reflect the standards that are in effect today--the methane 
standards in the 2016 NSPS OOOOa and the 2016 VOC standards in NSPS 
OOOO and OOOOa, as they were amended in 2020. The EPA's Oil and 
Natural Gas Sector Climate Review Proposed Rule would revise 
existing VOC standards under NSPS OOOO and OOOOa, establish new 
methane and VOC standards for new and modified emissions sources not 
previously covered by NSPS OOOO and OOOOa, and establish emissions 
guidelines for existing sources. This table does not reflect those 
proposed standards and guidelines. We may revisit this final action 
in the future based on any final action we take under CAA section 
111 with the Oil and Natural Gas Sector Climate Review rulemaking.

   Table 3--U&O FIP VOC Emissions Control Requirements for Existing, New, and Modified Oil and Natural Gas Sources Versus UDEQ and Other Federal \83\
                                                                  Control Requirements
--------------------------------------------------------------------------------------------------------------------------------------------------------
                     U&O FIP VOC Emissions Controls                        Utah oil and gas
-------------------------------------------------------------------------   rules and Utah
 Final FIP requirements (section     Applicability    Control efficiency        permit             NSPS OOOO          NSPS OOOOa           NESHAP HH
       in 40 CFR  part 49)             threshold           (percent)         requirements
--------------------------------------------------------------------------------------------------------------------------------------------------------
Storage vessel VOC emission       Source-wide         Reduce VOC by 95.0  Issued Utah Permit  Reduce VOC by 95.0  Reduce VOC by 95.0  Reduce HAP by 95.0
 control requirements (Sec.        potential for VOC   percent or route    Requirements        percent or route    percent or route    percent or route
 49.4173).                         emissions from      to a process.       (BACT for site-     to a process for    to a process for    to a process for
                                   the collection of  See also VOC         specific &          individual          individual          individual
                                   all storage         emission control    general approval    storage vessels     storage vessels     storage vessels
                                   vessels,            devices later in    orders)--Reduce     with potential      with potential      with potential
                                   dehydrators and     this table (Sec.    VOC by 98 percent   for >=6 tpy per     for >=6 tpy per     for flash
                                   pneumatic pumps      49.4177).          or route to a       storage vessel      storage vessel      emissions and
                                   >=4 tpy.                                process where       constructed,        constructed,        actual annual
                                                                           source-wide         reconstructed or    reconstructed or    average
                                                                           uncontrolled        modified after      modified after      hydrocarbon
                                                                           actual VOC          August 23, 2011,    September 18,       liquid throughput
                                                                           emissions from      and on or before    2015                >=79,500 liters/
                                                                           the collection of   September 18,       (alternatively,     day.
                                                                           all storage         2015                no control
                                                                           vessels,            (alternatively,     required if
                                                                           dehydrators and     no control          uncontrolled
                                                                           pneumatic pumps     required if         actual VOC
                                                                           >=4 tpy.            uncontrolled        emissions
                                                                          Utah Oil and Gas     actual VOC          maintained <4tpy).
                                                                           Rules--Reduce VOC   emissions
                                                                           by 95 percent or    maintained <4
                                                                           route to a          tpy).
                                                                           process if total
                                                                           uncontrolled
                                                                           actual emissions
                                                                           from the
                                                                           collection of
                                                                           dehydrators and
                                                                           storage vessels
                                                                           >=4 tpy VOC (does
                                                                           not include
                                                                           pneumatic pump
                                                                           emissions), or if
                                                                           source with
                                                                           storage vessels
                                                                           only has through
                                                                           put >=8,000 bbl
                                                                           crude oil or
                                                                           2,000 bbl
                                                                           condensate, on
                                                                           rolling 12-month
                                                                           basis--unless <=4
                                                                           tpy source-wide
                                                                           uncontrolled
                                                                           actual emissions
                                                                           of VOC from the
                                                                           collection of all
                                                                           storage vessels.

[[Page 75349]]

 
Dehydrators VOC emission control                      See VOC emission    Issued Utah Permit  Not covered.......  Not covered.......  For units at major
 requirements (Sec.   49.4174).                        control devices     Requirements                                                HAP sources and
                                                       later in this       (BACT for site-                                             non-urban area
                                                       table (Sec.         specific &                                                  sources with
                                                       49.4177).           general approval                                            actual annual
                                                                           orders)--Reduce                                             average flowrate
                                                                           VOC by 98 percent                                           of natural gas
                                                                           or route to a                                               >=85,000 standard
                                                                           process where                                               m3/day, reduce
                                                                           source-wide                                                 HAP by 95.0
                                                                           uncontrolled                                                percent or route
                                                                           actual VOC                                                  to a process.
                                                                           emissions from                                             Units with actual
                                                                           the collection of                                           annual average
                                                                           all storage                                                 flowrate of
                                                                           vessels,                                                    natural gas
                                                                           dehydrators and                                             <85,000 standard
                                                                           pneumatic pumps                                             m3/day not
                                                                           >=4 tpy.                                                    covered--this is
                                                                          Utah Oil and Gas                                             the majority of
                                                                           Rules--Reduce VOC                                           units on Indian
                                                                           by 95 percent if                                            country lands
                                                                           total                                                       within the U&O
                                                                           uncontrolled                                                Reservation.
                                                                           actual emissions
                                                                           from the
                                                                           collection of
                                                                           dehydrators and
                                                                           storage vessels
                                                                           >=4 tpy VOC (does
                                                                           not include
                                                                           pneumatic pump
                                                                           emissions).
Pneumatic pumps VOC emission                          See VOC emission    Issued Utah Permit  Not covered.......  Reduce VOC by 95.0  Not covered.
 control requirements (Sec.                            control devices     Requirements                            percent (if
 49.4175).                                             later in this       (BACT for site-                         control device is
                                                       table (Sec.         specific &                              already on site)
                                                       49.4177).           general approval                        or route to a
                                                                           orders)--Reduce                         process (if
                                                                           VOC by 98 percent                       technically
                                                                           or route to a                           feasible) for
                                                                           process where                           natural gas-
                                                                           source-wide                             driven diaphragm
                                                                           uncontrolled                            pneumatic pumps
                                                                           actual VOC                              at well sites
                                                                           emissions from                          constructed,
                                                                           the collection of                       reconstructed or
                                                                           storage vessels,                        modified after
                                                                           dehydrators and                         September 18,
                                                                           pneumatic pumps                         2015.
                                                                           >=4 tpy.                               Zero natural gas
                                                                          Utah Oil and Gas                         emissions for
                                                                           Rules does not                          natural gas
                                                                           require control                         processing plants
                                                                           of pneumatic pump                       constructed after
                                                                           emissions.                              September 18,
                                                                                                                   2015.
Covers and closed-vent system     Source-wide         100 percent of VOC  100 percent of      100 percent of      100 percent of      100 percent of HAP
 VOC emission control              potential for VOC   emissions routed    storage vessel,     storage vessel      storage vessel      emissions, if
 requirements (Sec.   49.4176).    emissions from      to process or       dehydrator and      VOC emissions       emissions routed    required to
                                   the collection of   control device.     pneumatic pump      routed to control   to control device   control glycol
                                   all storage                             emissions routed    device or process.  or process.         dehydrators and/
                                   vessels,                                to control device                                           or storage
                                   dehydrators and                         or process in                                               vessels.
                                   pneumatic pumps                         issued Utah
                                   >=4 tpy.                                Permit
                                                                           Requirements and
                                                                           Rules (BACT for
                                                                           site-specific &
                                                                           general approval
                                                                           orders).
                                                                          Utah Oil and Gas
                                                                           Rules--100
                                                                           percent storage
                                                                           vessel and
                                                                           dehydrator
                                                                           emissions routed
                                                                           to control device
                                                                           or process (Utah
                                                                           Oil and Gas Rules
                                                                           do not include
                                                                           routing pneumatic
                                                                           pump emissions).
VOC emission control devices      Source-wide         95.0 percent        98.0 percent        95.0 percent        95.0 percent        If required to
 (Sec.   49.4177).                 potential for VOC   continuously.       continuous VOC      continuous VOC      continuous VOC      control glycol
                                   emissions from                          control             control             control             dehydrator or
                                   the collection of                       efficiency for      efficiency.         efficiency.         storage vessel
                                   all storage                             Issued Utah                                                 HAP emissions,
                                   vessels,                                Permit                                                      must reduce HAP
                                   dehydrators and                         Requirements                                                by 95.0 percent,
                                   pneumatic pumps                         (BACT for site-                                             or maintain <20
                                   >=4 tpy.                                specific &                                                  parts per million
                                                                           general approval                                            volume (ppmv) or
                                                                           orders).                                                    1 tpy benzene.
                                                                          95 percent
                                                                           continuous
                                                                           control
                                                                           efficiency for
                                                                           Utah Oil and Gas
                                                                           Rules.

[[Page 75350]]

 
Fugitive emissions VOC emission   Source-wide         NA-Semi-annual      Utah Oil and Gas    For natural gas     For well sites and  Ensure closed-vent
 control requirements (Sec.        potential for VOC   surveys.            Rules--semi-        processing plants   compressor          system operates
 49.4178).                         emissions from                          annual surveys at   constructed,        stations            with no
                                   the collection of                       all registered      reconstructed, or   constructed,        detectable
                                   all storage                             well sites          modified after      reconstructed or    emissions if
                                   vessels,                                required to         August 23, 2011,    modified after      required to
                                   dehydrators and                         control storage     and on or before    September 18,       control glycol
                                   pneumatic pumps                         vessel and/or       September 18,       2015--Fugitive      dehydrator or
                                   >=4 tpy.                                dehydrator VOC      2015--LDAR          emissions surveys   storage vessel
                                  Or................                       emissions.          requirements as     using OGI           HAP emissions.
                                  Well site                               Issued Utah Permit   referenced in       conducted
                                   production >15                          Requirements        NSPS VVa, with      semiannually
                                   boe per day                             (sources exempt     periodic EPA        (well sites) and
                                   (rolling                                from Utah Oil and   Method 21 surveys   quarterly
                                   consecutive 12-                         Gas Rules)          on specific         (compressor
                                   month average).                         require LDAR,       equipment types.    stations).
                                                                           ranging from                           For natural gas
                                                                           annual to                               processing plants
                                                                           quarterly for all                       constructed,
                                                                           approved (i.e.,                         reconstructed or
                                                                           permitted) oil                          modified after
                                                                           and natural gas                         September 18,
                                                                           sources,                                2015--LDAR
                                                                           including                               requirements as
                                                                           compressor                              referenced in
                                                                           stations.                               NSPS VVa, with
                                                                                                                   periodic EPA
                                                                                                                   Method 21 surveys
                                                                                                                   on specific
                                                                                                                   equipment types.
Tank truck loading VOC emission   None--applies to    NA--Bottom filling  Utah Oil and Gas    Not covered.......  Not covered.......  Not covered.
 control requirements (Sec.        all existing        or submerged fill   Rules--more
 49.4179).                         sources.            pipe.               stringent, as
                                                                           capture and
                                                                           control of VOC
                                                                           emissions (95
                                                                           percent
                                                                           efficiency)
                                                                           required at
                                                                           registered
                                                                           sources required
                                                                           to control
                                                                           storage vessel
                                                                           and glycol
                                                                           dehydrator
                                                                           emissions.
Pneumatic controllers VOC                             NA--meet the        Utah Oil and Gas    For continuous      For continuous      Not covered.
 emission control requirements                         standards of NSPS   Rules--Meet         bleed natural gas   bleed natural gas
 (Sec.   49.4180).                                     OOOO or OOOOa.      standards of NSPS   driven pneumatic    driven pneumatic
                                                                           OOOO.               controllers         controllers
                                                                                               constructed,        constructed,
                                                                                               reconstructed or    reconstructed or
                                                                                               modified after      modified after
                                                                                               October 15, 2013    September 18,
                                                                                               and on or before    2015, zero-bleed
                                                                                               September 18,       for processing
                                                                                               2015, zero-bleed    plants and low-
                                                                                               for processing      bleed (<6 scfh)
                                                                                               plants and low-     elsewhere.
                                                                                               bleed (<6 scfh)
                                                                                               elsewhere.
Other combustion devices (Sec.                        NA--must be         Utah Oil and Gas    Not covered.......  Not covered.......  Not covered.
 49.4181).                                             equipped with       Rules--must be
                                                       automatic           equipped with
                                                       ignition device.    automatic
                                                                           ignition device.
--------------------------------------------------------------------------------------------------------------------------------------------------------

1. Storage Vessels, Glycol Dehydrators, and Pneumatic Pumps
    For existing, new, and modified sources, we are finalizing in 40 
CFR 49.4173 (Storage vessel VOC emission control requirements), 40 CFR 
49.4174 (Dehydrators VOC emission control requirements), and 40 CFR 
49.4175 (Pneumatic pumps VOC emission control requirements) the 
requirement that owners and operators of affected storage vessels, 
glycol dehydrators, and natural gas-driven pneumatic pumps either: (1) 
reduce VOC emissions from flashing, working, standing, and breathing 
losses from the collection of all crude oil, condensate, intermediate 
hydrocarbon and produced water storage vessels, glycol dehydrator 
process vents (glycol dehydrator regenerator or still vent and the vent 
from the dehydrator flash tank, if present), and pneumatic pumps, by at 
least 95.0 percent on a continuous basis; or (2) maintain the source-
wide uncontrolled actual VOC emissions from the collection of all 
storage vessels, glycol dehydrators, and pneumatic pumps at a rate of 
less than 4 tpy. We are finalizing the requirement that applicability 
for the VOC emissions control requirements be determined specifically 
according to the following criteria. For oil and natural gas sources 
that began operation before the effective date of the final rule, we 
are requiring that applicability be determined using potential for VOC 
emissions. Potential for VOC emissions must be calculated using a 
generally accepted model or calculation methodology based on the 
maximum average daily throughput, as determined for existing sources 
using the highest 30-day period of production in the 12 consecutive 
months before the compliance deadline of the rule for each affected 
source. The determination may take into account requirements under 
legally and practicably enforceable limits in an applicable operating 
permit or other applicable federal requirement, such as those in NSPS 
OOOO or OOOOa, or NESHAP HH. For oil and natural gas sources that begin 
operation or modification after the effective date of the final rule, 
we are requiring that applicability for glycol dehydrators and 
pneumatic pumps be determined using potential to emit VOC, and that 
emissions from the collection of all storage vessels be controlled upon 
startup for a minimum of 12 consecutive months. This requirement for 
new and modified storage vessels is being finalized because of the 
uncertainty of well production levels before operation begins. After a 
minimum of 12 consecutive months of operation, controls may be removed 
if source-wide uncontrolled actual VOC emissions from the collection of 
all storage vessels, glycol dehydrators, and pneumatic pumps are 
demonstrated to be less than 4 tpy.
    We are requiring that owners or operators demonstrate that the 
source-wide uncontrolled actual VOC emissions from the collection of 
all

[[Page 75351]]

crude oil, condensate, intermediate hydrocarbon liquids and produced 
water storage vessels, glycol dehydrator process vents, and pneumatic 
pumps have been maintained below 4 tpy, using records of monthly 
determinations of uncontrolled actual VOC emission rates for the 12 
consecutive months immediately preceding the demonstration. The 
uncontrolled actual VOC emissions rate must be calculated using a 
generally accepted model or calculation methodology.
    The final rule requires that the owner or operator re-evaluate the 
source-wide uncontrolled actual VOC emissions on a monthly basis. If 
the results of the monthly determination show that the uncontrolled 
actual VOC emission rate is greater than or equal to 4 tpy, the owner 
or operator will have 30 days to switch to the first option specified 
and control VOC emissions by at least 95 percent continuously. We are 
finalizing an exemption to the VOC emissions control requirements for 
each emergency storage vessel that meets the following requirements: 
(1) the storage vessel is not used as an active storage vessel; (2) the 
owner or operator empties the storage vessel no later than 15 days 
after receiving fluids; (3) the storage vessel is equipped with a 
liquid level gauge or equivalent device; and (4) records of the use of 
each vessel are kept indicating the date the vessel received fluids or 
was discovered to have received fluids, the date the vessel was emptied 
and the volume of fluids emptied in barrels.
    The final VOC emissions control applicability provisions and other 
requirements are the same as or comparable on balance with the 
requirements in the Utah Permit Requirements and/or Utah Oil and Gas 
Rules. The methods for determining applicability of the control 
requirements are the same as those in site-specific minor source BACT 
analyses in the Utah Permit Requirements. In site-specific approval 
orders that have been issued, the UDEQ requires VOC emissions controls 
for source-wide emissions from the collection of all storage vessels, 
glycol dehydrators, and pneumatic pumps at oil and natural gas sources 
\84\ when the source-wide potential for VOC emissions from that 
equipment is greater than or equal to 4 tpy. We have also determined 
that controlling emissions above the 4 tpy VOC level is cost-effective 
and will achieve meaningful emissions reductions on Indian country 
lands within the U&O Reservation.\85\ The methods for determining 
applicability of the control requirements are comparable on balance 
with the UDEQ's recently adopted Utah Oil and Gas Rules, except that 
those rules do not consider emissions from or control of pneumatic 
pumps.\86\ The reason for this difference is discussed later when we 
describe this FIP's requirements for pneumatic pumps. The Utah Oil and 
Gas Rules require all new and modified storage vessels (i.e., those 
that begin operation on or after January 1, 2018) to control emissions 
upon startup of operation for a minimum of one year. The requirement in 
this FIP to control emissions from the collection of all new and 
modified storage vessels for at least 12 consecutive months, the 
exemption for emergency storage vessels, and the provision allowing 
removal of controls from the collection of all storage vessels, glycol 
dehydrators, and pneumatic pumps are also the same as the requirements 
in the Utah Oil and Gas Rules, with the exception of pneumatic pump 
emissions and control mentioned earlier, which will be discussed in 
more detail later.
---------------------------------------------------------------------------

    \84\ The docket for this rulemaking contains several examples of 
UDEQ site-specific minor source NSR permits (approval orders) for 
Crude Oil and Natural Gas Well Sites and/or Tank Batteries (DAQE-
AN151010001-15, DAQE-AN149250001-14, and DAQE-AN143640003-15). UDEQ 
site-specific approval order requirements are based on BACT analyses 
for oil and natural gas sources concluding that combustion of VOC 
emissions from crude oil and condensate storage tanks, glycol 
dehydrators, and pneumatic pumps is economically and technically 
feasible when the source-wide potential for VOC emissions from those 
emissions sources is equal to or greater than 4 tpy. The analyses 
rely in part on the EPA's analysis in the April 12, 2013 NSPS OOOO 
reconsideration, and the finding that emissions from those three 
emissions sources at a single source can feasibly be routed to the 
same combustor. Though the 4 tpy threshold is not specifically 
stated in the approval orders, if a source applying for a site-
specific approval order has source-wide storage tank, glycol 
dehydrator, and pneumatic pump VOC emissions equal to or greater 
than 4 tpy, the order contains requirements to control those 
emissions.
    \85\ The RIA in the docket for this rulemaking (Docket ID No. 
EPA-R08-OAR-2015-0709) contains more detailed information on our 
analyses.
    \86\ In response to an EPA comment on UDEQ's proposal 
questioning why issued approval orders and the GAO cover pneumatic 
pumps, but the new Utah Oil and Gas Rules do not, the UDEQ stated 
that the 2014 Uinta Basin Emissions Inventory indicated that 
pneumatic pump emissions constitute an insignificant portion of the 
total VOC emissions at Utah-regulated sources in the Basin. The 
comments and UDEQ's responses are available in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

    We are finalizing the option that the owner or operator capture and 
route all subject emissions through a closed-vent system to an enclosed 
combustor or flare that is designed and operated to reduce the mass 
content of VOC in the emissions vented to it by at least 95.0 percent. 
Requirements for closed-vent systems are established under conditions 
specified in 40 CFR 49.4176 (VOC emission control requirements for 
covers and closed-vent systems), and requirements for operation and 
monitoring of control devices are established under conditions 
specified in 40 CFR 49.4177 (VOC Emission Control Devices) and 40 CFR 
49.4182 (Monitoring Requirements), all of which are discussed in detail 
below in the summaries of Covers, Closed-Vent Systems, and VOC Emission 
Control Devices and Monitoring Requirements.
    We are finalizing the alternative option that the owner or operator 
design operations to recover 100 percent of the emissions and recycle 
them for use in a process unit or incorporate them into a product. 
These control options are the same as the Utah Permit Requirements and 
the Utah Oil and Gas Rules.
    As described earlier, regulating pneumatic pumps in this U&O FIP is 
not comparable to the UDEQ's Utah Oil and Gas Rules, because those 
rules do not include requirements for pneumatic pumps.\87\ But the 
approach in this U&O FIP to controlling pneumatic pumps by routing 
emissions to the same control device that controls emissions from the 
collection of all storage vessels and glycol dehydrators is the same as 
the UDEQ's approach to controlling pneumatic pumps in site-specific 
approval orders issued under Utah Permit Requirements. We are confident 
that this approach will help achieve ozone air quality improvements 
through this U&O FIP, as the UBEI2017-Update shows that VOC emissions 
from pneumatic pumps constitute 16 percent of the total oil and natural 
gas-related VOC emissions on Indian country lands within the U&O 
Reservation.\88\
---------------------------------------------------------------------------

    \87\ We note that the Utah Oil and Gas Rules do not contain 
requirements for pneumatic pumps. We are finalizing requirements for 
pneumatic pumps requirements, as we have identified emissions from 
existing pneumatic pumps as being a significant source of VOC 
emissions on the Indian country lands within the U&O Reservation.
    \88\ By contrast, the UBEI2017-Update shows that there are a 
very low number of pneumatic pumps installed and operating on lands 
in areas of the Basin where the EPA has approved the UDEQ to 
implement the CAA; the UDEQ has stated that this fact is the reason 
the Utah Oil and Gas Rules do not have control requirements for 
pneumatic pumps (see the response to comments on the UDEQ's proposed 
rules in the docket for this rulemaking).
---------------------------------------------------------------------------

    We do not expect that a substantial number of existing oil and 
natural gas sources that would meet the applicability criteria of this 
U&O FIP will also be subject to NSPS OOOO or OOOOa, or NESHAP HH. 
However, to address any potential regulatory overlap, we are providing 
that any affected storage vessels, glycol dehydrators, or pneumatic 
pumps that

[[Page 75352]]

are subject to the emissions control requirements in those EPA 
standards, are not subject to the requirements in this U&O FIP for such 
equipment and activities, including monitoring, recordkeeping, and 
reporting requirements associated with such equipment and activities.
2. Covers, Closed-Vent Systems
    For affected existing, new, and modified sources that are required 
to control emissions from the collection of all storage vessels, glycol 
dehydrators and pneumatic pumps per 40 CFR 49.4173 through 49.4175, we 
are finalizing in 40 CFR 49.4176 (VOC emission control requirements for 
covers and closed-vent systems) to require, as applicable, the use of 
covers on all storage vessels, and the use of closed-vent systems with 
equipment that captures and routes VOC emissions to the respective 
vapor recovery or VOC emission control devices. Because closed-vent 
systems are common to control requirements for storage vessels, glycol 
dehydrators and pneumatic pumps, we are finalizing these requirements 
in a separate section to avoid redundancy. Section 49.4176 also 
specifies construction and operational requirements for the covers and 
closed-vent systems. The construction and operational requirements for 
the covers and closed-vent systems are intended to provide legal and 
practical enforceability to ensure that all captured VOC emissions are 
routed to the respective vapor recovery or VOC emission control 
devices. In addition, for affected existing, new, and modified sources 
that are required to control emissions from the collection of all 
storage vessels, glycol dehydrators and pneumatic pumps, in 40 CFR 
49.4177 (VOC emission control devices) we are finalizing specific 
legally and practicably enforceable construction and operational 
requirements for enclosed combustors and flares.
    We are finalizing in 40 CFR 49.4176 (VOC emission control 
requirements for covers and closed-vent systems) the requirement that 
each owner or operator equip the openings on each affected storage 
vessel with a cover that ensures that flashing, working, standing and 
breathing losses are efficiently routed through a closed-vent system to 
a vapor recovery system, an enclosed combustor, or a flare. We are 
finalizing the requirement that each cover and all openings on the 
cover (e.g., access hatches, sampling ports, and gauge wells) form a 
continuous barrier over the entire surface area of the crude oil, 
condensate, intermediate hydrocarbon liquids or produced water in the 
storage vessel. Each cover opening must be secured in a closed, sealed 
position (i.e., covered by a gasketed lid or cap) whenever material is 
in the storage vessel on which the cover is installed, except when it 
is necessary to use an opening to: (1) add material to, or remove 
material from the unit (this includes openings necessary to equalize or 
balance the internal pressure of the unit following changes in the 
level of the material in the unit); (2) inspect or sample the material 
in the unit; or (3) inspect, maintain, repair, or replace equipment 
inside the unit.
    We are requiring that all vent lines, connections, fittings, 
valves, relief valves, and any other appurtenance employed to contain 
and collect emissions and transport them to the vapor recovery or VOC 
control equipment be maintained and operated properly at all times, and 
that they be designed to operate with no detectable emissions. If a 
closed-vent system contains one or more bypass devices that could be 
used to divert all or a portion of the emissions from entering the 
vapor recovery or VOC control devices, we are requiring that the owner 
or operator meet one of the following options for each bypass device: 
(1) at the inlet to the bypass device, properly install, calibrate, 
maintain, and operate a flow indicator capable of taking periodic 
readings and sounding an alarm when the bypass device is open such that 
the emissions are being, or could be, diverted away from the control 
device and into the atmosphere; or (2) secure the bypass device valve 
in the non-diverting position using a car-seal or a lock-and-key type 
configuration.
    The cover and closed-vent system requirements are comparable on 
balance with UDEQ requirements for storage vessels in both the issued 
site-specific approval orders and the Utah Oil and Gas Rules. The site-
specific approval orders require storage vessel thief hatches to be 
closed and latched except during storage vessel unloading or other 
maintenance activities. They also require that thief hatches be 
inspected once every three months to ensure that thief hatches are 
closed and latched, and that any associated gaskets are in good working 
condition. Similarly, the Utah Oil and Gas Rules for storage vessels 
require thief hatches to be kept closed and latched except during 
unloading or maintenance. The U&O FIP requirements for covers and 
closed-vent systems were developed by consulting the cover and closed-
vent system requirements of EPA standards, such as OOOO and OOOOa and 
NESHAP HH. For ease of implementation, these requirements provide more 
detail than the UDEQ requirements in both the issued site-specific 
approval orders and the Utah Oil and Gas Rules but are comparable on 
balance with the UDEQ requirements for storage vessels and closed-vent 
systems.
3. VOC Emission Control Devices
    For existing, new, and modified sources that are required to 
control VOC emissions from the collection of all storage vessels, 
glycol dehydrators and pneumatic pumps, we are finalizing requirements 
in 40 CFR 49.4177 (VOC emission control devices) that each owner or 
operator follow the manufacturer's written operating instructions, 
procedures and maintenance schedules to ensure the use of good air 
pollution control practices for minimizing emissions from each enclosed 
combustor and flare. Each flare must be designed and operated according 
to the requirements of 40 CFR 60.18(b). Each enclosed combustor must be 
designed and operated to reduce the mass content of the VOC in the 
natural gas routed to it by at least 95.0 percent continuously. The 
control efficiency required for each VOC emissions control device is 
the same as the Utah Oil and Gas Rules.
    We recognize that the site-specific approval orders issued to 
existing sources under the Utah Permit Requirements require control 
devices to meet 98 percent VOC control efficiency. But we have 
concluded that the differences between this U&O FIP, the Utah Oil and 
Gas Rules, and the Utah Permit Requirements are minimal, and all were 
designed to achieve a consistent result. The UDEQ requires permittees 
of minor oil and natural gas sources to show compliance with 98.0 
percent VOC control device control efficiency by routing all exhaust 
gas/vapors (from the storage vessels, glycol dehydrators or pneumatic 
pumps) to the operating combustor, operating the device according to 
the manufacturer's written instructions when gases/vapors are routed to 
it, operating the device with no visible emissions, and by performing 
tests to visually determine smoke emissions according to EPA Method 22 
at 40 CFR part 60, appendix A. The Utah Oil and Gas Rules require at 
least 95.0 percent VOC control efficiency and do not specify methods to 
ensure no visible emissions but refer to NSPS OOOOa for demonstrating 
compliance with the control efficiency requirements. We note that 
combustion devices can be designed to meet 98.0 percent control 
efficiencies, and can control emissions by 98.0 percent or

[[Page 75353]]

more, on average, in practice when properly operated.\89\ Combustion 
devices designed to meet 98.0 percent control efficiency may not, 
however, be able to meet this efficiency level continuously in 
practice, due to factors such as the variability of field conditions 
and downtime.
---------------------------------------------------------------------------

    \89\ The EPA has reviewed performance tests submitted for 19 
different makes/models of combustor control devices and confirmed 
they meet the performance requirements in NSPS subpart OOOO and 
NESHAP subparts HH and HHH. All reported control efficiencies were 
above 99.9 percent at tested conditions. EPA notes that the control 
efficiency achieved in the field is likely to be lower than the 
control efficiency achieved at a bench test site under controlled 
conditions, but these units should be able to continuously meet a 
95.0 percent control efficiency level when they are designed, 
monitored and operated in a way that ensures effective performance 
on a continuous basis. See Combustion Device Performance Testing 
Summary Table in the docket for this rule.
---------------------------------------------------------------------------

    During development of NSPS OOOO and OOOOa, 95.0 percent control 
efficiency was determined to be the best system of emission reduction 
(BSER) able to be continuously achieved by affected facilities (e.g., 
storage vessels, centrifugal compressors) nationwide. The EPA is aware 
that enclosed combustors and flares may be capable of achieving 
instantaneous control efficiencies greater than 95.0 percent,\90\ but 
in determining BSER the EPA must be confident that the control 
efficiency can be achieved continuously by affected facilities 
nationwide to which it applies. We are confident that combustors and 
flares can meet at least 95.0 percent VOC control efficiency on a 
continuous basis when they are designed, monitored and operated in a 
way that ensures effective performance on a continuous basis. While the 
EPA is aware that combustion devices commonly used to control VOC-
containing gas streams are capable of demonstrating greater than 98.0 
percent continuous VOC control efficiency in a controlled performance 
testing environment, under ideal conditions, based on widespread and 
readily available manufacturer test data,\91\ we are not confident that 
the devices can achieve 98.0 percent continuous VOC control efficiency 
in the field without stronger flare performance requirements than are 
currently in effect today.\92\
---------------------------------------------------------------------------

    \90\ See ``Oil and Natural Gas Sector New Source Performance 
Standards and National Emissions Standards for Hazardous Air 
Pollutants reviews, Parts 60 and 63, Response to Public Comments on 
Proposed Rule, 76 FR 52738 (Aug. 23, 2011), available at https://www.regulations.gov (Docket ID EPA-HQ-OAR-2010-0505 (Section 2.5.4, 
pages 127-128; Section 3.4.1, pages 294-295; and Section 3.5.1, 
pages 302-303)).
    \91\ See Combustion Device Performance Testing Summary Table in 
the docket for this rule.
    \92\ The Oil and Natural Gas Sector Climate Review Proposed Rule 
is soliciting comment and information that would help us better 
understand the cost, feasibility, and emission reduction benefits 
associated with establishing a 98 percent control efficiency 
requirement for flares in the Crude Oil and Natural Gas source 
category, including information on the level of performance being 
achieved in practice by flares in the field, what conditions or 
factors contribute to malfunctions or poor performance at these 
flares, and what measures the EPA could or should require in order 
to ensure that flares perform at a 98 percent level of control. See 
86 FR 63110 (Nov. 15, 2021).
---------------------------------------------------------------------------

    We are requiring that all flares installed per this rule be 
designed and operated in accordance with applicable requirements in 40 
CFR 60.18(b).\93\ We are requiring that all enclosed combustors 
installed per this rule be models: (1) that have been tested by the 
manufacturer in accordance with specific requirements in NSPS OOOO and 
OOOOa; or (2) for which the owner or operator has conducted performance 
testing according to the requirements in NSPS OOOO and OOOOa. The Utah 
Oil and Gas Rules require that compliance for VOC control devices be 
demonstrated by meeting the performance test methods and procedures in 
NSPS OOOO. The Utah Oil and Gas Rules do not distinguish between flares 
and enclosed combustors. We determined, though, that it was important 
to have specific requirements for the different types of control 
devices that may be present at oil and natural gas sources on Indian 
country lands within the U&O Reservation, because EPA standards 
including NSPS OOOO and OOOOa and NESHAP HH make such distinctions for 
legal and practical enforceability. Therefore, although for ease of 
implementation this FIP's requirements for VOC control devices to 
demonstrate compliance with the control efficiency requirements are 
more detailed than the state's, they are comparable on balance with the 
Utah Oil and Gas Rules that reference such requirements in NSPS OOOO, 
as well as with NSPS OOOO and OOOOa and NESHAP HH.
---------------------------------------------------------------------------

    \93\ 40 CFR 60.18(b) for flares requires compliance with 40 CFR 
60.18(c) through (f).
---------------------------------------------------------------------------

    We determined that certain work practice and operational 
requirements are also necessary for the practical enforceability of the 
VOC emission reduction requirements for flares or enclosed combustors. 
We are requiring that flares and enclosed combustors be operated within 
specific parameters to ensure the effective control of VOC 
emissions.\94\ Specifically, we are requiring that each owner or 
operator ensure that each enclosed combustor or flare is: (1) operated 
at all times that emissions are routed to it; (2) equipped and operated 
with a liquid knockout system to collect any condensable vapors (to 
prevent liquids from going through the control device); (3) equipped 
and operated with a flashback flame arrestor; (4) equipped and operated 
with a continuous burning pilot flame, or an electronically controlled 
automatic ignition device; (5) equipped with a monitoring system for 
continuous recording of the parameters that indicate proper operation 
of each continuous burning pilot flame or electronically controlled 
automatic ignition device, such as a chart recorder, data logger or 
similar device, or connected to a Supervisory Control and Data 
Acquisition (SCADA) system, to monitor and document proper operation of 
the enclosed combustor or flare; (6) maintained in a leak-free 
condition; and (7) operated with no visible smoke emissions. These work 
practice and operational requirements are comparable to requirements of 
the Utah Oil and Gas Rules with respect to operation of the control 
devices with no visible emissions.
---------------------------------------------------------------------------

    \94\ The necessity of such a requirement was discussed in detail 
in the preamble and Technical Support Documents to the proposed and 
final NSPS OOOO. These documents can be found in the docket for the 
NSPS OOOO rulemaking (Docket ID EPA-HQ-OAR-2010-0505), available at 
https://www.regulations.gov.
---------------------------------------------------------------------------

    To ensure legal and practical enforceability, other work practice 
and operational requirements in this U&O FIP are different or more 
prescriptive than the Utah Oil and Gas Rules in several areas. For 
example, the Utah Oil and Gas Rules require all VOC emissions control 
devices simply to be equipped and operated with an operational 
automatic ignition device. This U&O FIP, on the other hand, requires 
each enclosed combustor or flare to be equipped and operated with 
either a continuous burning pilot flame or an electronically controlled 
automatic ignition device. Further, under this FIP all enclosed 
combustors and flares must be equipped with a monitoring system for 
continuous measurement and recording of the parameters that indicate 
proper operation of each continuous burning pilot flame or 
electronically controlled automatic ignition device, such as a chart 
recorder, data logger or similar device, or connected to a SCADA system 
to monitor and document proper operation of the device. The work 
practice and operational requirements for VOC control devices in this 
U&O FIP were developed by considering the UDEQ requirements for VOC 
control devices, in combination with consulting the work practice and 
operational requirements for control devices in EPA standards, 
including NSPS OOOO and OOOOa and NESHAP HH. Regarding

[[Page 75354]]

the requirement to equip enclosed combustors and flares with either a 
continuous burning pilot flame or an electronically controlled 
automatic ignition device, provided there is a monitoring system to 
indicate proper operation of the device, the EPA has maintained the 
position as recently as 2016 that without a continuous ignition source, 
there may be periods of uncontrolled emissions, and continuous ignition 
sources are designed to combust the flammable portion of the gas 
stream, even if the gas stream has a low BTU content.\95\ Therefore, we 
have maintained that automatic ignition devices alone may not be 
reliable in the field to ensure that there is an ignition source at all 
times gas is flowing to a control device, and EPA standards, such as 
NSPS OOOO and OOOOa, have commonly required that enclosed combustors be 
equipped with continuous burning pilot flames and continuous parameter 
monitoring systems to ensure the presence of a flame at all times a gas 
stream is routed to the control device. Additionally, since the final 
FIP requires compliance with 40 CFR 60.18(c)(2) \96\ of the General 
Provisions for 40 CFR part 60 when using a flare, a continuous pilot 
flame is required, and we have determined that an equivalent 
requirement should be applicable to enclosed combustion control devices 
used for controlling emissions from storage vessels and other equipment 
at affected oil and natural gas sources.
---------------------------------------------------------------------------

    \95\ The EPA's Response to Public Comments on the EPA's Oil and 
Natural Gas Sector: Emission Standards for New, Reconstructed, and 
Modified Sources. 40 CFR part 60, subpart OOOOa. May 2016. Chapter 
11--Compliance. Comment Excerpt Number: 17. Pages 188-191 (Docket ID 
EPA-HQ-OAR-2010-0505-7632), available at https://www.regulations.gov, accessed Mar. 14, 2022.
    \96\ Per 40 CFR 60.18(b).
---------------------------------------------------------------------------

    We recognize that the UDEQ requires automatic ignition devices on 
all combustion devices. In the interest of establishing regulations on 
Indian country lands within the U&O Reservation that are comparable on 
balance with the UDEQ requirements, we are finalizing a hybrid approach 
that allows owners and operators required to control VOC emissions from 
the collection of all storage vessels, glycol dehydrators, and 
pneumatic pumps the option to use devices that comply with EPA 
standards (continuous burning pilot), or to use electronically 
controlled automatic ignition devices if the control device is also 
equipped with a system that can indicate to the owner and operator that 
the automatic ignition device is not operating properly while gas is 
being routed to the control device. We expect that these requirements 
for control devices will achieve a result comparable to the 
requirements for VOC control devices in the Utah Oil and Gas Rules and 
will ensure that the control device is operated properly to achieve the 
required control efficiency while providing consistency with EPA policy 
regarding flares and combustors.
    Section 49.4177 allows owners or operators of oil and natural gas 
sources, on receiving written approval, to use control devices other 
than an enclosed combustor or flare, provided they continuously achieve 
at least 95.0 percent VOC control efficiency. We expect that this 
provision will allow owners and operators to take advantage of 
technological advances in VOC emission control in the oil and natural 
gas industry, and that it will provide us with valuable information on 
new control technologies.
4. Fugitive Emissions Control
    For existing, new, and modified sources, we are finalizing LDAR 
requirements in 40 CFR 49.4178 (Fugitive emissions VOC emission control 
requirements) that each owner or operator of an oil and natural gas 
source conduct periodic inspections of the source to detect leaks from 
fugitive emissions components and repair them if either of the 
following is true: (1) the collection of fugitive emissions components 
is located at an oil and natural gas source that is required to control 
VOC emissions according to 40 CFR 49.4173 through 49.4177 of this FIP 
(i.e., the source-wide potential for VOC emissions from the collection 
of all storage vessels, glycol dehydrators, and pneumatic pumps is 
equal to or greater than 4 tpy, as determined according to 40 CFR 
49.4173(a)(1)); or (2) the collection of fugitive emissions components 
is located at a well site, as defined in 40 CFR 60.5430a, that at any 
time has total production greater than 15 boe per day based on a 
rolling 12-month average.\97\ Owners and operators of the collection of 
fugitive emissions components for which neither of the aforementioned 
conditions are true have the option to either (1) implement a program 
of periodic fugitive emissions inspections and repair, or (2) 
demonstrate that the total daily oil and natural gas production of the 
collection of all wells producing to the well site is at or below 1 boe 
per day, based on a 12-month rolling average, calculated according to 
specific procedures specified in 40 CFR 49.4178(e). Owners and 
operators of the collection of fugitive emissions components at an oil 
and natural gas source that is subject to the fugitive emissions 
monitoring requirements of NSPS OOOOa are exempt from this FIP's 
fugitive emissions monitoring requirements for those components.
---------------------------------------------------------------------------

    \97\ As explained earlier, the Oil and Natural Gas Sector 
Climate Review Proposed Rule proposes a different approach for LDAR 
applicability based on the level of facility wide methane fugitive 
emissions. We are finalizing these requirements in the interest of 
taking action now to reduce VOC emissions on the Indian country 
lands within the U&O Reservation and recognizing the advantages of 
maximizing emissions reductions while providing a measure of 
consistency with the UDEQ and federal requirements that are in 
effect today. We may revisit this rulemaking in the future based on 
any final action we take under CAA section 111 with the Oil and 
Natural Gas Sector Climate Review rulemaking.
---------------------------------------------------------------------------

    We are finalizing a definition of ``fugitive emissions component'' 
in 40 CFR 49.4171, consistent with the approach in NSPS OOOOa, that 
includes valves, connectors, open-ended lines, pressure relief devices, 
flanges, covers and closed-vent systems not subject to 40 CFR 49.4173 
through 49.4175, thief hatches or other openings on controlled storage 
vessels not subject to 40 CFR 49.4173, compressors, instruments and 
meters.\98\ Each owner or operator is required to develop and implement 
a Reservation-wide fugitive emissions monitoring plan for all of its 
affected oil and natural gas sources on Indian country lands within the 
U&O Reservation that must include the following elements, at a minimum:
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    \98\ Devices that vent as part of normal operations, such as 
natural gas-driven pneumatic controllers or natural gas-driven 
pumps, are not fugitive emissions components, insofar as the natural 
gas discharged from the device's vent is not considered a fugitive 
emission. Emissions originating from other than the vent, such as 
the thief hatch on a controlled storage vessel, would be considered 
fugitive emissions.
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    (1) Conduct an initial monitoring of fugitive emissions components 
at each affected source within 12 months of the effective date of the 
rule.
    (2) Conduct subsequent monitoring once every 6 months after the 
initial monitoring for fugitive emissions components at oil and natural 
gas sources.
    (3) Describe the fugitive emissions detection monitoring method to 
be used (limited to onsite optical gas imaging instruments, with a leak 
defined as any visible emissions using an optical gas imaging 
instrument, EPA Reference Method 21, with an instrument reading of 500 
parts per million volume (ppmv) VOC defined as a leak, or another 
method approved by the EPA other than optical gas imaging or EPA 
Reference Method 21).
    (4) Identification of manufacturer and model number of any leak 
detection equipment to be used.

[[Page 75355]]

    (5) Procedures and timeframes for identifying and repairing 
components from which leaks are detected, including a requirement to 
repair any identified leaks from components that are safe to repair and 
that do not require source shutdown within 30 days of discovering a 
leak, and identification of timeframes (which must be no later than the 
next required monitoring event after discovering the leak) to repair 
leaks that are designated as difficult-to-monitor or unsafe-to-monitor, 
or which require source shutdown. If the repair or replacement of a 
fugitive emissions component designated difficult-to-monitor or unsafe-
to-monitor is technically infeasible, would require a vent blowdown, a 
compressor station shutdown, a well shutdown or shut-in, or would be 
unsafe to repair \99\ during operation of the unit, the repair or 
replacement must be completed during the next scheduled compressor 
station shutdown, well shutdown, well shut-in, after a planned vent 
blowdown, or within 2 years, whichever is earlier.
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    \99\ ``Unsafe to repair'' is defined in the final rule as 
meaning that operator personnel would be exposed to an imminent or 
potential danger as a consequence of the attempt to repair the leak 
during normal operation of the source.
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    (6) Procedures for verifying effective repair of leaking 
components, no later than 30 days after repairing a leak.
    (7) Specific training and experience needed to perform inspections.
    (8) Description of procedures for calibration and maintenance of 
any fugitive emissions monitoring device to be used.
    (9) Standard monitoring protocols for each type of typical affected 
source (e.g., well site, tank battery, compressor station), including a 
general list of component types that will be inspected and what 
supporting data will be recorded (e.g., wind speed, detection method 
device-specific operational parameters, date, time, and duration of 
inspection).
    We are finalizing in 40 CFR 49.4179 an exemption for source owners/
operators from having to monitor and repair a fugitive emissions 
component under certain circumstances: (1) the contacting process 
stream only contains glycol, amine, methanol or produced water; or (2) 
the component to be inspected is buried, insulated in a manner that 
prevents access to the components by a monitor probe or optical gas 
imaging device, or obstructed in a manner that prevents access by a 
monitor probe or optical gas imaging device.
    The fugitive emissions LDAR requirements in this U&O FIP are 
designed to be consistent with those in NSPS OOOOa. In developing the 
final FIP LDAR requirements, we also reviewed the UDEQ requirements. 
For existing, new, and modified sources subject to the Utah Oil and Gas 
Rules, the LDAR requirements were designed to be procedurally 
consistent with NSPS OOOOa, though the applicability threshold is 
different. The UDEQ's site-specific approval orders, a general approval 
order (GAO) for crude oil and natural gas well sites and tank 
batteries,\100\ and the Utah Oil and Gas Rules all require 
implementation of an LDAR program at facilities that are required to 
control storage vessel, dehydrator, and/or pneumatic pump emissions. 
The Utah Oil and Gas Rules require semi-annual fugitive emissions 
monitoring and repair for any affected source. Existing oil and natural 
gas sources that were authorized under the UDEQ's site-specific 
approval orders are required to conduct fugitive emissions monitoring 
and repair at frequencies ranging from annual to quarterly. Existing 
oil and natural gas sources that are authorized under the UDEQ's GAO 
are subject to fugitive emissions monitoring at varying frequencies 
based on production levels and number of leaks detected.
---------------------------------------------------------------------------

    \100\ The docket for this rulemaking (Docket ID No. EPA-R08-OAR-
2015-0709) contains an approval for coverage under the GAO for a 
Crude Oil and Natural Gas Well Site and/or Tank Battery (DAQE-
MN149250001-14).
---------------------------------------------------------------------------

    The final FIP applicability threshold is consistent in part with 
the UDEQ's LDAR applicability threshold, though the final FIP also 
requires any additional sources where daily production exceeds 15 boe 
per day to conduct an LDAR inspection program, which is consistent in 
part with NSPS OOOOa. The LDAR inspection frequency requirements of 
this U&O FIP are the same as the Utah Oil and Gas Rules and NSPS OOOOa. 
For oil and natural gas sources that may have obtained coverage under 
the UDEQ's approval orders or the GAO, we concluded that the UDEQ's 
LDAR inspection frequency requirement is different than the LDAR 
inspection frequency requirements for oil and natural gas sources under 
this U&O FIP, which may require monitoring frequencies for only certain 
sources that are equivalent to this U&O FIP.
    We are finalizing a provision allowing for the use of alternative 
methods of leak detection, other than EPA Reference Method 21 or 
optical gas imaging instrument, to demonstrate compliance with the 
fugitive emissions monitoring requirements, provided the method is 
approved by the EPA. We are finalizing language specifying that to be 
approved by the EPA, a demonstration that the alternative method 
achieves emissions reductions that equal or exceed those that would 
result from the application of either Method 21 or optical gas imaging 
instruments must be made and any proposed approval by the EPA will be 
subject to public notice and comment.
5. VOC Emissions Control Requirements for All Sources
    Sections 49.4179 (VOC emission control requirements for tank truck 
loading), 49.4180 (VOC emission control requirements for pneumatic 
controllers) and 49.4181 (Other combustion devices) contain 
requirements for all existing, new, and modified existing oil and 
natural gas sources, regardless of source-wide or emission-unit-
specific emissions. Like the requirements in Utah's Oil and Gas Rules 
for oil and natural gas sources in areas of the Basin where the EPA has 
approved the UDEQ to implement the CAA, the U&O FIP's requirements are 
as follows: (1) tank trucks used for transporting crude oil, 
condensate, intermediate hydrocarbon liquids or produced water must be 
loaded using bottom filling or submerged fill pipes; (2) all existing 
pneumatic controllers must meet the pneumatic controller standards in 
NSPS OOOO at 40 CFR 60.5390(b)(2) and (c)(2) and NSPS OOOOa at 40 CFR 
60.5390a(b)(2) and (c)(2); and (3) all existing enclosed combustors, 
flares present and operating at sources on a voluntary basis--that is, 
those that are not required to control storage vessel, glycol 
dehydrator, and pneumatic pump emissions (per 40 CFR 49.4173 through 
49.4175)--must be equipped with an electronically controlled automatic 
ignition device.
    Our requirements for truck loading/unloading diverge in one respect 
from what the UDEQ is requiring in the Utah Oil and Gas Rule. The UDEQ 
requires that VOC emissions from tank truck loading and unloading at 
sources required to control storage vessel emissions be captured using 
a vapor capture line and routed to the onsite combustor or a separate 
combustor for VOC control. We are not finalizing an equivalent 
requirement at this time, as we did not receive sufficient cost and 
emissions reduction information during the public comment period for 
this rulemaking to sufficiently evaluate the cost effectiveness of such 
a requirement for the limited estimated emissions for truck loading/
unloading on Indian country lands within the U&O Reservation, based on 
the UBEI2017-

[[Page 75356]]

Update.\101\ The inventory identifies 595 tpy VOC from truck loading/
unloading. Assuming that the annualized cost to install a vapor capture 
line to an existing combustor is similar to that of routing pneumatic 
pump emissions to a combustor (approximately $1,627 per source) and 
assuming that there are approximately 2,165 sources that would be 
required to add a combustor, such a requirement to install an 
additional truck vapor capture line would result in high annualized 
costs relative to the VOC emissions reductions that would be achieved 
(over $6,000 per ton of VOC reduced per year).
---------------------------------------------------------------------------

    \101\ The Oil and Natural Gas Sector Climate Review Proposed 
Rule is soliciting comment and information that would help us better 
understand the cost, feasibility, and emission reduction benefits 
associated with controlling truck loading/unloading emissions. As 
with LDAR applicability, we may revisit this rulemaking in the 
future based on any final action we take under CAA section 111 with 
the Oil and Natural Gas Sector Climate Review rulemaking.
---------------------------------------------------------------------------

    Concerning pneumatic controllers, the U&O FIP adopts by reference 
the definitions of natural gas-driven pneumatic controller in NSPS OOOO 
and OOOOa (40 CFR 60.5430 and 60.5430a, which are identical) and 
requires owners/operators of affected pneumatic controllers (those 
controllers not subject to and controlled in accordance with the 
requirements for pneumatic controllers in NSPS OOOO or OOOOa) to meet 
the standards established for pneumatic controllers in NSPS OOOO. We 
are finalizing the requirement that owners/operators of affected 
controllers meet the tagging requirements in 40 CFR 60.5390(b)(2), 
60.5390(c)(2), except that the month and year of installation, 
reconstruction, or modification is not required. This exception is 
consistent with the Utah Oil and Gas Rules.
    Lastly, for existing enclosed combustors, flares present and 
operating at sources that would not be required to comply with the 
substantive VOC emissions control requirements of sections 40 CFR 
49.4173 through 49.4177, we are finalizing a requirement that those 
voluntarily operated control devices be equipped with an electronically 
controlled automatic ignition device. This approach is the same as the 
requirements of the Utah Oil and Gas Rules, which require automatic 
igniters on all existing combustion devices. In contrast to the 40 CFR 
49.4177 (VOC Emission Control Devices) requirements for devices used to 
comply with this FIP's substantive VOC emissions control requirements, 
we determined that it would be unreasonable to require voluntarily 
operated devices to have a system to monitor proper operation of 
devices used to ensure the presence of a flame at all times a gas 
stream is routed to the device, and that such a requirement would 
result in requirements for such sources on Indian country lands within 
the U&O Reservation that are not comparable to requirements for such 
sources in areas where the EPA has approved the UDEQ to implement the 
CAA.

G. Monitoring and Testing Requirements

    For existing, new, and modified sources, in 40 CFR 49.4182 
(Monitoring and testing requirements) we are requiring each owner or 
operator to conduct source monitoring necessary for the practical 
enforceability of the U&O FIP's VOC emission reduction requirements, 
including: (1) monthly inspections of each cover and closed-vent 
system, including storage vessel openings, thief hatches, pressure 
relief valves, and bypass devices, to ensure proper condition and 
functioning and for defects that can result in air emissions consistent 
with the procedures in 40 CFR 60.5416a(c) [NSPS OOOOa], correcting or 
repairing any defects identified within 30 days of identification; and 
(2) monthly inspections of each VOC emissions control device to ensure 
proper functioning and demonstrate compliance with the VOC emissions 
control device requirements by (a) checking the control device and 
parameter monitoring system for proper operation, including system 
integrity and leak-free operation, at least once per calendar month; 
(b) responding to any indication of pilot flame failure and ensuring 
the pilot flame is relit as soon as practicably and safely possible 
after discovery; and (c) monitoring visible emissions consistent with 
the requirements in 40 CFR 60.5412(d), using EPA Method 22 visual 
emissions testing to demonstrate there are no visible smoke emissions.
    These monitoring requirements are comparable on balance to those in 
the Utah Permit Requirements and Utah Oil and Gas Rules, with some 
exceptions made to ensure legally and practicably enforceable control 
of VOC emissions. For example, the Utah Permit Requirements and Utah 
Oil and Gas Rules require installation and operation of an automatic 
ignition device and operations with no visible emissions for all VOC 
control devices, but there are no corresponding monitoring requirements 
to demonstrate compliance with those requirements. We expect that this 
FIP's monitoring requirements for ensuring there is a constant ignition 
source when gas is flowing to the control device and for visible 
emissions testing will provide legal and practical enforceability.

H. Recordkeeping Requirements

    For existing, new, and modified sources, in 40 CFR 49.4183 
(Recordkeeping Requirements) we are requiring that each owner or 
operator of an affected oil and natural gas source keep specific 
records to be made available upon request, in lieu of voluminous 
reporting requirements. The records that must be kept include required 
inspections, measurements, monitoring results, emissions calculations, 
and deviations or exceedances of rule requirements and corrective 
actions taken, as well as any manufacturer specifications and 
guarantees or engineering analyses. These recordkeeping requirements 
provide legal and practical enforceability for the control and emission 
reduction requirements of this rule.

I. Notification and Reporting Requirements

    For existing, new, and modified sources, we are finalizing in 40 
CFR 49.4184 (Notification and reporting requirements) to require that 
each owner or operator of an affected oil and natural gas source 
prepare and submit an annual compliance report, with the initial report 
due April 1st of the calendar year following the effective date of the 
final rule and must cover all affected operations for the previous 
calendar year on and after the effective date of the final rule. 
Subsequent annual reports are due on the same date each year as the 
date the initial annual report was submitted and must cover all 
affected operations for the previous calendar year. The report must 
include a summary of deviations or exceedances of any requirements of 
the final FIP and the corrective measures taken for a specific subset 
of targeted required records for each enclosed combustor or flare, each 
cover and closed-vent system, fugitive emissions monitoring inspection, 
and each high-bleed controller, as identified in the rule. Annual 
reports may coincide with Title V, NSPS OOOO or OOOOa or NESHAP HH 
reports as long as all the required elements of the annual report are 
included. Additionally, a report of results must be submitted for any 
performance test we require. These reporting requirements provide legal 
and practical enforceability for the control and emission reduction 
requirements of this rule.

[[Page 75357]]

V. Significant Changes Since Proposal

    This U&O FIP, which is intended to address winter air quality 
impacts from ozone pollution, contains a common set of VOC emissions 
control requirements for certain existing, new, and modified oil and 
natural gas sources on the Indian country lands within the U&O 
Reservation. We consulted existing federal CAA oil and natural gas 
source category standards in developing the VOC emissions control 
requirements of this U&O FIP. To make VOC emissions control 
requirements across the Basin consistent, this U&O FIP goes beyond the 
federal standards in some cases, regulating equipment and activities 
that are not covered by those standards but that are regulated by the 
UDEQ. Such equipment and activities include small, remote glycol 
dehydrators; low throughput storage vessels; tank truck loading and 
unloading; and certain voluntarily operated control devices. 
Applicability of the requirements, including for equipment and 
activities that are regulated by the federal standards, is also 
consistent with the applicability for equivalent equipment and 
activities regulated by the UDEQ.
    As previously mentioned, the streamlined construction authorization 
mechanism in the National O&NG FIP applies on the Indian country 
portions of the U&O Reservation that are part of the Uinta Basin Ozone 
Nonattainment Area, as a result of our recent separate action amending 
the National O&NG FIP. Such true minor sources are required to register 
and comply with the eight federal standards in the National O&NG FIP, 
as applicable, to meet the preconstruction permitting requirements of 
the Federal Indian Country Minor NSR Program. Compliance with the eight 
federal standards in the National O&NG FIP, as applicable, does not 
relieve the owners/operators from the other applicable VOC control 
requirements of this U&O FIP, except that this U&O FIP exempts certain 
equipment and activities from it that are in compliance with the 
applicable requirements of the National O&NG FIP.
    We have made some changes to the requirements in the U&O FIP after 
considering public comments and evaluating more recent emissions 
inventories and air quality information. More details on our evaluation 
of available information and reasons for these decisions are described 
in our summary of responses to comments in Section VI of this preamble, 
and in the RIA and Response to Public Comments documents for this final 
rule.\102\
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    \102\ These documents can be found in the docket for this 
rulemaking (Docket ID EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

A. Final Rule Effective Date and Compliance Deadline

    In the proposed U&O FIP, we stated that we might issue a final 
action based on the proposal as soon as the date of publication of a 
final U&O FIP. We believed that there would be ``good cause,'' within 
the meaning of 5 U.S.C. 553(d)(3), to make the final rule effective as 
soon as published, if that proved necessary to ensure that this rule 
began to provide emission reductions before the next winter ozone 
season. As discussed above in Section II.D., winter ozone in the Uinta 
Basin is a serious public health problem, which this final rule is 
intended to help address. In addition, the reductions provided by this 
rule are an integral part of the Agency's strategy to address the air 
quality problem on the Indian country lands within the U&O Reservation 
while maintaining a permitting mechanism that allows appropriate 
continued oil and natural gas production. The primary other component 
of that strategy is a separate action to amend the National O&NG FIP to 
extend its geographic coverage to the Indian country portions of the 
U&O Reservation that are part of the Uinta Basin Ozone Nonattainment 
Area. Over the long term, we are relying on the VOC emissions 
reductions achieved through this action to ensure that the previous 
extension of the scope of the National O&NG FIP does not jeopardize air 
quality.
    After careful consideration of the comments received, and of the 
requirements under the Congressional Review Act (CRA) specifying that a 
major rule may become effective no earlier than 60 days after it is 
published in the Federal Register,\103\ the EPA is finalizing an 
effective date 60 days after the final rule is published in the Federal 
Register.
---------------------------------------------------------------------------

    \103\ Id. at 5 U.S.C. 801(a)(3)(A). This rule is considered an 
economically significant rule under Executive Order 12866, as a rule 
that imposes costs or generates benefits of at least $100 million 
per year, which is the same economic threshold applied in defining 
what constitutes a ``major rule'' under the CRA (one that ``is or is 
likely to result in . . . an annual effect on the economy of 
$100,000,000 or more.'').
---------------------------------------------------------------------------

    We proposed to require compliance by oil and natural gas sources 
existing as of the effective date of the final rule no later than 18 
months after the effective date of the final rule. We have revised that 
compliance period to a 12-month compliance deadline. The proposed 18-
month compliance period was informed by what we had learned about the 
time needed for sources in areas of the Basin where the EPA has 
approved the UDEQ to implement the CAA to comply with Utah's 
requirements for oil and natural gas sources. We had been informed by 
UDEQ compliance staff that the majority of existing oil and natural gas 
sources in areas of the Basin where the EPA has approved the UDEQ to 
implement the CAA that had been required to install VOC emission 
control retrofits in had completed the required retrofits within 9 
months of the effective dates of their minor source approval orders, 
ahead of the 18-month deadline in UDEQ approval orders for operators to 
notify the UDEQ of the status of retrofit construction.\104\ The UDEQ 
estimated that approximately 1,600 existing sources had been required 
to install retrofits to control emissions from the collection of all 
storage vessels, glycol dehydrators, and/or pneumatic pumps on non-
Indian country lands in the Uinta Basin. For the proposal, on the other 
hand, we estimated that there were approximately 2,100 sources on 
Indian country lands within the U&O Reservation that would be subject 
to such requirements in this U&O FIP. We considered it likely in light 
of this larger number of sources, and the presumably finite 
availability of equipment and personnel, that owners and operators 
would need longer than 9 months to complete the necessary retrofits to 
the greater number of Indian country sources. Therefore, we proposed an 
18-month compliance deadline for the U&O FIP as reasonable to 
accommodate the challenges of procurement of equipment and labor to 
complete the retrofits of a larger number of sources. Using the 
UBEI2017-Update, we now estimate that 2,165 existing sources on the 
Indian country lands within the U&O Reservation will be required to 
install retrofits to control emissions from the

[[Page 75358]]

collection of all storage vessels, glycol dehydrators, and pneumatic 
pumps under this U&O FIP, which is only slightly more than the number 
of existing affected sources estimated for the proposed FIP using the 
UBEI2014.
---------------------------------------------------------------------------

    \104\ Email correspondence with UDEQ staff regarding their 
source inventory and experiences regulating existing oil and natural 
gas sources in areas of the Basin where the EPA has approved the 
UDEQ to implement the CAA is included in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709). UDEQ compliance 
staff target each new approval order for inspection within 18 months 
of the date it is issued. They document the status of construction 
at the time of inspection and note whether the permitted source has 
provided a notification of construction status, which is required 
within 18 months of the date the approval order is issued. UDEQ 
compliance staff have inspected hundreds of such existing oil and 
natural gas sources without observing any compliance issues with the 
18-month notification requirement. While UDEQ compliance staff do 
not compile this information into any readily available summary 
format, details about the status of construction are included in the 
inspection report for each source.
---------------------------------------------------------------------------

    Although the number of estimated affected sources is still higher 
than the number in areas where the EPA has approved the UDEQ to 
implement the CAA, after considering public comments received on the 
proposed 18-month compliance deadline and the demonstrated need for 
more near-term air quality benefits to improve air quality in and 
around the U&O Reservation, we have revised the proposed 18-month 
compliance period to a 12-month compliance period from the effective 
date of the rule. In the EPA's judgment, this shorter compliance 
schedule (especially when combined with the 60-day effective date) will 
sufficiently accommodate the potentially limited availability of 
equipment and personnel, and thus still reasonably allow industry to 
comply with the new requirements in a timely manner, while also 
ensuring that meaningful reductions will be achieved that will help 
make progress toward future attainment. Further, potentially affected 
owners and operators have been on notice of the possibility that these 
rules might come into effect since the proposed FIP was published in 
January 2020.
    We also enhanced the final FIP to specify the process the EPA would 
take to decide requests for extension of the compliance period, in 
particular adding the requirement that the request be submitted before 
the compliance deadline, identify the specific provisions for which an 
extension is being requested and include an alternative compliance 
deadline, and provide a rationale for the request with supporting 
information explaining how the operator will effectively meet all 
applicable requirements after the requested alternative compliance 
deadline.

B. Triennial Emissions Inventory

    In the proposed FIP we contemplated establishing the due date for 
the submittal of annual emissions covering the first triennial 
inventory year 2020 as October 1, 2021, to allow operators time to set 
up an appropriate emissions tracking and reporting system. However, 
given the time that has elapsed since the proposal, we are revising the 
proposal to require the first triennial emissions inventory to cover 
calendar year 2023, with the first inventory due on April 15, 2024, and 
thereafter, every three years, the inventory will be due on April 15th 
of the year following the inventory year. This is in line with the 
UDEQ's triennial emissions inventory collection, and the schedule for 
the NEI. This revised schedule will also allow additional time for 
operators to set up an appropriate emissions tracking and reporting 
system, according to the instructions we will make available on our 
website for the rule once it is finalized.

C. Streamlined Construction Authorization

    In the proposed FIP we contemplated moving the authority for 
streamlined construction authorization mechanism of true minor oil and 
natural gas sources on the Indian country portions of the U&O 
Reservation that are part of the Uinta Basin Ozone Nonattainment Area 
in the National O&NG FIP (through 40 CFR part 49, subpart K) to this 
FIP, so as to consolidate air quality requirements for oil and natural 
gas sources in the Indian country portions of the U&O Reservation that 
are part of the Uinta Basin Ozone Nonattainment Area within one part of 
the Code of Federal Regulations, which we believed could provide a more 
efficient and user-friendly approach. However, we have decided not to 
finalize that approach in this FIP because, after further 
consideration, including consideration of public comments received, we 
believe that modifying the National O&NG FIP is unnecessary.

D. Applicability

    In the proposed FIP, we defined some terms, such as storage tank, 
pneumatic pump, pneumatic controller, and fugitive emissions component, 
in a way that were different from the definitions of equivalent 
equipment and activities in NSPS OOOO and OOOOa. The proposed FIP was 
designed in part for consistency with NSPS OOOO and OOOOa and the Oil 
and Gas CTG, and for consistency with the Utah Oil and Gas Rules (which 
were also designed for consistency with NSPS OOOO and OOOOa). After 
considering public comments received, and for ease of implementation 
and compliance, we have revised the proposed definitions, and are 
finalizing definitions that are consistent with those in NSPS OOOO and 
OOOOa.
    Another difference with NSPS OOOO and OOOOa and the Oil and Gas CTG 
that was identified in comments on the proposed FIP is in the method 
used to calculate VOC emissions from the collection of all storage 
vessels to determine applicability of the control requirements for 
storage vessels, glycol dehydrators and pneumatic pumps in 40 CFR 
49.4173 through 49.4177. We proposed that VOC emissions from the 
collection of all storage vessels should be calculated based on 
uncontrolled actual emissions. To provide consistency with NSPS OOOO 
and OOOOa and the Oil and Gas CTG, we are finalizing requirements that 
VOC emissions from the collection of all storage vessels be calculated 
based on potential emissions, which may account for enforceable control 
requirements already applicable to certain storage vessels. The Utah 
Oil and Gas Rules require all storage vessels located at a well site 
that are in operation as of January 1, 2018, with a site-wide 
throughput of 8,000 bbl or greater of crude oil or 2,000 bbl or greater 
of condensate per year on a rolling 12-month basis, to control 
emissions unless an exemption applies that total VOC emissions from the 
collection of all storage vessels are demonstrated to be less than 4 
tpy of uncontrolled actual emissions (defined as actual emissions or 
the potential to emit without considering controls) on a rolling 12-
month basis. Emissions to meet the exemption must be calculated using 
direct site-specific sampling data and any software program or 
calculation methodology in use by industry that is based on AP-42 
Chapter 7. A separate provision allows controls to be removed after a 
minimum of one year of operation if source-wide throughput is less than 
8,000 bbl crude oil or 2,000 bbl condensate on a rolling 12-month basis 
or uncontrolled actual VOC emissions are demonstrated to be less than 4 
tons per year. For sources that operate only storage vessels and not 
glycol dehydrators or pneumatic pumps, the proposed 8,000 bbl of crude 
oil/2,000 bbl of condensate throughput applicability threshold for 
control of storage vessel emissions was the same as the control 
applicability threshold for storage vessels in the UDEQ's recently 
adopted Utah Oil and Gas Rules. However, based on public comments 
received on the proposed rule, we decided not to finalize the 
production-based threshold for oil and natural gas sources with only 
storage vessels and no glycol dehydrators or pneumatic pumps. Several 
commenters expressed the view that, while they appreciated the effort 
to establish consistent requirements across all areas of the Basin, 
determining applicability for VOC combustion control requirements would 
be simpler and more straightforward if applicability was based solely 
on the annual facility-wide VOC emissions threshold for storage 
vessels, glycol dehydrators and pneumatic pumps of 4 tpy.

[[Page 75359]]

    We noted in the preamble to the proposed U&O FIP that in January 
2019, the Utah Air Quality Board approved an additional rule in the 
Utah Administrative Code Chapter R307-500 Series (Oil and Gas) at R307-
511 to manage associated gas from a completed oil well by either 
routing it to a process unit for combustion, routing it to a sales 
pipeline, or routing it to a VOC control device, except for emergency 
release situations. This rule was approved after we had drafted and 
evaluated the emissions reductions and costs of the provisions in the 
proposed U&O FIP. We noted our intent to evaluate and consider 
incorporating equivalent associated gas requirements in a final U&O 
FIP. After careful consideration of the comments received and 
evaluation of the data used to estimate associated gas emissions in the 
UBEI2017-Update used to analyze the costs and benefits of this final 
FIP, we have decided not to finalize requirements to control associated 
gas emissions in the U&O FIP, because we do not have adequate 
information specific to the Uinta Basin operations to accurately assess 
and develop cost-effective requirements.
    In the proposed U&O FIP, we based the applicability of the 
requirement to implement a semiannual fugitive emissions monitoring 
program on whether the oil and natural gas source was required to 
control facility-wide emissions from the collection of all storage 
vessels, glycol dehydrators, and pneumatic pumps. After considering 
public comments on the proposed FIP, we have revised the proposed 
fugitive emissions monitoring applicability, and in the final rule are 
requiring semiannual fugitive emissions monitoring for each owner or 
operator of an oil and natural gas source where either of the following 
is true: (1) As proposed, the collection of fugitive emissions 
components is located at an oil and natural gas source that is required 
to control VOC emissions according to 40 CFR 49.4173 through 49.4177 of 
this FIP (i.e., the source-wide potential for VOC emissions from the 
collection of all storage vessels, glycol dehydrators, and pneumatic 
pumps is equal to or greater than 4 tpy, as determined according to 40 
CFR 49.4173(a)(1)); or (2) As revised, the collection of fugitive 
emissions components is located at a well site, as defined in 40 CFR 
60.5430a, that at any time has total production greater than 15 boe per 
day based on a rolling 12-month average.
    The Uinta Basin generally encompasses an area of over 6,800 square 
miles with hundreds of miles of dirt roads connecting over 10,000 oil 
and natural gas wells. According to the Updated 2017 Uinta Basin 
Emissions Inventory (UBEI2017-Update),\105\ the average number of wells 
per well pad is 1.5. The inventory shows that fugitive emissions are 
the second highest VOC emissions source on Indian country lands within 
the U&O Reservation, at about 15,600 tpy. Studies have been conducted 
specific to the Uinta Basin that investigated the sources of VOC 
emissions from oil and natural gas production operations. Certain high 
emitting sources, or ``super-emitters,'' are likely due to abnormal 
process conditions.\106\ Examples of abnormal process conditions, which 
could be persistent or episodic, include: failures of storage vessel 
control systems; malfunctions upstream of the point of emissions (for 
example, stuck separator dump valve resulting in produced gas venting 
from storage vessels); design failures (for example, vortexing or gas 
entrainment during separator liquid dumps); and equipment or process 
issues (for example, over-pressured separators, malfunctioning or 
improperly operated dehydrators or compressors).\107\ A July 2017 study 
by Utah State University, TriCounty Health Department, and the UDEQ 
surveyed 400 oil and natural gas well pads using an IR camera for 
fugitive emissions detection at storage vessels and found that 
emissions plumes were detected at 37 percent of well pads where the 
storage vessels were controlled. A November 2018 Utah State University 
study employed a hybrid of both ground based and aerial IR detection 
methods. The study found that the majority of observed fugitive 
emissions plumes originated from storage vessels (over 75 percent) and 
that facilities where emissions were detected were primarily younger, 
high production facilities with more liquid storage vessels, and, in 
the case of the aerial observations only, that primarily produce oil. 
The study found that emissions that were more likely to be 
characterized as large were observed at well pads with controlled 
storage vessels. The emissions were observed upstream of the control 
device, from thief hatches, vents and piping on the tanks. The results 
of these two studies strongly suggest that a significant quantity of 
emissions from controlled storage vessels were not reaching the 
designated control device. Requiring owners and operators of oil and 
natural gas sources that are required to control storage vessel, 
dehydrator and pneumatic pump emissions to implement a LDAR program 
will help reduce fugitive emissions from well sites with controlled 
storage vessels. We acknowledge that the definition of fugitive 
emissions component in the final U&O FIP excludes valves, connectors, 
pressure relief devices, open-ended lines, flanges, covers, closed-vent 
systems, thief hatches, and other openings associated with storage 
vessels or closed-vent systems subject to the control requirements of 
40 CFR 49.4173 and 49.4176. Those activities are subject to specific 
integrity monitoring requirements in 40 CFR 49.4182, discussed later in 
this section, to ensure that 100 percent of the emissions are routed 
either to a process or an emissions control device. However, the LDAR 
requirements of final 40 CFR 49.4177 do apply to components associated 
with storage vessels and closed-vent systems that are not subject to 
the requirements of 40 CFR 49.4173 and 49.4176. We expect that the 
combination of the LDAR requirements of final 40 CFR 49.4177 and the 
integrity monitoring requirements of final 40 CFR 49.4182 will 
effectively reduce VOC emissions from equipment leaks at oil and gas 
sources with controlled storage vessels.
---------------------------------------------------------------------------

    \105\ UBEI2017-Update. The inventory and supporting analysis can 
be viewed in the docket for this rulemaking, Microsoft Excel 
spreadsheet titled, ``UO FIP cost and emissions analysis.xlsx'' 
(Docket ID No. EPA-R08-OAR-2015-0709).
    \106\ Zavala-Araiza, D., Alvarez, R. A., Lyon, D. R., Allen, D. 
T., Marchese, A. J., Zimmerle, D. J., & Hamburg, S. P.; ``Super-
emitters in Natural Gas Infrastructure are Caused by Abnormal 
Process Conditions,'' Nature Communications 8, 14012 (2017).
    ``Storage Tank Emissions Pilot Project (STEPP): Fugitive Organic 
Compound Emissions from Liquid Storage Tanks in the Uinta Basin,'' 
Final Report to The Utah State Legislature (USU, TriCounty Health 
Dept, UDEQ, July 17, 2017) available in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
    ``Hydrocarbon Emission Detection Survey of Uinta Basin Oil and 
Gas Wells''. November 2018. Bingham Research Center, Utah State 
University, available in the docket for this rulemaking (Docket ID 
No. EPA-R08-OAR-2015-0709).
    \107\ The UBEI2017-Update has not accounted for the phenomenon 
of ``super-emitters.''
---------------------------------------------------------------------------

    We determined that to maximize VOC emissions reductions and the 
resulting expected improvements in air quality on the U&O Reservation 
and surrounding areas, finalizing a balance between the LDAR 
applicability thresholds of the Utah Oil and Gas Rules and the CTG is 
appropriate, as it will result in emissions reductions at more existing 
sources than if we finalized the proposed applicability threshold. It 
will not impose the requirement to implement an LDAR program at every 
oil and natural gas source on the Indian country lands within the U&O 
Reservation, which could potentially create a competitive disadvantage 
to operating on the Reservation, resulting

[[Page 75360]]

in potentially negative economic impacts for the Ute Indian Tribe and 
other mineral owners. We acknowledge that NSPS OOOOa currently contains 
two different LDAR inspection standards for well sites and gathering 
and boosting compressor stations controlling methane emissions and 
those controlling VOC emissions and that the EPA has published a 
proposed national rule to reduce methane and other pollutants from 
existing, new, and modified sources in the oil and natural gas industry 
that seeks to align those standards to require semiannual LDAR 
inspections for all well sites (e.g., remove the exemption for low-
production wells) and quarterly LDAR inspections for all compressor 
stations.\108\ We also acknowledge that the rule proposes to establish 
new methane and VOC fugitive emissions monitoring standards for new and 
modified sources and similar methane fugitive emissions monitoring 
guidelines for existing sources.
---------------------------------------------------------------------------

    \108\ See 85 FR 63110. Nov. 15, 2021. Proposed Rule. Standards 
of Performance for New, Reconstructed, and Modified Sources and 
Emissions Guidelines for Existing Sources: Oil and Natural Gas 
Sector Climate Review, available at https://www.regulations.gov 
(Document ID #EPA-HQ-OAR-2021-0317-0001), accessed Mar. 14, 2022. 
The regulatory inconsistencies stem from the recent joint resolution 
under the Congressional Review Act that disapproved the 2020 Policy 
Rule. That rule, which was issued by the previous Administration, 
had eliminated important requirements to reduce methane and other 
air pollution from new and modified sources in the oil and natural 
gas source category. However, the joint resolution did not address a 
separate 2020 rule known as the ``Technical Rule,'' which remains in 
place today. The EPA is proposing to repeal amendments in the 
Technical Rule that exempted low-production well sites from 
monitoring fugitive emission; and changed VOC monitoring 
requirements at gathering and boosting compressor stations from 
quarterly to semi-annually.
---------------------------------------------------------------------------

    We expect that the final LDAR requirements of this FIP will result 
in meaningful reductions in VOC emissions and ground-level ozone 
production, significantly furthering our main objective for this U&O 
FIP of improving air quality. We determined that, particularly for 
existing sources, in order to meet our goal to provide consistent 
requirements across the Uinta Basin, the LDAR inspection frequency 
requirements in this U&O FIP should provide a measure of consistency 
with the LDAR inspection frequency requirements in the Utah Oil and Gas 
Rules, as those rules apply prospectively to all oil and natural gas 
well sites on non-reservation Indian country lands in the Uinta Basin 
that are not already subject to site-specific approval orders or the 
GAO. If the sources in the Uinta Basin that are in areas where the EPA 
has approved the UDEQ to implement the CAA are also subject to the LDAR 
requirements of the NSPS OOOOa, the NSPS requirements supersede the 
UDEQ requirements if the UDEQ requirements are less stringent. 
Similarly, if the sources in the Uinta Basin that are regulated by the 
EPA on Indian country lands within the U&O Reservation are subject to 
the LDAR requirements of NSPS OOOOa, those sources are exempt from 
complying with the LDAR requirements in this U&O FIP. We may revisit 
this final action in the future based on any final action we take under 
CAA section 111 with the Oil and Natural Gas Sector Climate Review 
rulemaking to address application of LDAR at sources covered by this 
FIP in a manner similar to the final national rule's provisions for 
sources that it covers. Also, if the Uinta Basin Ozone Nonattainment 
Area's Marginal classification is reclassified (``bumped up'') to a 
Moderate nonattainment classification, or if air quality concerns 
otherwise warrant, we may conclude that further rulemaking is necessary 
or appropriate.
    We proposed general language in the fugitive emissions provisions 
allowing for the use of methods of leak detection other than EPA 
Reference Method 21 or optical gas imaging instrument to demonstrate 
compliance with the fugitive emissions monitoring requirements, 
provided the method is approved by the EPA. We solicited information in 
the proposed U&O FIP on alternative methods of leak detection (e.g., 
aerial) that could potentially achieve meaningful and more cost-
effective reductions in fugitive VOC emissions that contribute to ozone 
formation, and whether any of these advanced monitoring technologies 
would be effective in the Uinta Basin and should be approvable as an 
alternative leak detection compliance method under a final U&O FIP. We 
also solicited input on the criteria that the EPA should consider in 
approving alternative leak detection compliance methods, including 
appropriate accuracy and quality assurance standards that alternative 
methods would need to meet to demonstrate equivalency to onsite optical 
gas imaging instruments or onsite EPA Reference Method 21. We noted 
that specific descriptions of the approach, frequency of monitoring, 
detection thresholds, limiting factors in detection, costs and 
availability for alternative leak detection methods would be helpful. 
We did not receive any new information on the costs and effectiveness 
of alternative leak detection methods during the public comment period. 
However, we did receive suggestions for criteria we should consider in 
approving alternative leak detection compliance methods to demonstrate 
equivalency to EPA Reference Method 21 or optical gas imaging. Based on 
those comments, we have added language to the final FIP specifying that 
to be approved by the EPA, a demonstration that the alternative method 
achieves emissions reductions that equal or exceed those that would 
result from the application of either Method 21 or optical gas imaging 
instruments must be made and any proposed approval by the EPA will be 
subject to public notice and comment.
    Studies specific to the Uinta Basin have investigated the viability 
of leak detection method alternatives to conventional onsite instrument 
detection, including detection methods from an aerial platform. One 
study \109\ employed a helicopter-based infrared camera at an elevation 
of approximately 50 meters above ground level to survey more than 8,000 
oil and natural gas well pads in seven United States basins. The goal 
of this aerial survey was to assess the prevalence and distribution of 
hydrocarbon sources whose fugitive emissions were high enough to be 
labeled high-emitters. At each site with detected emissions, the survey 
team reported the site's location and the number and equipment type of 
each observed emission source. Survey results indicated that high-
emitting sites constituted four percent of all the sites surveyed 
across the seven basins examined. In the Uinta Basin, 1,389 well pad 
facilities were flown over, and high emissions were observed at 6.6 
percent of those well pads. Another previously discussed study \110\ 
that employed a hybrid of both ground-based and aerial IR detection 
methods found that observations using an IR camera from a helicopter in 
winter were hampered by the cold land temperatures of the background 
against which the plumes would be observed. The ground-based part of 
this study, as previously discussed, showed a fairly high prevalence of 
observed emissions from controlled storage vessels.
---------------------------------------------------------------------------

    \109\ ``Aerial Surveys of Elevated Hydrocarbon Emissions from 
Oil and Gas Production Sites,'' Environmental Science and 
Technology, 2016, 50 (9), pp 4877-4886, publication date Apr. 5, 
2016, available at http://pubs.acs.org/doi/abs/10.1021/acs.est.6b00705, accessed Mar. 14, 2022.
    \110\ ``Hydrocarbon Emission Detection Survey of Uinta Basin Oil 
and Gas Wells''. Nov. 2018. Bingham Research Center, Utah State 
University, available at available in the docket for this rulemaking 
(Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

    We are finalizing the proposed provisions allowing operators to use

[[Page 75361]]

alternative methods of leak detection, other than EPA Reference Method 
21 or optical gas imaging instruments, to demonstrate compliance with 
the fugitive emissions monitoring requirements, provided the method is 
approved by the EPA. We added language specifying that to be approved 
by the EPA, a demonstration that the alternative method achieves 
emissions reductions that equal or exceed those that would result from 
the application of either Method 21 or optical gas imaging instruments 
must be made and any proposed approval by the EPA will be subject to 
public notice and comment. The total fugitive VOC emissions reduced 
does not account for emissions due to abnormal process operations, 
which was discussed earlier. Recognizing that technology used to 
detect, measure, and mitigate emissions is rapidly developing, on July 
18, 2016, the EPA issued a request for information, (RFI) \111\ 
inviting all parties to provide information on innovative technologies 
to accurately detect, measure, and mitigate emissions from the oil and 
natural gas industry. The intent of this notice was to solicit data 
supporting alternative approaches to limit emissions from this 
industry.
---------------------------------------------------------------------------

    \111\ See 81 FR 46670 (July 18, 2016).
---------------------------------------------------------------------------

E. Monitoring and Testing

    In response to several comments, and to clarify one provision, we 
made some changes to the proposed monitoring requirements for covers 
and closed vent systems and VOC emissions control devices to provide 
more consistency with NSPS OOOO and OOOOa. The proposed requirements 
for inspecting covers and closed vent systems were different than NSPS 
OOOOa in that they did not allow the option to demonstrate compliance 
by conducting optical gas imaging inspections on the same schedule as 
fugitive emissions inspections. We have added that option to the final 
FIP. Additionally, rather than adopt by reference the inspection 
requirements of NSPS OOOOa at 40 CFR 60.5416a(c), we incorporated 
streamlined inspection requirements for covers and closed vent systems 
into a common set of provisions, because the separate provisions in 
NSPS OOOOa are essentially the same. Although the preamble to the 
proposed rule explained that it would require that facilities ``ensure 
that each enclosed combustor or utility flare is. . . operated with no 
visible smoke emissions,'' in the proposed regulatory text we 
inadvertently mentioned only enclosed combustors, not flares, in the 
provision requiring owners and operators to verify on a monthly basis 
that there are no detectable smoke emissions. To make the regulatory 
text of the FIP consistent with the intent explained in the proposed 
rule as to flares, and also in response to comments that the FIP should 
provide more consistency with NSPS OOOO and OOOOa, the monitoring 
requirements being finalized today, consistent with NSPS OOOO and 
OOOOa, require Method 22 monitoring for all VOC control devices. We 
also streamlined the requirements to perform monthly inspections of the 
covers closed-vent systems and monthly inspections of the VOC emissions 
control devices, each separated by at least 15 days between each 
inspection, to provide operators the flexibility to schedule 
inspections in the same visit.

F. Recordkeeping and Reporting

    In response to several comments, we also made some changes to the 
proposed recordkeeping requirements to provide more consistency with 
the records that the UDEQ requires of oil and natural gas sources, as 
well as with the records required by NSPS OOOO and OOOOa. Regarding 
annual reports, we made changes to clarify in the final FIP the April 
1st due date of each annual report, and that the reporting period for 
the initial annual report will be the period beginning with the 
effective date of the final rule through the end of that calendar year. 
Additionally, in response to public comments that annual reporting 
should be limited to targeted records that most efficiently indicate 
the degree of compliance with the U&O FIP, we have specified a subset 
of required records that must be summarized in the annual report 
related to each enclosed combustor or flare, each cover and closed-vent 
system, fugitive emissions monitoring and each high-bleed pneumatic 
controller, including deviations from rule requirements and corrective 
actions taken to address deviations.

VI. Summary of Significant Comments and Responses

    This section summarizes the significant public comments on the 
proposed FIP and our response to those comments as they related to the 
specific requirements being finalized today in this U&O FIP. More 
detailed summaries of the comments and our responses are available in 
the docket for this rulemaking.\112\
---------------------------------------------------------------------------

    \112\ Response to Public Comments. Proposed Federal 
Implementation Plan: Managing Emissions from Oil and Natural Gas 
Sources on Indian Country Lands within the Uintah and Ouray Indian 
Reservation in Utah. May 2021, available in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

A. Major Comments Concerning Effective Date and Compliance Deadline

    Comment: Industry commenters asserted that since the EPA has 
determined that the rule is an economically significant regulatory 
action subject to Office of Management and Budget Review under E.O. 
12866, the rule must also be a ``major rule'' under the Congressional 
Review Act, which mandates that it may become effective no earlier than 
60 days after it is published in the Federal Register.
    Response: We agree and have finalized an effective date 60 days 
after publication in the Federal Register.
    Comment: Industry commenters claimed that air quality studies in 
the Uinta Basin and available air quality data support that emissions 
reductions needed to attain the NAAQS only need to occur in the winter, 
rather than year-round as the EPA proposed, and claimed it was 
unreasonable and arbitrary that the EPA did not evaluate a seasonal 
regulatory option.
    Response: We disagree that it was unreasonable or arbitrary not to 
evaluate a seasonal regulatory option to address elevated ozone and 
emissions reductions with this rulemaking. Through the stakeholder 
outreach we participated in during the rulemaking process, we heard 
feedback from the Ute Indian Tribe, the UDEQ, and oil and natural gas 
operators alike that consistent regulatory requirements across all 
areas in the Basin are important to ensuring a cohesive strategy to 
improve air quality, providing regulatory certainty and avoiding 
disadvantages to development in one area versus another. Based on 
verified ozone measurements during summer months at regulatory monitors 
in the Basin from 2017 to 2020, there have been at least a few 
exceedances of the 8-hour ozone daily maximum, and many other readings 
that have been close to the NAAQS. Imposing a seasonal control program 
for this rulemaking when the UDEQ requires year-round controls and the 
majority of the existing VOC emissions in the Basin are occurring on 
the Indian country lands within the U&O Reservation was not considered 
for several reasons. Doing so would continue inconsistent regulatory 
requirements across all areas in the Basin, potentially creating 
incentives to develop sources with higher emissions on the Reservation. 
Seasonal emissions reductions requirements would be complex to 
implement, enforce and quantify the effects to defensibly justify 
continued

[[Page 75362]]

minor source development on the Reservation. The opportunity to achieve 
VOC emissions reductions that could improve ozone air quality close to 
the NAAQS during summer months would be lost. We may consider seasonal 
emissions mitigation measures in a future rulemaking if additional CAA 
nonattainment requirements are triggered.
    Comment: Environmental organization commenters asserted that the 
EPA must ensure existing sources are in compliance immediately upon the 
effective date of the final rule, rather than allowing an 18-month 
period for affected sources to come into compliance. The commenters 
claimed that the EPA failed to provide adequate justification for why 
vendors need 18 months to provide equipment to owners and operators 
when the estimated number of affected existing sources needing to 
install retrofits is similar to the number that were cited as able to 
install retrofits in in areas of the Basin where the EPA has approved 
the UDEQ to implement the CAA. Commenters also asserted that the EPA 
should promulgate the FIP with a specific process of how decisions will 
be made to grant requested extensions of the 18-month compliance 
period.
    Response: We acknowledge the commenters' requests urging the agency 
to finalize and fully implement the FIP in a shorter timeframe than was 
proposed. We disagree that existing sources should be required to have 
all required controls installed immediately upon the effective date of 
the final rule. The final FIP may require operators of an estimated 
2,165 existing sources on Indian country lands within the U&O 
Reservation to retrofit existing equipment and install combustion 
devices, at an estimated capital cost of about $230 million. We 
determined it would not be practical for affected operators to acquire 
the necessary equipment from vendors and have it installed at that many 
existing sources in two months. The evaluation of anecdotal information 
from the UDEQ on the time it took a similar number of existing sources 
to come into compliance was not comparable to the FIP, as the UDEQ's 
approvals were spread out over time and that information was only used 
as a data point to help inform our belief that a certain period of time 
is appropriate to allow existing sources to come into compliance. We 
agree, however, given the urgency of the need to improve air quality in 
the Basin and the fact that owners and operators have been on notice 
that the rule might come into effect since the proposed rule was 
published in January 2020, the compliance period can reasonably be 
shortened to ensure meaningful VOC emissions reductions will be 
achieved in a timely manner. Therefore, we are finalizing a 12-month 
period for existing sources to come into compliance with the FIP. We 
have retained flexibility for operators to request extensions to the 
compliance deadline but agree with commenters that the regulatory 
language should specify the process the EPA would take to make 
decisions granting requested extensions of the compliance period and 
have included such language in the final rule.

B. Major Comments Concerning Regulatory Authority for Minor Source 
Streamlined Construction Authorization

    Comment: Industry commenters asserted that, given the amendment of 
the National O&NG FIP to permanently extend the streamlined approach 
for approval of new and modified true minor oil and natural gas sources 
to the portions of the Indian country lands within the U&O Reservation 
that are part of the 2015 Uinta Basin Ozone Nonattainment Area was 
already permanently finalized at its current location in the Code of 
Federal Regulations (CFR), it is not necessary to remove the regulatory 
authority from that FIP and add it to the final U&O FIP. The same 
commenters also asserted that it is not appropriate to take comment on 
the National O&NG FIP amendment as part of this rulemaking. 
Environmental organization commenters asserted, on the other hand, that 
the EPA must analyze the air quality impacts of the National O&NG FIP 
amendment, claiming that the EPA failed to do so as part of that 
action. The commenters noted that the EPA has a mandate under the CAA's 
minor NSR provisions to ensure that implementation of the program 
assures that the NAAQS are achieved and, therefore, cannot authorize 
construction of new and modified sources in a nonattainment area unless 
it demonstrates protection of the NAAQS through a modeling analysis and 
a mechanism that tracks emissions consumed by new and modified sources 
against emissions that are reduced.
    Response: We agree with commenters that it is not necessary to move 
the location of the authority for the already-effective amendments to 
the National O&NG FIP to the final U&O FIP. We disagree that the 
proposed U&O FIP provided a fresh opportunity to comment on the merits 
of the National O&NG FIP amendment and that the proposed U&O FIP should 
have analyzed the air quality impacts of extending the National O&NG 
FIP to the Indian country portions of the nonattainment area. That 
action was promulgated through a separate rulemaking process \113\ and 
was not challenged within the judicial review period of that regulatory 
action and is thus today fully effective. At most, the proposal to 
include this authority in the U&O FIP would have shifted the location 
of already-existing authority within the CFR, which might have promoted 
easier compliance for affected oil and natural gas sources but would 
not have established any new requirements. In any event, we have 
decided not to finalize the proposed shift in the location of the 
authority to the U&O FIP, as we determined that the agency resources 
required to revise the National O&NG FIP through the rulemaking process 
would outweigh any streamlining advantage gained; thus, the authority 
will remain in the National O&NG FIP, as established in the May 24, 
2019, final rule.
---------------------------------------------------------------------------

    \113\ See 84 FR 21240 (May 14, 2019).
---------------------------------------------------------------------------

    Further, we disagree with the assertion that only modeling can 
support a conclusion that substantial emissions reductions from this 
FIP could be relied on to support authorization to construct new and 
modified minor oil and natural gas sources under the National O&NG FIP. 
Unlike the NSR program for major sources in nonattainment areas, the 
minor NSR program does not require emissions offsets from existing 
sources in authorizing construction of new or modified minor sources in 
nonattainment areas, but rather requires the reviewing authority to 
demonstrate that new or modified minor sources in a nonattainment area 
would not cause or contribute to a NAAQS violation. The reviewing 
authority is not required to conduct modeling of minor source emissions 
to make such a demonstration. Rather, the rule provides the reviewing 
authority discretion to require modeling if it is concerned that new 
construction may cause or contribute to NAAQS violations. That 
discretion in demonstrating NAAQS protection was at work in the action 
to amend the National O&NG FIP, where we relied on existing source 
emissions reductions that we expect will be achieved from 
implementation of a U&O FIP. Based on our analysis of the current pace 
of new development under the National O&NG FIP, we expect that these 
reductions will far exceed the expected emissions from new 
construction. Our estimate for the expected magnitude of future 
development was based on a

[[Page 75363]]

quantitative analysis of the rate of new and modified true minor source 
development and emissions increases on the Indian country lands within 
the Uintah & Ouray Reservation for each of the full calendar years 
since the effective date of the National O&NG FIP (2017-2019). We have 
updated that estimate for the final FIP to include 2020 and 2021 and we 
find that the pace of development has not noticeably changed, such that 
development of new and modified true minor oil and natural gas sources 
would need to occur at over 90 times the current pace of development to 
consume the annual headroom that full compliance with this FIP is 
expected to generate.\114\ With this reevaluation, we continue to 
support the conclusion that the reductions achieved by this FIP will 
create more than enough headroom for the current or higher rates of 
development for years to come while first and foremost improving ozone 
air quality. We plan to periodically reevaluate our assumptions in the 
future based on changes in the pace of development and may take 
additional actions to protect air quality as necessary or appropriate.
---------------------------------------------------------------------------

    \114\ The analysis is included in the docket for this rulemaking 
(Docket ID No. EPA-R08-OAR-2015-0709), Microsoft Excel spreadsheet 
titled, ``OGFIP Emissions_UO_2017-2021.xlsx.''
---------------------------------------------------------------------------

C. Major Comments Concerning Rule Applicability

    Comment: (VOC Emissions from Storage Vessels, Glycol Dehydrators 
and Pneumatic Pumps) Environmental organization commenters claimed that 
the proposed VOC emissions control requirements for storage vessels, 
glycol dehydrators and pneumatic pumps should be strengthened to place 
a priority on the option of routing emissions to a process to meet the 
emissions reduction requirement over the option of combusting those 
emissions. The commenters reference the EPA's FIP for the FBIR (FBIR 
FIP) \115\ and NSPS OOOOa \116\ as examples where the EPA has 
previously done this. The commenters also asserted that, to the extent 
that the EPA does permit gas combustion, it must only permit the use of 
VOC emissions control devices designed to reduce VOC emissions by 98 
percent and require annual control efficiency performance testing for 
those devices.
---------------------------------------------------------------------------

    \115\ See 40 CFR 49.4164(d).
    \116\ See 40 CFR 60.5375a(a)(1)(ii) and 60.5375a(a)(3).
---------------------------------------------------------------------------

    Response: Regarding the comment that priority should be codified 
for the option of routing emissions to a process to meet the emissions 
reduction requirement over the option of combusting those emissions, we 
disagree. The commenters reference the EPA's FBIR FIP and NSPS OOOOa as 
examples of placing such priority, but that is a misinterpretation of 
the nuances of these regulations. The FBIR FIP allows lower-efficiency 
combustion of produced gas during well completion and through the first 
90 days of production (using what is commonly known as pit flares). 
Within those first 90 days, the FBIR FIP requires all natural gas 
emissions from production operations and storage operations to be 
captured and routed through a closed-vent system to either a beneficial 
process or a high-efficiency combustion device, only allowing limited 
lower-efficiency combustion if routing to a process or high-efficiency 
combustion is temporarily infeasible (not to exceed 500 hours 
annually).\117\ The FBIR thus places a priority on routing to a process 
or high-efficiency combustion over lower-efficiency combustion, but 
there is equal allowance for routing to a process and routing to a 
high-efficiency combustion device. NSPS OOOOa does prioritize routing 
of produced gas to a process over combustion for each well completion 
operation with hydraulic fracturing during the separation flowback 
stage. However, the same prioritization is not expressed for treatment 
of gases and vapors during ongoing production post-completion, which is 
only covered under NSPS OOOOa for well sites through the requirements 
for centrifugal compressors, reciprocating compressors, pneumatic 
controllers, pneumatic pumps, storage vessels, and the collection of 
fugitive emissions components at a well site's affected 
facilities.\118\ Unlike the FBIR FIP and NSPS OOOOa, the final U&O FIP 
does not cover well completion operations. As the primary goal is to 
reduce existing source emissions to improve air quality in the Uinta 
Basin, the U&O FIP covers ongoing production operations at existing, 
new, and modified oil and natural gas sources that are not already 
subject to federal standards, including NSPS OOOO and OOOOa and NESHAP 
HH.
---------------------------------------------------------------------------

    \117\ See 40 CFR 49.4164(b) through (e) and 49.4165(d)(2)(ii).
    \118\ See 40 CFR 60.5380a, 60.5385a, 60.5393a, 60.5395a, 
60.5397a, 60.5410a, and 60.5411a.
---------------------------------------------------------------------------

    Regarding the comment that the EPA must only permit the use of VOC 
emissions control devices designed to reduce VOC emissions by 98 
percent and require annual control efficiency performance testing for 
those devices, we disagree. As explained earlier,\119\ we are 
reiterating our position in the proposed FIP that even devices that are 
designed to achieve at least 98 percent VOC control efficiency and able 
to demonstrate that control efficiency in controlled testing 
environments may not reliably achieve 98 percent control efficiency in 
the field on a continuous basis without stronger flare performance 
requirements than are currently in effect today in EPA's federal 
regulations that apply nationally. We believe that 95.0 percent 
continuous control efficiency is achievable when supplemented by the 
design, operational and parameter monitoring requirements in the final 
FIP. We expect that requirements for robust design of combustion 
devices, initial and subsequent performance testing (every 5 years) of 
enclosed combustors according to the procedures in NSPS OOOO and OOOOa 
(adopted by reference in the proposed FIP), and continuous monitoring 
of manufacturer-specified parameters that indicate optimal operation of 
a control device, including combustion temperature and a continuous 
pilot flame while emissions are routed to a device, are effective at 
indicating proper operation of a control device and more affordable and 
flexible than requiring annual performance testing of thousands of 
control devices or requiring exclusive use of particular devices. 
Requiring 95.0 percent continuous control efficiency also provides 
consistency with the EPA's federal regulations that apply nationally 
and consistency across all areas in the Uinta Basin, which operators 
are accustomed to complying with in the Uinta Basin already. Imposing 
more stringent control requirements on Indian country lands within the 
U& Reservation than are imposed in areas where the EPA has approved the 
UDEQ to implement the CAA may also unnecessarily create a competitive 
disadvantage to developing on the Indian country lands within the U&O 
Reservation, causing economic impacts to the Ute Indian Tribe and its 
citizens.
---------------------------------------------------------------------------

    \119\ See Section IV.F.3 of this preamble.
---------------------------------------------------------------------------

    Comment: Industry asserted that the definition of ``fugitive 
emissions component'' and the repair timeline and inspection frequency 
should be consistent with those in NSPS OOOOa, to avoid divergent 
requirements for operators with sources subject to LDAR under the NSPS 
and sources subject to LDAR under the FIP. Environmental organization 
commenters asserted that the FIP applicability to the requirement to 
implement an LDAR program should not be limited to the minimum 
threshold for sources with total emissions from the collection of all

[[Page 75364]]

storage vessel, glycol dehydrator and pneumatic pump emissions equal to 
or greater than 4 tpy VOC, because there is no inherent relationship 
between the quantity of vented emissions from tanks, dehydrators and 
pneumatic pumps (intended) and the source's fugitive emissions 
(unintended), and because the proposed LDAR requirements apply to 
components, such as compressors, that are categorically different than 
storage tanks, dehydrators and pneumatic pumps. These commenters 
asserted that all oil and natural gas sources should be required to 
implement an LDAR program, based on the results of recent studies 
indicating pneumatic devices often emit at higher rates than they are 
designed. The same commenters also asserted that the definition of 
``fugitive emissions component'' should not exclude natural gas-driven 
pneumatic controllers and pumps that are designed to vent as part of 
normal operations.
    Response: We agree with comments that the definition of ``fugitive 
emissions component'' should be consistent with that in NSPS OOOOa and 
we have revised the definition accordingly in the final FIP. We 
disagree with comments that the definition should not exclude pneumatic 
devices. The EPA has already codified that exclusion in NSPS OOOOa. 
Additionally, pneumatic devices are also subject to specific control 
requirements in the FIP, namely the requirements to control VOC 
emissions from pneumatic pumps at certain sources and to ensure that 
pneumatic controllers have a bleed rate of 6 scf/hr or less (i.e., 
``low-bleed''). We are aware of the studies regarding malfunctioning 
pneumatic controllers and refer the reader to the previous summaries of 
comments and our responses in this section regarding the applicability 
of pneumatic controllers. We agree with comments that the repair 
timeline should be consistent with those in NSPS OOOOa. We have not 
revised the LDAR inspection frequency of the proposed FIP to be 
entirely consistent with the frequency that is in NSPS OOOOa. The 
majority of the oil and natural gas sources that are subject to the FIP 
are existing sources that are not subject to NSPS OOOOa. The final 
semiannual inspection frequency for affected well sites is consistent 
with what is in the Utah Oil and Gas Rules, the CTG and NSPS OOOOa. For 
affected gathering and boosting compressor stations and natural gas 
processing plants, it is less frequent than the CTG and NSPS OOOOa in 
part.\120\ The Utah Oil and Gas Rules do not cover gathering and 
boosting compressor stations or natural gas processing plants and the 
Utah Permit Requirements require varying inspection frequencies ranging 
from semiannual to monthly. There are far fewer existing gathering and 
boosting compressor stations, and even less existing natural gas 
processing plants, on the Indian country lands within the U&O 
Reservation than there are well sites. Because the CTG VOC guidelines 
and the NSPS OOOOa methane standards require at least quarterly 
inspections for existing, new, and modified compressor stations and 
natural gas processing plants, but the NSPS OOOOa VOC standards for new 
and modified compressor stations and natural gas processing plants and 
the Utah Permit Requirements for existing compressor stations and 
natural gas processing plants mandate LDAR inspection frequencies 
widely ranging from semi-annual to monthly, we determined that it is 
reasonable to simplify compliance with the final FIP by requiring a 
consistent semi-annual inspection frequency for all types of oil and 
natural gas sources. We note that the gathering and boosting compressor 
stations and natural gas processing plants subject to NSPS OOOOa would 
be required to comply with those fugitive emissions inspection 
requirements, rather than the FIP. We have, however, revised the 
procedural LDAR requirements of the proposed FIP to maximize 
consistency with the equivalent requirements of NSPS OOOOa, which 
addresses the concern that operators would be subject to divergent 
procedural requirements for sources subject to LDAR under the NSPS and 
sources subject to LDAR under the FIP.
---------------------------------------------------------------------------

    \120\ As discussed earlier in Section V.D. of this preamble, we 
acknowledge that NSPS OOOOa currently contains two different LDAR 
inspection standards for well sites and gathering and boosting 
compressor stations controlling methane emissions and those 
controlling VOC emissions and that the EPA has published a proposed 
national rule to reduce methane and other pollutants from existing, 
new, and modified sources in the oil and natural gas industry that 
proposes to align those standards to require semiannual LDAR 
inspections for all well sites (no exemption for low-production 
wells) and quarterly LDAR inspections for all compressor stations 
(see 86 FR 63110, Nov. 15, 2021).
---------------------------------------------------------------------------

    In response to the comment criticizing our proposal to apply LDAR 
requirements to sources that are required to control facility-wide VOC 
emissions from the collection of all storage vessels, glycol 
dehydrators and pneumatic pumps (i.e., emissions from those equipment 
are greater than or equal to 4 tpy), we do agree that there is not 
strong evidence of a direct inherent relationship between the quantity 
of vented emissions from the collection of all storage vessels, 
dehydrators and pneumatic pumps (intended) and a source's fugitive 
emissions (unintended). We also agree that the proposed LDAR 
requirements apply to components, such as compressors, that are 
categorically different than storage vessels, dehydrators and pneumatic 
pumps. But we disagree that these observations compel the conclusion 
that the FIP should apply LDAR requirements to all sources, for the 
reasons explained below. Applying LDAR requirements to all existing, 
new, and modified oil and natural gas sources would be significantly 
more stringent than the Utah Oil and Gas Rules given the total number 
of existing oil and natural gas sources on the Reservation (6,870), 
versus the number of sources we estimate will be required to implement 
LDAR under this final rule (3,100). An even broader LDAR applicability 
than what is being finalized today, which itself is already broader 
than that in the Utah Oil and Gas Rules, would create inconsistency 
across all areas of the Basin that may prompt operators to shift 
development and associated emissions to areas of the Basin where the 
EPA has approved the UDEQ to implement the CAA or to cease existing 
production on Indian country lands within the U&O Reservation, both of 
which could have economic disbenefits for the Ute Indian Tribe. We 
evaluated whether there was a more appropriate measure to limit 
applicability to a required LDAR program in the final FIP. We evaluated 
exempting ``low-production'' well sites, or those with total daily 
production less than or equal to 15 boe, similar to the CTG. We also 
evaluated applying LDAR requirements to all oil and natural gas sources 
that meet either criterion: (1) VOC emissions from the collection of 
all storage vessels, glycol dehydrators and pneumatic pumps that are 
greater than or equal to 4 tpy; or (2) well sites with production 
greater than 15 boe per day. Applying LDAR to all oil and natural gas 
sources was analyzed as part of regulatory Option 3. In the final FIP 
we are applying LDAR requirements to all oil and natural gas sources 
that meet either criterion: (1) VOC emissions from the collection of 
all storage vessels, glycol dehydrators and pneumatic pumps that are 
greater than or equal to 4 tpy; or (2) well sites with production 
greater than 15 boe per day. We determined this approach would address 
the comment that there is not strong evidence of a direct inherent 
relationship between the quantity of vented emissions from storage 
vessels, dehydrators and pneumatic pumps

[[Page 75365]]

(intended) and a source's fugitive emissions (unintended). This 
approach is a middle ground that provides some consistency with both 
the LDAR applicability of the Utah Oil and Gas Rules and that of the 
CTG for existing sources. Additionally, from an air quality protection 
perspective, it is reasonable to make a change from what was proposed 
that would maximize VOC emissions reduced without requiring all 
existing oil and natural gas sources to implement an LDAR program. We 
acknowledge some recent studies indicating that leaks have consistently 
been observed at certain well sites with less than 15 boe per day.\121\ 
We also acknowledge that the EPA has published a proposed national rule 
to reduce methane and other pollutants from existing, new, and modified 
sources in the oil and natural gas industry that proposes to repeal 
amendments in the 2020 Technical Rule that exempted low-production well 
sites from monitoring fugitive emission.\122\ We may revisit this final 
action in the future based on any final action we take under CAA 
section 111 with the Oil and Natural Gas Sector Climate Review 
rulemaking to address application of LDAR at sources covered by this 
FIP in a manner similar to the final national rule's provisions for 
sources that it covers. Also, if the Uinta Basin Ozone Nonattainment 
Area's Marginal classification is reclassified (``bumped up'') to a 
Moderate nonattainment classification, or if air quality concerns 
otherwise warrant, we may conclude that further rulemaking is necessary 
or appropriate.
---------------------------------------------------------------------------

    \121\ A study by the Boulder County Health Department, ``Leak 
Inspection and Repair at Oil and Gas Well Sites
    Boulder County Public Health Voluntary Inspection Program 
Results 2014-2018,'' tracked leaks at well pads in Boulder County 
over a five-year period using OGI. The program resulted in 1,022 
inspections at 147 well pad sites across the county from 2014 
through 2018. Cumulatively, gas leaks were detected at 86 percent 
[i.e., 126/147] of inspected sites, with the percentage each year 
ranging from 38 percent to 49 percent. 64 percent of the sites with 
leaks experienced them in multiple calendar years. An earlier 
version of the study (2014-2016) was referenced via comments on the 
proposed NSPS OOOOa technical revisions, available in the docket for 
that rulemaking at https://www.regulations.gov (Docket ID No. EPA-
HQ-OAR-2010-0483-0748). Since then, two additional study years 
through 2018 were added. The report is available in the docket for 
this rulemaking (Docket ID No. EPA-R08-OAR-2015-0709). We conducted 
an analysis showing that of the average BOED per well ranged from 
1.6 to 2.3 from 2014-2018, indicated in the November 18, 2019, email 
from Cindy Beeler, EPA, available in the docket for this rulemaking 
at https://www.regulations.gov (Docket ID No. EPA-R08-OAR-2015-
0709); and Deighton, J. A., Townsend-Small, A., Sturmer, S. J., 
Hoschouer, J., & Heldman, L. (2020). Measurements show that marginal 
wells are a disproportionate source of methane relative to 
production. Journal of the Air & Waste Management Association, 
available at https://www.tandfonline.com/doi/full/10.1080/10962247.2020.1808115, accessed Mar. 14, 2022.
    \122\ See 86 FR 63110 (Nov. 15, 2021).
---------------------------------------------------------------------------

    Comment: Environmental organization commenters asserted that the 
proposed FIP requirement that all pneumatic controllers be continuous 
low-bleed controllers, consistent with NSPS OOOO and OOOOa, is 
insufficient, adding that while continuous low-bleed controllers are 
superior to high-bleed controllers, they are documented in recent 
studies to emit significant VOC emissions both from normal operations 
(i.e., by design) and often due to equipment malfunctions. The 
commenters asserted that recent evidence indicates zero-emissions 
controllers (e.g., electric valve, instrument air-actuated, and solar 
power valve actuated) are cost-effective, widely used, and 
environmentally necessary.
    Response: We disagree that the EPA mandating zero-emissions 
controllers is necessary or required here and provided reasoning in the 
proposed FIP for requiring low-bleed pneumatic controllers rather than 
zero-emissions pneumatic controllers. The EPA believes that, within the 
context of this rulemaking and the specific purposes it is intended to 
accomplish, we do not have sufficient information to finalize such a 
requirement for the Indian country lands within the U&O Reservation at 
this time. Further, including such a requirement in the final FIP would 
not serve to further the EPA's goal of providing regulatory consistency 
at this time. In the interest of improving air quality by achieving 
emissions reductions as soon as possible and in a manner that promotes 
regulatory consistency across all areas in the Uinta Basin, we are 
finalizing the FIP with the requirement that pneumatic controllers be 
at least low-bleed. Although zero-bleed controllers are not 
specifically required, the regulatory text of the final U&O FIP does 
not prohibit operators from using zero-bleed controllers to comply with 
the rule, as it incorporates by reference the pneumatic controller 
requirements of NSPS OOOOa at 40 CFR 60.5390a, which specify at 40 CFR 
60.5390a(c)(1) that ``Each pneumatic controller affected facility at a 
location other than at a natural gas processing plant must have a bleed 
rate less than or equal to 6 standard cubic feet per hour.'' (emphasis 
added). We acknowledge that the EPA's Oil and Gas Sector Climate Review 
Proposed Rule proposes to require pneumatic controllers to have zero 
emissions, subject to limited exceptions.\123\ However, that proposed 
requirement is not yet final and the EPA did not include a similar 
requirement as part of the proposal for this rulemaking. We may revisit 
this final action in the future based on any final action we take under 
CAA section 111 with the Oil and Natural Gas Sector Climate Review 
rulemaking to address pneumatic controllers at sources covered by this 
FIP in a manner similar to the final national rule's provisions for 
sources that it covers. Also, if the Uinta Basin Ozone Nonattainment 
Area's Marginal classification is reclassified (``bumped up'') to a 
Moderate nonattainment classification, or if air quality concerns 
otherwise warrant, we may conclude that further rulemaking is necessary 
or appropriate.
---------------------------------------------------------------------------

    \123\ See 86 FR 63110, Nov. 15, 2021.
---------------------------------------------------------------------------

    Comment: Environmental organization commenters asserted that the 
proposed FIP should require capture and control of VOC emissions during 
truck loading and unloading. The commenters claimed that the EPA failed 
to take into account that truck loading and unloading is an activity 
that occurs repeatedly and provides an opportunity for emissions 
reductions and the EPA failed to provide calculations to support the 
cost-prohibitiveness of requiring such controls.
    Response: We disagree. In developing the proposed rule, we found 
that the estimated annual share of VOC emissions from truck loading and 
unloading in the UBEI2014 was only 2 percent of the VOC emissions 
inventory and such a requirement would not be expected to contribute to 
meaningful VOC reductions compared to submerged fill and bottom loading 
requirements. The UBEI2017-Update indicates that truck loading and 
unloading represents an even smaller portion of the VOC emissions 
inventory at 1 percent. We did not receive new information during the 
public comment period on the cost of capture and control of emissions 
from truck loading and unloading to compel us to change the proposed 
requirement. Therefore, we are finalizing truck loading and unloading 
requirements as proposed. We may consider such a requirement in a 
future rulemaking if additional action is required to address air 
quality impacts from ozone pollution, or we may consider it as a 
creditable emissions reduction to offset permitting of a new or 
modified major source or demonstrating general conformity. We 
acknowledge that the EPA's Oil and Natural Gas Sector Climate Review 
Proposed Rule solicits comment on whether the EPA should propose to 
require capture and control

[[Page 75366]]

of VOC and methane emissions from truck loading and unloading.\124\ We 
may revisit this final action in the future based on any proposal and 
subsequent final action we take under CAA section 111 for the Oil and 
Natural Gas Sector to address truck loading and unloading at sources 
covered by this FIP in a manner similar to a final national rule's 
provisions for sources that it covers. Also, if the Uinta Basin Ozone 
Nonattainment Area's Marginal classification is reclassified (``bumped 
up'') to a Moderate nonattainment classification, or if air quality 
concerns otherwise warrant, we may conclude that further rulemaking is 
necessary or appropriate.
---------------------------------------------------------------------------

    \124\ See 86 FR 63110, Nov. 15, 2021.
---------------------------------------------------------------------------

    Comment: Several commenters claimed the EPA should regulate VOC 
emissions from additional equipment or activities as part of the final 
FIP, including oil and natural gas wastewater pond evaporation 
facilities, intermittent bleed pneumatic devices, well production 
associated gas and small two-stroked rich-burn engines. Commenters also 
asserted that the EPA should regulate sources of NOX 
emissions as part of the final FIP, as it is an ozone precursor and 
some studies have indicated the NOX reductions in the Uinta 
Basin may result in meaningful reductions in the formation of ozone. 
NOX emissions sources that commenters asserted should be 
covered by the FIP include engines, turbines, boilers, heaters, flares 
and thermal incinerators.
    Response: Regarding the comments that the FIP should cover 
additional VOC emissions sources, we are not finalizing emissions 
control requirements for any sources in addition to what was proposed. 
The primary reason is that we proposed to act on the sources as to 
which we had sufficient cost and emissions reduction information 
specific to the Uinta Basin and from which we expected that significant 
emissions reductions could be achieved in a manner that maximizes 
regulatory consistency across all areas in the Basin. We are finalizing 
this rule as applicable to those sources in order to achieve emissions 
reductions quickly and improve air quality and public health within the 
U&O Reservation as soon as possible. It may be possible in the future 
to achieve further reductions by regulating additional sources, and if 
we conclude that such further regulation is appropriate, we will 
propose action on it in a future U&O Reservation rulemaking in order to 
receive public comment. The EPA is actively participating in ongoing 
research to better understand emissions from all of the aforementioned 
VOC emissions sources in the Uinta Basin. We acknowledge that the EPA's 
Oil and Natural Gas Sector Climate Review Proposed Rule has presented 
new information and analysis that will likely be relevant for reducing 
emissions on the U&O Reservation and solicits additional information on 
evaluating and potentially covering at least some of these sources on a 
national basis.\125\ Our assessment of new, potentially relevant 
information will continue in the context of the Climate Review Rule 
still being developed. If we finalize a national Climate Review Rule in 
the future, its requirements will apply directly to covered sources. As 
to sources not covered by a final national rule, we may find it 
necessary or appropriate to revisit this final action in the future and 
revise it through the rulemaking process (including public notice and 
comment) based on information evaluated in issuance of that final 
national rule. Also, if the Uinta Basin Ozone Nonattainment Area is 
reclassified to a Moderate nonattainment classification, or if air 
quality concerns otherwise warrant, we may find that further rulemaking 
is necessary or appropriate.
---------------------------------------------------------------------------

    \125\ See 86 FR 63110 (Nov. 15, 2021).
---------------------------------------------------------------------------

    Regarding the comments that the FIP should cover sources of 
NOX emissions, we maintain our conclusion from the proposed 
rule that most recent studies on winter ozone in the Uinta Basin 
indicate that ozone in the Basin is sensitive to changes in VOC 
emissions and that the effect of changes in NOX emissions is 
less certain, and, therefore, VOC reductions will have the most cost-
effective impact in reducing winter ozone formation in the Basin. We 
may consider focusing on NOX emissions reduction in future 
rulemakings if additional action is required to address air quality 
impacts from ozone pollution and any control technology and cost 
information commenters provided may be useful in those cases. We may 
also consider future NOX emissions reductions as creditable 
to offset permitting of a new or modified major NOX 
emissions source or in demonstrating general conformity. We refer the 
reader to the Response to Comments document in the docket for this 
rulemaking for more details on our consideration comments related to 
regulating additional VOC emissions sources and regulating 
NOX emissions sources.
    Comment: Industry commenters asserted that the U&O FIP should only 
apply to Indian country lands within the Uinta Basin Ozone 
Nonattainment Area boundary, rather than all Indian country lands 
within the U&O Reservation, as proposed. Environmental organization 
commenters asserted that the term ``Uintah and Ouray Reservation'' must 
be defined in the regulatory text of the rule and should mean the lands 
``within the exterior boundaries of the U&O Reservation.''
    Response: We disagree with the comment that the FIP should only 
apply to Indian country lands within the Uinta Basin Ozone 
Nonattainment Area boundary. We are finalizing the FIP to impose the 
VOC emissions reduction requirements to all Indian country lands within 
the U&O Reservation for multiple reasons: (1) Implementing the 
requirements only to sources in the nonattainment area would be complex 
to implement, because it would present a second layer to already 
complex case-specific determinations of CAA jurisdiction and 
applicability to the FIP and would result in operators potentially 
needing to comply with different regulatory requirements within Indian 
country; and (2) Applying the FIP only to the Indian country portions 
of the nonattainment area would result in inconsistent requirements 
across all areas in the Uinta Basin, as the Utah Oil and Gas Rules 
apply to all oil and natural gas sources in areas of the Bain where the 
EPA has approved the UDEQ to implement the CAA, not just those in the 
nonattainment area. We agree with the comment that the term ``U&O 
Reservation'' was undefined in the regulatory text of the proposed rule 
and have added clarification to the final rule regulatory text in 40 
CFR 49.4169 that ``U&O Reservation'' refers to the ``Uintah and Ouray 
Indian Reservation.'' We disagree that the rule text should state that 
it applies ``within the exterior boundaries of the U&O Reservation.'' 
The proposed rule stated that it applies to the ``Indian country lands 
within the U&O Reservation.'' There are non-Indian country lands within 
the exterior boundaries of the U&O Reservation. Therefore, we have 
added a definition of ``Indian country'' to 40 CFR 49.4171 that 
references the corresponding definition at 18 U.S.C. 1151.

D. Major Comments Concerning Monitoring and Testing Requirements

    Comment: Industry commenters asserted that the proposed requirement 
to perform auditory/visual/olfactory (AVO) surveys while crude oil, 
condensate, intermediate hydrocarbon liquids and produced water storage 
vessels are being filled is impractical, due to the non-static nature 
of separators cycling and liquids transfer

[[Page 75367]]

that could result in an operator being on location for a burdensome 
period of time to comply. The commenters also asserted that the 
proposed required monthly AVO inspections should not be finalized 
because they go beyond NSPS OOOOa and the UDEQ requirements and are 
duplicative of the proposed monthly inspections required in 40 CFR 
49.4183(c) and (e) and the semi-annual monitoring of fugitive emissions 
components in 40 CFR 49.4179. The commenters asserted that the final 
FIP should provide more flexibility in determining compliance with the 
no detectable emissions limit for covers and closed-vent systems by 
allowing multiple options to perform inspections, including AVO and 
OGI.
    Response: We agree with the commenters that the monitoring 
requirements in proposed 40 CFR 49.4183(c), (d) and (e) contained some 
redundancy and risk affected sources being subject to duplicative 
requirements. We have revised paragraphs (c) through (e) to merge 
paragraphs (c) and (d) (now in 40 CFR 49.4182 in the final FIP) for 
more consistency with NSPS OOOOa. We have also incorporated more 
streamlined language that is still consistent with that section, rather 
than incorporate by reference the cover and closed vent system 
inspection requirements from 40 CFR 60.5416a(c). Additionally, we agree 
with comments that, in addition to AVO inspections, consistent with 
NSPS OOOOa, the FIP should provide the option to conduct optical gas 
imaging inspections of covers and closed vent systems at the same 
frequency as required fugitive emissions inspections and have included 
a similar option.
    Regarding the proposed requirement that monthly inspections must be 
performed while storage vessels are being filled, we acknowledge that 
storage vessel filling at certain well sites may occur less frequently 
than at other sites, due to the non-static nature of separator cycling 
and liquids transfer. We have removed the portion of the requirement 
that inspections must be performed while storage vessels are being 
filled. Because one cannot always hear or smell emissions from the 
collection of all storage vessels, we continue to hold the view that 
inspections conducted during filling events can be valuable for 
identifying storage vessel and closed vent system integrity defects, as 
filling events generate the largest flashing emissions. To maintain the 
effectiveness of visual inspections in identifying defects, in light of 
removal of the requirement that they be conducted during filling 
events, we have added language to 40 CFR 49.4182(c) that inspectors 
should note whether there are signs of oil releases around storage 
vessel thief hatches, seals and pressure relief valves (i.e., staining 
on the storage vessel), which may indicate over-pressure events that 
have occurred when the storage vessel was being filled. We emphasize 
that final 40 CFR 49.4173(c)(1) requires that all flashing, working, 
standing and breathing losses from storage vessels must be routed 
through a closed-vent system. This includes flashing losses during 
filling events.
    Comment: Industry commenters suggested that the FIP should include 
language consistent with the provisions of NSPS OOOOa for unsafe and 
difficult to monitor fugitive emissions components and delay of repair 
if repair or replacement is technically infeasible, would require a 
vent blowdown, compressor station shutdown, well shutdown or shut-in, 
or would be unsafe to repair during operation of the unit.
    Response: We agree and have revised the language of the proposed 
FIP to include language more consistent with the difficult-to-monitor 
and unsafe-to-monitor provisions of the NSPS, including exceptions for 
the timelines to inspect and repair such fugitive emissions components 
and requirements that the fugitive emissions plan include the 
specialized timelines.
    Comment: Environmental organization commenters asserted that, given 
the urgent need to reduce ozone pollution in the Uinta Basin and the 
high cost-effectiveness of LDAR, the FIP must require quarterly or 
monthly LDAR surveys instead of the proposed semi-annual surveys, and 
must require leaking equipment repair more quickly than 30 days after 
discovering the leak. While the proposed requirements are consistent 
with NSPS OOOOa, the commenters referenced that EPA either contemplated 
during proposal or had required such provisions in previous versions of 
NSPS OOOOa and that other oil and gas producing states impose such 
requirements.
    Response: Regarding LDAR survey frequency, we direct the reader to 
our response to comments on LDAR applicability. We disagree with 
commenters suggesting the final FIP should contain stricter procedural 
LDAR requirements than are effective in NSPS OOOOa, including repair of 
leaking equipment more quickly than 30 days after discovering the leak. 
We determined that finalizing procedural LDAR requirements that are 
consistent with NSPS OOOOa (and by extension, UDEQ oil and gas rules) 
addresses the concern expressed by other commenters that affected 
operators would have to comply with different fugitive emissions 
monitoring programs than they are required to implement for sources in 
the same area that are subject to NSPS OOOOa or the UDEQ Oil and Gas 
Rules and will allow for more straightforward compliance throughout the 
Basin. Implementing LDAR requirements in the final FIP that are 
procedurally different than the requirements in NSPS OOOOa or the Utah 
Oil and Gas rules may also potentially create disincentives for 
development on the Reservation and of Tribally owned resources, leading 
to economic disadvantages for the Ute Indian Tribe and its members. 
While we appreciate the alternative cost information and comparison of 
state oil and gas LDAR requirements provided by commenters, we do not 
agree that the information provided is relevant to establishing 
requirements for monitoring in the Uinta Basin for the purposes and 
goals of this rulemaking. We determined that the LDAR procedural 
requirements will still result in meaningful VOC emissions reductions 
from LDAR on the Indian country lands within the U&O Reservation, while 
avoiding a complex regulatory scheme for entities that operate some 
sources subject to the FIP requirements and other sources subject to 
NSPS OOOOa or requirements in areas where the EPA has approved the UDEQ 
to implement the CAA.

E. Major Comments Concerning Recordkeeping and Reporting

    Comment: Industry commenters suggested that the recordkeeping and 
reporting requirements should align with those in the UDEQ regulations, 
saying that the proposed FIP requirements were in many cases more 
detailed, prescriptive and stringent than those in UDEQ regulations and 
could result in discouraging oil and gas development on the U&O 
Reservation. Examples provided of discrepancies in recordkeeping 
requirements included that the UDEQ does not require annual compliance 
reports or that records be kept of all required monitoring of 
operations every time an operator is on site. The commenters referenced 
other examples where the UDEQ requires certain records that were not 
proposed in the U&O FIP. The commenters suggested recordkeeping and 
reporting requirements should be limited to those that help demonstrate 
compliance with the VOC emission reduction requirements, such as 
records of instances when closed-vent-systems conveying emissions to a 
control device bypass the device, records of observed

[[Page 75368]]

instances when the combustor or flare is inoperable or not operating 
properly, as well as information on actual emissions. The commenters 
encouraged the EPA to increase the number of recordkeeping requirements 
in alignment with the UDEQ requirements in exchange for removing the 
annual compliance reporting requirement.
    Response: We agree with commenters that required elements of 
recordkeeping and reporting in the final FIP should be limited to the 
most relevant information to assure compliance with the emissions 
control requirements of the FIP. We have revised the list of required 
records accordingly and streamlined the required annual report content 
to only include summaries of the records of the most relevant 
information to demonstrate compliance. We disagree with commenters that 
the U&O FIP should not require compliance reporting. Reporting at 
regular intervals is an important mechanism to ensure that regulations 
are enforceable as a practical matter. We recognize that the UDEQ 
regulations do not require annual compliance reporting and are not 
commenting on the efficacy of the UDEQ's regulations with this 
response. It is not reasonable for the EPA to rely only on records to 
assure compliance, particularly in an area with thousands of affected 
facilities, as we do not have the resource capacity to visit every 
facility to access them and it would be inefficient to use CAA section 
114 authority on a case-by-case basis to obtain them. It is common for 
the EPA to require both recordkeeping and reporting in CAA regulations, 
using the broad authority of section 114, sufficient for practical 
enforceability of the requirements and so that the public has 
transparent access to records demonstrating compliance.
    Comment: Commenters requested the proposed requirement to keep 
records of the inspector signature be removed from the recordkeeping 
and reporting requirements, because many operators have moved to 
digital recordkeeping systems and physical signatures are not feasible 
with those systems. Commenters instead requested that it would be 
sufficient to just require inspector IDs be maintained and reported.
    Response: We agree that recordkeeping and reporting requirements 
should facilitate the increasing use of digital recordkeeping and have 
finalized regulatory text in 40 CFR 49.4184(a)(1)(v)(D) accordingly to 
require the inspector's name or identification number.

F. Major Comments Concerning Cost-Benefit Analysis

    Comment: Industry commenters asserted that the cost benefit 
analysis completed by the EPA for the proposed FIP lacked transparency 
and relied on information collected over 5 years ago for the CTG, 
failing to check the accuracy of the cost information included for that 
action and disregarding information previously submitted for the 
proposed CTG specific to VOC emissions control and storage vessel 
retrofit costs. Commenters incorporated those comments by reference in 
their comments to the proposed U&O FIP. The commenters also claimed 
that the EPA did not account for all burdens and costs associated with 
compliance with the VOC emissions control requirements, particularly 
higher costs for retrofitting existing storage vessels with controls, 
monthly storage vessel inspections and associated recordkeeping and 
reporting costs.
    Response: The EPA responded to the referenced comments submitted 
for the draft CTG and we are, therefore, not including new responses to 
those comments here.\126\ We note that in response to those comments, 
the EPA did make small changes to the cost elements included in the 
cost analysis for existing storage vessels that did not result in any 
change to the EPA's recommended applicability threshold for storage 
vessels in the final CTG. We based costs for retrofitting existing 
storage vessels on those costs in the final CTG that included those 
minor revisions. The costs recognize that it is more expensive to 
retrofit existing storage vessels for emissions control than to install 
controlled equipment upon construction. We did not update any of those 
costs for the final FIP, as we did not receive any new cost information 
on retrofitting storage vessels during the comment period for the 
proposed FIP. We acknowledge that the EPA's Oil and Natural Gas Sector 
Climate Review Proposed Rule \127\ uses updated costs and emissions 
reduction estimates, including for fugitive emissions monitoring, 
retrofitting of existing storage vessels, storage vessel monthly 
inspections, installing zero emissions pneumatic devices, and 
associated recordkeeping and reporting costs.128 129 In 
order to achieve emissions reductions quickly and improve air quality 
and public health within the U&O Reservation as soon as possible, we 
have not updated our costs and emissions reductions estimates for the 
final FIP using those proposed estimates. If we conclude that further 
regulation is necessary or appropriate in the future, we will propose 
action on it in a future U&O Reservation rulemaking in order to receive 
public comment and would analyze any such rulemaking using the best 
available costs and emissions reductions estimates at that time.
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    \126\ Responses to Public Comments on the Draft Control 
Techniques Guidelines for the Oil and Natural Gas Industry. Final 
Document. October 2016. Available in https://www.regulations.gov, 
Document ID No.EPA-HQ-OAR-2015-0216-0235, accessed Mar. 14, 2022.The 
Response to Comments Document for the U&O FIP summarizes the 
comments and the EPA's responses to those comments on the proposed 
CTG, as they relate to various provisions of the proposed U&O FIP.
    \127\ See 86 FR 63110, Nov. 15, 2021.
    \128\ Regulatory Impact Analysis for the Proposed Standards of 
Performance for New, Reconstructed, and Modified Sources and 
Emissions Guidelines for Existing Sources: Oil and Natural Gas 
Sector Climate Review. Nov. 14, 2021, available at https://www.regulations.gov, Document ID No. EPA-HQ-OAR-2021-0317-0173, 
accessed Mar. 14, 2022.
    \129\ Oil and Natural Gas Sector: Emission Standards for New, 
Reconstructed, and Modified Sources and Emission Guidelines for 
Existing Sources: Oil and Natural Gas Sector Climate Review. October 
2021, available at https://www.regulations.gov, Document ID No. EPA-
HQ-OAR-2021-0317-0166. In general, many of the cost factors used 
were taken from technical support documents for earlier rulemakings, 
such as the 2012 NSPS OOOO, the 2016 CTG and NSPS OOOOa, and the 
2020 Technical Rule, and were only updated to reflect 2019$. Most of 
the cost and emission reduction factors that were reevaluated for 
the 2021 proposed rule evaluated alternative compliance options, 
rather than significantly updating costs for control measures. Cost 
factor changes were characterized as minor. For example, see Tables 
12-8a and 12-8b.
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    Comment: Industry commenters also incorporated by reference 
portions of the comments they submitted for the draft CTG in their 
comments on the proposed FIP with regard to LDAR costs being 
underestimated.
    Response: Again, the EPA previously responded to the referenced 
comments in issuing the final CTG and, therefore, we are not including 
new responses to those comments here. While we based the costs of 
implementing an LDAR program at existing oil and natural gas sources 
for the proposed FIP on those equivalent costs used for the final CTG, 
since the proposed FIP was issued the EPA has issued final technical 
revisions to NSPS OOOOa that included changes to fugitive emissions 
monitoring costs and emissions reduction estimates.\130\ We have 
updated our costs and emissions reductions estimates for the final U&O 
FIP, relying in part on the updated fugitive emissions monitoring costs 
and emissions reduction estimates

[[Page 75369]]

used for the final NSPS OOOOa revisions. We also acknowledge that the 
EPA has published a proposed national rule to reduce methane and other 
pollutants from existing, new, and modified sources in the oil and 
natural gas industry \131\ that uses further updated fugitive emissions 
monitoring costs and emissions reduction estimates. In order to achieve 
emissions reductions quickly and improve air quality and public health 
within the U&O Reservation as soon as possible, we have not updated our 
costs and emissions reductions estimate for the final FIP using those 
proposed estimates. If we conclude that further regulation is necessary 
or appropriate in the future, we will propose action on it in a future 
U&O Reservation rulemaking in order to receive public comment and would 
analyze any such rulemaking using the best available costs and 
emissions reductions estimates at that time.
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    \130\ The Federal Register document for the rulemaking, known as 
the technical amendments to the 2016 NSPS (85 FR 57398, Sept. 15, 
2020), is available at https://www.regulations.gov, Document ID No. 
EPA-HQ-OAR-2017-0483 2247, accessed Mar. 14, 2022.
    \131\ See 86 FR 63110, Nov. 15, 2021.
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    Comment: Environmental organization commenters asserted several 
flaws in the EPA's cost-benefit analysis regarding the societal 
benefits that will result from the avoided methane emissions due to VOC 
emissions reductions under the FIP. The most prominent flaw the 
commenters noted is the use of an interim value for the social cost of 
methane (SC-CH4) that arbitrarily accounts only for domestic 
benefits of reduced methane emissions, which diverted from previously 
long-established and scientifically supported factors recognizing that 
methane emissions reductions have global benefits. The commenters also 
noted that the EPA arbitrarily discounted future climate effects at a 7 
percent discount rate in addition to a 3 percent discount rate, which 
is inconsistent with Circular A-4's requirements to distinguish social 
discount rates from rates based on private returns to capital; to make 
plausible assumptions; to adequately address uncertainty, especially 
over long-time horizons; and to rely on the best available economic 
data and literature.
    Response: We acknowledge these comments and that EPA policies have 
changed since we developed and analyzed the benefits of the proposed 
U&O FIP. The SC-CH4 estimates presented in the RIA for the 
final U&O FIP are the SC-CH4 estimates presented in the 
Technical Support Document: Social Cost of Carbon, Methane, and Nitrous 
Oxide Interim Estimates under Executive Order 13990 (IWG 2021) 
(hereafter, ``February 2021 TSD''). EPA has evaluated the SC-
CH4 estimates in the February 2021 TSD and has determined 
that these estimates are appropriate for use in estimating the social 
benefits of CH4 emission reductions expected to result from 
this final rule.\132\ These SC-CH4 estimates are interim 
values developed for use in benefit-cost analyses until updated 
estimates of the impacts of climate change can be developed based on 
the best available science and economics. After considering the TSD, 
and the issues and studies discussed therein, EPA concludes that it 
agrees with the rationale for these estimates presented in the TSD and 
summarized below.
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    \132\ We note that the monetized climate benefits presented in 
the RIA analysis and discussed here are not a part of the technical 
or legal basis of this action but are instead presented as part of 
the RIA analysis as required pursuant to Executive Orders, including 
E.O. 12866.
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    In particular, the IWG concluded that the SC-GHG estimates 
developed under E.O. 13783, and used in the RIA of the proposed rule, 
fail to reflect the full impact of GHG emissions in multiple ways. 
First, the IWG concluded that those estimates fail to capture many 
climate impacts that can directly and indirectly affect the welfare of 
U.S. citizens and residents. Examples of affected interests include 
direct effects on U.S. citizens and assets located abroad, 
international trade, U.S. military assets and interests abroad, and 
tourism, and spillover pathways such as economic and political 
destabilization and global migration that can lead to adverse impacts 
on U.S. national security, public health, and humanitarian concerns. 
Those impacts are better captured within global measures of the social 
cost of greenhouse gases.
    In addition, assessing the benefits of U.S. GHG mitigation 
activities requires consideration of how those actions may affect 
mitigation activities by other countries, as those international 
mitigation actions will provide a benefit to U.S. citizens and 
residents by mitigating climate impacts that affect U.S. citizens and 
residents. A wide range of scientific and economic experts have 
emphasized the issue of reciprocity as support for considering global 
damages of GHG emissions. Using a global estimate of damages in U.S. 
analyses of regulatory actions allows the U.S. to continue to actively 
encourage other nations, including emerging major economies, to take 
significant steps to reduce emissions. The only way to achieve an 
efficient allocation of resources for emissions reduction on a global 
basis--and so benefit the U.S. and its citizens--is for all countries 
to base their policies on global estimates of damages.
    Therefore, for purposes of the RIA for this final rule EPA centers 
attention on a global measure of SC-CH4. This approach is 
the same as that taken in EPA regulatory analyses over 2009 through 
2016, as well as in more recent regulatory analyses, including for the 
Final Revised Cross-State Air Pollution Rule (CSAPR) Update for the 
2008 Ozone NAAQS.\133\ The present value of net benefits is estimated 
as the difference in the present values of monetized benefits and costs 
calculated at the 3 percent percent discount rates. We do not discount 
future climate effects at a 7 percent discount rate.
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    \133\ Regulatory Impact Analysis for the Final Revised Cross-
State Air Pollution Rule (CSAPR) Update for the 2008 Ozone NAAQS 
(EPA-452/R-21-002) (EPA Office of Air Quality Planning and 
Standards, Mar. 2021); available at https://www.epa.gov/sites/default/files/2021-03/documents/revised_csapr_update_ria_final.pdf, 
accessed July 30, 2021.
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    Finally, a comprehensive estimate of climate damages to U.S. 
citizens and residents does not currently exist in the literature. 
Existing estimates are both incomplete and an underestimate of total 
damages that accrue to the citizens and residents of the U.S. because 
they do not fully capture the regional interactions and spillovers 
discussed above, nor do they include all of the important physical, 
ecological, and economic impacts of climate change recognized in the 
climate change literature, as discussed further below. EPA, as a member 
of the IWG, will continue to review developments in the literature, 
including more robust methodologies for estimating the magnitude of the 
various direct and indirect damages to U.S. populations from climate 
impacts and reciprocal international mitigation activities, and explore 
ways to better inform the public of the full range of carbon impacts. 
While the IWG works to assess how best to incorporate the latest, peer 
reviewed science to develop an updated set of SC-GHG estimates, it 
recommended the interim estimates to be the most recent estimates 
developed by the IWG prior to the group being disbanded in 2017. The 
estimates rely on the same models and harmonized inputs and are 
calculated using a range of discount rates.
    The response to comments document and the RIA for the final FIP 
provide more detailed discussion of the revised approach to estimating 
climate benefits from reducing methane as a benefit to reducing VOC.

[[Page 75370]]

G. Other Comments of Significant Interest

Comments Concerning CAA Nonattainment Requirements
    Comment: Environmental organization commenters asserted that CAA 
general conformity requirements apply to the EPA's issuance of this 
FIP, requiring a conformity analysis and a conformity determination.
    Response: We disagree with these comments because under 40 CFR 
93.153(a), the final action will not cause emissions increases above 
the threshold required to trigger conformity requirements (i.e., no or 
de minimis emissions increase, see 40 CFR 93.153(c)(2)).
    Comment: Industry commenters asserted that the EPA should preserve 
maximum flexibility for federal agencies to determine that their 
actions conform and take steps to streamline conformity demonstrations, 
such as including a statement that implementation of this FIP satisfies 
federal agency general conformity obligations or a clarification that 
all legal options for demonstrating conformity are available, including 
those listed at 40 CFR 93.153(f), 93.158(a)(1), 93.158(a)(5)(i)(A), 
93.158(a)(5)(i)(B), and 40 CFR 93.158(a)(5)(iv). One commenter asserted 
that the EPA should clarify that the FIP is not a ``relevant'' 
implementation plan within the meaning of 40 CFR 93.158(a)(5)(iv) and 
that approval of the final FIP will not limit federal agencies' ability 
to rely on 40 CFR 93.158(a)(5)(iv) when demonstrating conformity.
    Response: We disagree with these comments. We concluded that this 
FIP is exempt from the general conformity requirements in 40 CFR part 
93, subpart B (see 40 CFR 93.153(c)(2)). As such, the FIP does not 
otherwise address general conformity or the responsibilities for the 
EPA or other federal agencies and federal agencies authorizing new 
emissions of NOX and VOC that are from sources not covered 
by this FIP must conduct an applicability analysis, and must, if 
project emissions are above the applicable de minimis thresholds, make 
a conformity determination in accordance with 40 CFR part 93, subpart 
B. This review would also consider whether any activities are on a 
federal agency's Presumed to Conform List (PTC). (Individual federal 
agencies can develop their own list of activities that are presumed to 
conform (40 CFR 93.153(f) through (j)); to date, however, neither the 
Ute Indian Tribe, BLM, the EPA, nor the state of Utah have developed a 
PTC list for the Uinta Basin ozone nonattainment area.) Federal 
agencies needing to make a general conformity determination have an 
option available for the Indian country lands within the U&O 
Reservation: Demonstrate that the emissions from the federal action are 
fully offset within the nonattainment area through a revision to the 
applicable SIP (or TIP or FIP) or an equally enforceable measure that 
effects emissions reductions equal to or greater than the total of 
direct and indirect emissions from the action so that there is no net 
increase in emissions of that pollutant. 40 CFR 93.158(a)(5)(iii).
    Comment: Environmental organization commenters asserted that the 
EPA is required to directly address the ways in which this FIP will 
have environmental justice implications and ensure that any final 
action puts into practice environmental justice principles. The 
commenters claimed that the EPA's environmental justice analysis for 
the proposed FIP was insufficient in focusing only on demographic 
information and concluding that the impacts would be positive for all 
populations and failing to address whether the FIP will sufficiently 
ameliorate the disproportionate public health impacts caused by high 
ozone levels in the region.
    Response: We agree that environmental justice implications are 
required to be evaluated for any final U&O FIP action to improve the 
degraded air quality in the Basin--the primary purpose for this 
rulemaking. We expect this rulemaking to result in reductions of 23,000 
tpy of VOC ozone precursor emissions on the Indian country lands within 
the U&O Reservation and subsequent reductions in ground level ozone 
formation in the Basin, which will reduce the adverse health impacts 
caused by ozone for any population residing in the Basin, on and off 
the Indian country lands within the U&O Reservation. We acknowledged in 
the proposal that this FIP is an important initial step in bringing the 
area back into attainment with the ozone NAAQS, but it is not expected 
to meet the requirements of an attainment FIP that we may prepare per 
the CAA if the area is bumped up to a Moderate nonattainment 
classification or higher in the future. We anticipate that the effects 
of this rulemaking will help demonstrate compliance in such future 
actions, while allowing more time to improve our understanding of 
emissions and our ability to model the full suite of actions necessary 
to achieve NAAQS attainment. We made improvements in the environmental 
justice analysis, contained in the RIA for this final rule, compared to 
that for the proposed FIP, including incorporating data on potential 
existing disproportionate impacts related to environmental burden, 
socio-economic vulnerability, and health. Evaluation of the additional 
data did not result in finalizing a substantially different rule than 
was proposed and follows existing EPA guidance \134\ on environmental 
justice in rulemaking per the directives to federal agencies in the 
February 11, 1994, Presidential E.O. 12898 \135\ and the January 20, 
2021, Presidential E.O. 13985.\136\
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    \134\ According to the EPA's June 2016 Technical Guidance for 
Assessing Environmental Justice in Regulatory Analysis, page 66 and 
Section 2.1, the term ``disproportionate impacts'' refers to 
differences in impacts or risks that are extensive enough that they 
may merit Agency action. The determination of whether there is a 
disproportionate impact that may merit Agency action is a policy 
judgment informed by analysis of any discernable differences in 
anticipated impacts from the rulemaking on population groups of 
concern compared to all other population groups.
    \135\ E.O. 12898, Federal Actions to Address Environmental 
Justice in Minority Populations and Low-Income Populations, Feb. 11, 
1994.
    \136\ EPA expressed a commitment to conducting environmental 
justice analysis for rulemakings based on a framework described in 
the final revisions to the Cross-State Air Pollution Rule (86 FR 
23054, 23162, Apr. 30, 2021). And E.O. 13895, Advancing Racial 
Equity and Support for Underserved Communities Through the Federal 
Government, Jan. 20, 2021.
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VII. Impacts of This Final FIP

A. Air Emissions Impacts

    The EPA projects that from 2023 to 2032, relative to the baseline, 
the final rule will result in about 23,000 tons of VOC emissions 
reductions, 59,000 tons of methane emissions reductions, and 3,100 tons 
of HAP emission reductions from affected oil and natural gas sources 
annually. We have estimated regulatory impacts beginning in 2023 as it 
is the first full year of implementation of this rule and have 
estimated impacts through 2032 to illustrate the accumulating effects 
of this rule over a longer period. The EPA did not estimate impacts 
after 2032 for reasons including limited information, as explained in 
the RIA.

B. Energy Impacts

    There will likely be minimal change in emissions control energy 
requirements resulting from this rule. Additionally, this final action 
encourages the use of emission controls that recover hydrocarbon 
products that can be used on-site as fuel or reprocessed within the 
production process for sale. The energy impacts described in this 
section are those energy requirements associated with the operation of 
emission control devices.

[[Page 75371]]

Potential impacts on the national energy economy of the rule are 
discussed in the economic impacts section.

C. Compliance Costs

    The EPA estimates the total capital cost of the final FIP to be 
$280 million for affected sources. We looked at the effect of recovered 
methane as a cost saving measure. The value of recovered methane 
amounted to $2.1 million per year. The net PV of the regulatory 
compliance costs associated with this final rule over the 2023 to 2032 
period when accounting for additional revenue from product recovery was 
estimated to be $560 million (in 2016 dollars) using a 7 percent 
discount rate and $610 million using a 3 percent discount rate. The net 
EAV of these costs when accounting for additional revenue from product 
recovery is estimated to be $81 million per year using a 7 percent 
discount rate and $72 million using a 3 percent discount rate.

D. Economic and Employment Impacts

    Executive Order 13563 directs Federal agencies to consider the 
effect of regulation on job creation and employment. According to the 
Executive order, ``our regulatory system must protect public health, 
welfare, safety, and our environment while promoting economic growth, 
innovation, competitiveness, and job creation. It must be based on the 
best available science.'' (Executive Order 13563, 2011). While a 
standalone analysis of employment impacts is not included in a standard 
benefit-cost analysis, such an analysis is of concern in the current 
economic climate given continued interest in the employment impact of 
regulations such as this final rule.
    With respect to energy markets, the EPA has concluded that, while 
this action may affect the supply, distribution or use of energy, it is 
not likely to have significant energy market effects. For small 
entities, we conducted a screening analysis. Based on the results of 
this screening analysis, which is presented in the RIA for the final 
FIP, the EPA concluded that that the rule will not have a Significant 
Impact on a Substantial Number of Small Entities (SISNOSE). For 
employment impacts, we did not perform a quantitative analysis on all 
categories of employment changes as a result of the rule. This rule is 
expected to result in little change in oil and natural gas exploration 
and production and is not expected to result in significant changes to 
employment dedicated to these tasks. The EPA did, however, in its cost 
analysis for the rule, estimate changes in labor due to compliance 
activities. As presented in the RIA for this action, the EPA projected 
there will be increases in the labor required for compliance-related 
activities associated with this final rule. As the rule imposes VOC 
emission control requirements that are consistent with federal 
standards for the oil and natural gas industry that apply nation-wide 
or rules for similar sources that apply in areas of the Basin where the 
EPA has approved the UDEQ to implement the CAA, we expect that many 
operators of affected oil and natural gas sources may already have 
sufficient systems established for complying with the federal standards 
for other sources they operate in the Basin, and therefore labor 
impacts may be overstated in our estimates.

E. Benefits

    The EPA expects climate and health benefits due to the VOC 
emissions reductions projected under this final rule, as well as 
climate benefits from methane emissions reductions. Climate benefits 
from reducing emissions of CH4 can be estimated and 
monetized using interim estimates of the social cost of methane (SC-
CH4). The SC-CH4 estimates used here are the SC-
CH4 estimates presented in the Technical Support Document: 
Social Cost of Carbon, Methane, and Nitrous Oxide Interim Estimates 
under Executive Order 13990 (IWG 2021) (hereafter, ``February 2021 
TSD''). EPA has evaluated the SC-CH4 estimates in the 
February 2021 TSD and has determined that these estimates are 
appropriate for use in estimating the social benefits of CH4 
emission reductions expected to result from this final rule. These SC-
CH4 estimates are interim values developed for use in 
benefit-cost analyses until updated estimates of the impacts of climate 
change can be developed based on the best available science and 
economics. EPA and other agencies intend to undertake a fuller update 
of the SC-GHG estimates that takes into consideration the advice of the 
National Academies and other recent scientific literature.
    We note that the methodology underlying the SC-CH4 estimates used 
in this RIA been subject to public comment in the context of dozens of 
proposed rulemakings as well as in a dedicated public comment period in 
2013. Further, the monetized climate benefits presented in this 
analysis are not a part of the technical or legal basis of the proposed 
action for which the RIA was prepared. Rather, the monetized benefits 
associated with projected reductions in greenhouse gas emissions that 
may result from the final rule are presented solely for purposes of 
compliance with E.O. 12866 and to present the public with information 
regarding the full scope of potential benefits of the final rule. We 
note that there is an ongoing interagency process to update the SC-GHG 
estimates, including the SC-CH4 estimates used in this analysis, and 
there will be further opportunity to provide public input on the SC-GHG 
methodology through that process.\137\ The RIA for the final FIP 
provides a more detailed discussion of the approach to estimating 
climate benefits from reducing methane as a benefit to reducing VOC.
---------------------------------------------------------------------------

    \137\ For example, EPA, on behalf of the IWG, published a 
Federal Register document on January 25, 2022, to solicit public 
nominations of scientific experts for the upcoming peer review the 
forthcoming update. See https://www.federalregister.gov/documents/2022/01/25/2022-01387/request-for-nominations-of-experts-for-the-review-of-technical-support-document-for-the-social-cost. EPA has a 
web page where additional information regarding the peer review 
process will be posted as it becomes available: https://www.epa.gov/environmental-economics/scghg-tsd-peer-review. There will be a 
separate Federal Register document for the public comment period on 
the forthcoming SC-GHG technical support document once it is 
released.
---------------------------------------------------------------------------

    The EPA estimated the PV of monetized climate benefits over the 
2023 to 2032 period to be $1 billion using a 3 percent discount rate 
and estimated the PV of monetized net benefits to be $390 million using 
a 3 percent discount rate and $440 million using a 7 percent discount 
rate for costs and a 3 percent discount rate for benefits. We estimate 
the EAV of monetized climate benefits over the 2023 to 2032 period to 
be $120 million using a 3 percent discount rate. We estimated the EAV 
of net benefits to be $48 million using a 3 percent discount rate for 
both benefits and costs. We estimated the EAV of net benefits to be $39 
million using a 3 percent discount rate for benefits and a 7 percent 
discount rate for costs.\138\ These values do not account for health 
effects of ozone exposure from the decrease in methane emissions. Under 
the final rule, the EPA expects that VOC emissions reductions will 
improve air quality and are likely to result in health and welfare 
benefits associated with reduced exposure to ozone, PM2.5, 
and HAP, but we did not quantify these effects at this time due to the 
data limitations described below. This omission should not imply that 
these benefits may not exist; rather, it reflects

[[Page 75372]]

the inherent difficulties in accurately modeling the direct and 
indirect impacts of the projected VOC emissions reductions for the oil 
and natural gas industry in the Uinta Basin. To the extent that the EPA 
were to quantify these ozone and PM impacts, it would estimate the 
number and value of avoided premature deaths and illnesses using an 
approach detailed in the Particulate Matter NAAQS and Ozone NAAQS 
RIAs.\139\ This approach relies on full-form air quality modeling for 
the oil and natural gas source category that would be suitable for use 
in regulatory analysis in the context of NSPS, including ways to 
address the uncertainties regarding the scope and magnitude of VOC 
emissions.
---------------------------------------------------------------------------

    \138\ As explained in the RIA, For the presentational purposes, 
we discuss the benefits associated with the average SC-
CH4 at a 3 percent discount rate, but the Agency does not 
have a single central SC-CH4 point estimate. The EAV of 
benefits at a 3 percent discount rate is used to estimate the net 
benefits at a 7 percent discount rate for costs.
    \139\ U.S. EPA. December 2012. ``Regulatory Impact Analysis for 
the Final Revisions to the National Ambient Air Quality Standards 
for Particulate Matter.'' EPA-452/R-12-005. Office of Air Quality 
Planning and Standards, Health and Environmental Impacts Division, 
available in the docket for this rulemaking (Docket ID No. EPA-R08-
OAR-2015-0709).
    U.S. EPA. September 2015. ``Regulatory Impact Analysis of the 
Final Revisions to the National Ambient Air Quality Standards for 
Ground-Level Ozone.'' EPA-452/R-15-007. Office of Air Quality 
Planning and Standards, Health and Environmental Impacts Division, 
available in the docket for this rulemaking (Docket ID No. EPA-R08-
OAR-2015-0709).
---------------------------------------------------------------------------

    When quantifying the incidence and economic value of human health 
impacts of air quality changes, the Agency sometimes relies upon 
alternative approaches to using full-form air quality modeling, called 
reduced-form techniques, often reported as ``benefit-per-ton'' values 
that relate air pollution impacts to changes in air pollutant precursor 
emissions.\140\ Several studies have discussed the air quality and 
health impacts from the oil and natural gas industry.\141\ The Agency 
believes more work needs to be done to vet the analysis and 
methodologies for all potential approaches to valuing the health 
effects of VOC emissions changes in areas experiencing elevated winter 
ozone before they are used in regulatory analysis, but is committed to 
continuing this work. Recently, the EPA systematically compared the 
changes in benefits, and concentrations where available, from its 
benefit-per-ton technique and other reduced-form techniques to the 
changes in benefits and concentrations derived from full-form 
photochemical model representation of a few different specific 
emissions scenarios.\142\ The Agency's goal was to create a methodology 
by which investigators could better understand the suitability of 
alternative reduced-form air quality modeling techniques for estimating 
the health impacts of criteria pollutant emissions changes in the EPA's 
benefit-cost analysis, including the extent to which reduced form 
models may over-or-under-estimate benefits (compared to full-scale 
modeling) under different scenarios and air quality concentrations. The 
EPA Science Advisory Board (SAB) recently convened a panel to review 
this report.\143\ In particular, the SAB will assess the techniques the 
Agency used to appraise these tools; the Agency's approach for 
depicting the results of reduced-form tools; and steps the Agency might 
take for improving the reliability of reduced-form techniques for use 
in future RIAs.
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    \140\ U.S. EPA. 2018. ``Technical Support Document: Estimating 
the Benefit per Ton of Reducing PM2.5 Precursors from 17 
Sectors.'' February, available in the docket for this rulemaking 
(Docket ID No. EPA-R08-OAR-2015-0709).
    \141\ Fann, N., K.R. Baker, E.A.W. Chan, A. Eyth, A. Macpherson, 
E. Miller, and J. Snyder. 2018. ``Assessing Human Health 
PM2.5 and Ozone Impacts from U.S. Oil and Natural Gas 
Sector Emissions in 2025.'' Environmental Science and Technology 
52(15):8095-8103.
    Litovitz, A., A. Curtright, S. Abramzon, N. Burger, and C. 
Samaras. 2013. ``Estimation of Regional Air-Quality Damages from 
Marcellus Shale Natural Gas Extraction in Pennsylvania.'' 
Environmental Research Letters 8(1), 014017.
    Loomis, J. and M. Haefele. 2017. ``Quantifying Market and Non-
market Benefits and Costs of Hydraulic Fracturing in the United 
States: A Summary of the Literature.'' Ecological Economics 138:160-
167.
    \142\ This analysis compared the benefits estimated using full-
form photochemical air quality modeling simulations (CMAQ and CAMx) 
against four reduced-form tools: InMAP, AP2/3 EASIUR, and the EPA's 
benefit-per-ton.
    \143\ 85 FR 23823 (Apr. 29, 2020).
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VIII. Statutory and Executive Order Reviews

A. Executive Order 12866: Regulatory Planning and Review and Executive 
Order 13563: Improving Regulation and Regulatory Review

    This action is an economically significant regulatory action that 
was submitted to the Office of Management and Budget (OMB) for review. 
Any changes made in response to OMB recommendations have been 
documented in the docket. The EPA prepared an analysis of the potential 
costs and benefits associated with this action. This analysis, 
``Regulatory Impact Analysis of the Final Federal Implementation Plan 
for Managing Emissions from Oil and Natural Gas Sources on Indian 
Country Lands Within the Uintah and Ouray Indian Reservation in Utah'' 
(Ref. EPA-908/Z-16-001), is available in the docket, and is summarized 
in Section VII. Impacts of this Final FIP.

B. Paperwork Reduction Act (PRA)

    The information collection activities in this rule will be 
submitted for approval to the Office of Management and Budget (OMB) 
under the PRA. The Information Collection Request (ICR) document that 
the EPA prepared has been assigned EPA ICR number 2539.02. You can find 
a copy of the ICR in the docket for this rule, and it is briefly 
summarized here. The information collection requirements are not 
enforceable until OMB approves them.
    This final action imposes a new information collection burden under 
the PRA. The ICR covers information collection necessary to meet the 
requirements in this U&O FIP. In general, owners or operators are 
required to maintain records of required monitoring and other rule 
compliance. This U&O FIP also requires annual reports containing 
information for each oil and natural gas source, including a summary of 
certain required records during the reporting period, and a summary of 
certain instances where operation was not performed in compliance with 
the requirements of this U&O FIP during the reporting period. 
Additionally, a summary emissions inventory is required for each source 
covered under this rulemaking once every three years. These reports and 
records are essential in determining compliance and are required of all 
sources subject to this U&O FIP. The information collected will be used 
by the EPA or the Ute Indian Tribe to determine the compliance status 
of sources subject to the rule.
    The EPA received one comment letter specifically on the ICR for the 
proposed U&O FIP, as well as several other comments related to the 
monitoring, recordkeeping, and reporting in the proposed rule. The EPA 
responded to these comments, as summarized in Sections VI.E and F. of 
this preamble and in the response to comments document in the docket 
for this rulemaking.\144\
---------------------------------------------------------------------------

    \144\ Response to Public Comments, Proposed Federal 
Implementation Plan: Managing Emissions from Oil and Natural Gas 
Sources on Indian Country Lands within the Uintah and Ouray Indian 
Reservation in Utah, April 2022, available in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

    Respondents/affected entities: The potential respondents are owners 
or operators of existing, new, and modified oil and natural gas sources 
on Indian country lands within the U&O Reservation.
    Respondent's obligation to respond: Mandatory. The EPA is charged 
under sections 301(a) and 301(d)(4) of the CAA to promulgate 
regulations as necessary

[[Page 75373]]

to protect tribal air resources. Promulgating this U&O FIP will address 
winter ozone air quality concentrations that exceed the NAAQS, and 
given the 2015 ozone NAAQS marginal nonattainment designation, when 
combined with the National O&NG FIP amendments, would provide 
justification to allow continued streamlined construction authorization 
of new or modified true minor oil and natural gas sources, all in a 
manner that seeks to provide regulatory consistency between state and 
federal requirements with regard to controlling VOC emissions from 
existing, new, and modified oil and natural gas operations on the 
Indian country lands within the U&O Reservation. There is no other 
federal rule, including the recently finalized NSPS and NESHAP for the 
Oil and Natural Gas Sector (NSPS OOOO, NSPS OOOOa, and NESHAP HH), that 
establishes air pollution control regulations for the particular oil 
and natural gas operations that exist on the Indian country lands 
within the U&O Reservation that are appropriate to address the issues 
identified for this area. This is in contrast to oil and natural gas 
operations in areas where the EPA has approved the UDEQ to implement 
the CAA, which are governed by the UDEQ regulations and Utah Division 
of Oil, Gas, and Mining regulations. Consistent with the regulatory 
structure that exists in those areas, this U&O FIP has requirements for 
VOC emissions control and reductions, monitoring, recordkeeping, and 
reporting.
    In addition, section 114(a) states that the Administrator may 
require any owner or operator subject to any requirement of this Act 
to:
     Establish and maintain such records;
     Make such reports;
     Install, use, and maintain such monitoring equipment, and 
use such audit procedures, or methods;
     Sample such emissions (in accordance with such procedures 
or methods, at such locations, at such intervals, during such periods, 
and in such manner as the Administrator shall prescribe);
     Keep records on control equipment parameters, production 
variables or other indirect data when direct monitoring of emissions is 
impractical;
     Submit compliance certifications in accordance with 
section 114(a)(3); and
     Provide such other information as the Administrator may 
reasonably require.
    Estimated number of respondents: We estimate that an average of 
6,870 oil and natural gas sources will be subject to one or more 
requirements in this U&O FIP over the next three years (including the 
requirement to report triennial emissions inventories as one 
requirement).
    Frequency of response: Annual reports are required. Respondents 
must monitor all specified criteria at each affected source and 
maintain these records for five years.
    Total estimated burden: 154,630 hours per year (3-year average), 
for all operators subject to this U&O FIP.
    Total estimated cost: $26.2 million per year (3-year average); 
includes labor cost of $9.6 million, annualized capital cost of $10.4 
million, and $6.1 million in operation and maintenance costs for all of 
the operators that would subject to this U&O FIP.
    An agency may not conduct or sponsor, and a person is not required 
to respond to, a collection of information unless it displays a 
currently valid OMB control number. The OMB control numbers for the 
EPA's regulations in 40 CFR are listed in 40 CFR part 9. When OMB 
approves this ICR, the Agency will announce that approval in the 
Federal Register and publish a technical amendment to 40 CFR part 9 to 
display the OMB control number for the approved information collection 
activities contained in this final rule.

C. Regulatory Flexibility Act (RFA)

    I certify that this action will not have a significant economic 
impact on a substantial number of small entities under the RFA. The 
small entities subject to the requirements of this action are owners/
operators of oil and natural gas sources on the Indian country lands 
within the U&O Reservation. They were identified through a screening 
analysis of existing oil and natural gas sources and emissions 
submitted by owners/operators on the Indian country lands within the 
U&O Reservation under UBEI2017-Update. The Agency has determined that 
only two out of 14 total small entities, or 14 percent, may experience 
an annualized cost impact of 1 percent to 3 percent of annual revenues, 
and thus may potentially incur significant economic impact. It was 
determined that the other 12 small entities would incur annualized 
costs less than 1 percent of annual sales, and therefore, are not 
expected to incur significant economic impacts from this rule. Details 
of this analysis are presented in the RIA and can be viewed in the 
docket for this rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).

D. Unfunded Mandates Reform Act (UMRA)

    This final action does not contain an unfunded mandate of $100 
million of more as described in UMRA, 2 U.S.C. 1531-1538, and does not 
significantly or uniquely affect small governments. This action imposes 
no enforceable duty on any state, local or tribal governments or the 
private sector.
1. Statutory Authority
    The legal authority for this rule stems from sections 301(a) and 
301(d)(4) of the CAA and 40 CFR 49.11(a). See section III.B of this 
preamble for more information.
2. Costs and Benefits
    As discussed in Section VII. Impacts of this Final FIP, the 
estimated equivalent annualized costs of this rule in 2023, accounting 
for additional revenue from recovered natural gas, are $81 million in 
2016 dollars using a 7 percent discount rate and $72 million in 2016 
dollars using a 3 percent discount rate.\145\ EPA estimates that the 
rule will lead to equivalent annual monetized benefits of about $120 
million using a 3 percent discount rate. The quantified equivalent 
annualized net benefits of the regulation (the difference between the 
equivalent annualized monetized benefits and net equivalent annualized 
compliance costs) are estimated to be $39 million in 2016 dollars using 
a 7 percent discount rate and $48 million using a 3 percent discount 
rate.\146\ More in-depth information on costs and benefits of the final 
regulation can be found in the RIA, including certain climate benefits 
and other benefits that were not quantified or monetized.\147\
---------------------------------------------------------------------------

    \145\ The recordkeeping and reporting costs calculated for the 
ICR analysis, discussed earlier, are imbedded in the total 
annualized engineering costs included here.
    \146\ Benefits (methane reductions) were only calculated at a 3 
percent discount rate, as that is the only rate that both cost and 
benefit analyses have in common. Therefore, the net benefits for the 
7 percent discount rate were compared to benefits at a 3 percent 
discount rate to calculate the annualized net benefits of the final 
rule. The RIA in the docket for this rulemaking discusses this 
calculation in detail.
    \147\ The RIA includes a more detailed discussion of the 
potential costs and benefits associated with this rule. It can be 
viewed in the docket for this rulemaking (Docket ID No. EPA-R08-OAR-
2015-0709).
---------------------------------------------------------------------------

3. Effects on National Economy
    The EPA estimated the labor impacts due to compliance with the 
final rule for affected entities within the oil and natural gas 
industry, including the installation, operation, and maintenance of 
control equipment and control activities, as well as the labor 
associated

[[Page 75374]]

with new reporting and recordkeeping requirements. We did not estimate 
any potential changes in labor outside of the affected industry, and 
due to data and methodology limitations we did not estimate net 
employment impacts for the affected industry, apart from the partial 
estimate of the labor requirements related to control strategies. The 
labor requirements analysis used a bottom-up engineering-based 
methodology to estimate employment impacts. The engineering cost 
analysis of the RIA includes estimates of the labor requirement costs 
associated with implementing the regulations. Each of these labor 
changes may be required as part of an initial effort to comply with the 
new regulation.
4. Regulatory Alternatives
    Alternate regulatory options examined in the RIA include a low-
impact option (Option 1) and a high-impact option (Option 3). Option 1 
would not include control of emissions from glycol dehydrators. This is 
in contrast to preferred Option 2, which requires control of emissions 
from glycol dehydrators where the source-wide VOC emissions from the 
collection of all storage vessels, glycol dehydrators and pneumatic 
pumps is equal to or greater than 4 tpy per 40 CFR 49.4173 through 
49.4177. The EPA could have considered a range of even less stringent 
regulatory options than Option 1 to evaluate and propose, including an 
option that would not require retrofit of existing storage vessels with 
controls or require controls less broadly. Retrofitting existing 
storage vessels with controls is one of the higher costs evaluated in 
this rulemaking. Such an option, however, would lead to even greater 
disparity with the requirements for similar sources in in areas of the 
Basin where the EPA has approved the UDEQ to implement the CAA than 
Option 1. Option 3 (high impact) would require implementation of an 
LDAR program at all existing oil and natural gas sources, regardless of 
daily production, or storage vessel, dehydrator, and pneumatic pump 
annual VOC emissions. We sought comment on the proposed FIP for whether 
it was appropriate to consider less or more stringent regulatory 
options, for example, an option that does not include retrofitting 
existing storage vessels for controls. We acknowledged that if comments 
supported finalizing less or more stringent regulatory options as 
viable and if the agency decided to adopt an option that was not 
offered in the proposal, the EPA may be required to hold an additional 
public comment period on this rulemaking. We did receive comments 
asserting both that less stringent and more stringent options were 
appropriate for this rulemaking. We summarized our responses to 
comments related to the regulatory options evaluated in the response to 
comments document in the docket for this rulemaking.\148\
---------------------------------------------------------------------------

    \148\ Response to Public Comments, Proposed Federal 
Implementation Plan: Managing Emissions from Oil and Natural Gas 
Sources on Indian Country Lands within the Uintah and Ouray Indian 
Reservation in Utah, March 2022, available in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

    The EPA estimates the equivalent annualized costs of the preferred 
option in 2023 in 2016 dollars using a 7 percent discount rate when 
accounting for additional revenue from product recovery are $81 million 
($3,500 per ton of VOC reduced). When using a 3 percent discount rate, 
the estimates of total equivalent annualized costs of the final FIP 
when accounting for additional revenue from product recovery are $72 
million when accounting for additional revenue from product recovery 
($3,200 per ton of VOC reduced).
    The equivalent annualized costs of the less stringent option 
(Option 1) when accounting for additional revenue from product recovery 
would be $77 million in 2023 in 2016 dollars using a 7 percent discount 
rate, resulting in a cost of control of $4,100 per ton of the estimated 
19,000 tons of VOC reduced, and $69 million in 2023 using a 3 percent 
discount rate, resulting in a cost of control of $3,600 per ton of VOC 
reduced. Option 1 was analyzed to reduce burden on small entities, 
while still achieving meaningful VOC emissions reductions. Although 
this option would cost less overall than preferred Option 2, it would 
achieve less benefits in the form of VOC emissions reductions (19,000 
tons versus 23,000 tons for final Option 2), as emissions from glycol 
dehydrators would not be controlled and a smaller number of oil and 
natural gas sources would be required to control storage vessels and 
pneumatic pumps, because a larger amount of VOC emissions would be 
required from the collection of all storage vessels and pneumatic pumps 
at sources that also have glycol dehydrators in order to trigger the 
control applicability threshold than under Option 2.\149\ Additionally, 
by not controlling glycol dehydrator emissions in Option 1, there would 
also be significantly less benefits from the associated reductions in 
HAP emissions that are more reactive in forming ozone than the lighter-
end VOC emissions resulting from storage vessels, pneumatic pumps and 
fugitive emissions. Implementation of Option 1 would also result in 
regulatory requirements that are inconsistent with the requirements for 
equivalent sources in areas of the Basin where the EPA has approved the 
UDEQ to implement the CAA, thus not meeting our goal of regulatory 
consistency across the Uinta Basin.
---------------------------------------------------------------------------

    \149\ Under Option 1, the EPA would determine the 4 tpy 
threshold triggering control with source-wide potential VOC 
emissions from the collection of all storage vessels and pneumatic 
pumps only.
---------------------------------------------------------------------------

    The equivalent annualized costs of the most stringent option 
(Option 3) when accounting for additional revenue from product recovery 
would be $88 million in 2023 in 2016 dollars using a 7 percent discount 
rate, resulting in a cost of control of $3,500 per ton of the estimated 
25,000 tons of VOC reduced, and $79 million in 2023 using a 3 percent 
discount rate, resulting in a cost of control of $3,100 per ton of VOC 
reduced. Option 3 was analyzed to achieve a greater level of VOC 
emissions reductions. Although this option would achieve about 3,000 
more tons of VOC emissions reductions than preferred Option 2 (25,000 
tons versus 23,000 tons for final Option 2), it would also result in 
increased costs (though the cost of control per ton of VOC reduced 
would be about the same as Option 2). Additionally, Option 3 would 
result in regulatory requirements that are inconsistent with the 
requirements for equivalent sources in areas of the Basin where the EPA 
has approved the UDEQ to implement the CAA, thus not meeting our goal 
of regulatory consistency across the Uinta Basin.
    For a more in-depth analysis of these options, see the RIA for this 
final U&O FIP.

E. Executive Order 13132: Federalism

    This final action does not have federalism implications. It will 
not have substantial direct effects on the states, on the relationship 
between the national government and the states, or on the distribution 
of power and responsibilities among the various levels of government.

F. Executive Order 13175: Consultation and Coordination With Indian 
Tribal Governments

    This final action has tribal implications, because it establishes 
rules affecting a substantial number of industrial operations in Indian 
country within the U&O Reservation. The emissions improvement measures 
required by this rule will benefit the health and welfare of members of 
the Tribe. In addition, some of these

[[Page 75375]]

operations provide revenue to the Ute Indian Tribe, directly or 
indirectly. For example, the Tribe benefits from royalties paid by 
companies developing oil and natural gas resources on the Indian 
country lands within the U&O Reservation, which are administered by the 
U.S. Bureau of Indian Affairs. However, this rule will neither impose 
substantial direct compliance costs on federally recognized tribal 
governments, nor preempt tribal law.
    The EPA consulted with tribal officials under the EPA Policy on 
Consultation and Coordination with Indian Tribes early in the process 
of developing this regulation to permit them to have meaningful and 
timely input on its development. A summary of that consultation and 
other communications with the Ute Indian Tribe follows. The EPA has 
conducted outreach on this final rule consistent with the EPA Policy on 
Consultation and Coordination with Indian Tribes (May 4, 2011) via 
ongoing monthly meetings with tribal environmental professionals \150\ 
before and during the development of this final action, and further as 
follows: (1) via formal Tribal consultation and informal informational 
meetings with the Ute Indian Tribe Business Committee regarding options 
that the EPA could consider to address the Uinta Basin air quality 
concerns; (2) via stakeholder meetings where the Tribe was included and 
participated in emissions contributions discussions specific to the 
EPA's strategy for addressing the Uinta Basin air quality concerns; and 
(3) via ongoing stakeholder working group meetings convened by the Ute 
Indian Tribe Business Committee where the EPA participated in 
discussions with the Tribe and industrial operators on strategies to 
reduce existing ozone-related emissions and provide a streamlined 
construction authorization mechanism for new and modified minor oil and 
natural gas sources given the recent nonattainment designation for the 
2015 ozone NAAQS.
---------------------------------------------------------------------------

    \150\ These monthly meetings are general in nature, dealing with 
many air-related topics, and are not specific to this proposed U&O 
FIP.
---------------------------------------------------------------------------

    The EPA held consultations with elected officials of the Ute Indian 
Tribe Business Committee on the following dates: July 22, 2015; 
December 17, 2016; November 13, 2017; March 22, 2018, August 17, 2018; 
November 14, 2018; February 28, 2019; April 2, 2019; February 5, 2020; 
and August 2, 2022. The EPA has also participated in tribally convened 
stakeholder meetings on March 22, 2017, and June 1-2, 2017, as well as 
many informal informational meetings with tribal elected officials and 
air quality staff.\151\
---------------------------------------------------------------------------

    \151\ The records of communication for all formal consultations 
and other discussions with the Ute Indian Tribe are included in the 
docket for this rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

    During the consultations and other discussions on this U&O FIP, the 
Tribe expressed concerns regarding their economic needs to develop and 
generate revenue from Tribal oil and natural gas resources; to consider 
air quality effects on the health, safety, and welfare concerns of 
their tribal membership living within the exterior boundaries of the 
U&O Reservation and the Uinta Basin; and to reconcile regulatory 
requirements for an even economic and regulatory playing field. We 
addressed questions the Tribe had regarding the controls being 
considered, the ability for owners or operators to take credit for the 
controls for purposes such as permitting and NAAQS attainment, the 
estimated costs of proposed controls, the characterization of Indian 
country, and the breadth of oil and natural gas source category types 
proposed to be regulated. The Ute-Tribe-convened stakeholder meetings 
involved discussions on appropriate ways to expedite nonattainment 
permitting for new and modified minor oil and natural gas sources on 
the Indian country lands within the U&O Reservation. Ute Indian Tribe 
and industry participants recognized that existing source emissions 
reductions would likely be necessary in order for the EPA to 
demonstrate that construction authorization for new and modified 
sources would not cause or contribute to NAAQS violations in the 
nonattainment area.
    Enacting a FIP for Indian country lands within the U&O Reservation 
is directly responsive to the Ute Indian Tribe's air quality concerns 
in that we are implementing our CAA authority to protect air quality on 
and surrounding Indian country lands within the U&O Reservation in a 
manner that provides regulatory consistency with respect to 
requirements for oil and natural gas sources in areas of the Basin 
where the EPA has approved the UDEQ to implement the CAA. We are 
committed to supporting tribes' right to self-governance and to 
protecting their inherent sovereignty. Throughout development of this 
final action, we continued to provide outreach to tribal environmental 
professionals and continued consultation with tribal leadership.
    As required by section 7(a), the EPA's Tribal Consultation Official 
has certified that the requirements of the executive order have been 
met in a meaningful and timely manner. A copy of the certification is 
included in the docket for this action.

G. Executive Order 13045: Protection of Children From Environmental 
Health Risks and Safety Risks

    This action is subject to Executive Order 13045 because it is an 
economically significant regulatory action as defined by Executive 
Order 12866 and the EPA has concluded that the environmental health or 
safety risk addressed by this final action has a disproportionate 
effect on children. Accordingly, we have evaluated the environmental 
health or safety effects of exposure to elevated ozone concentrations 
on children. This action's health and risk assessments are contained in 
the Impacts of this Final FIP and Executive Order 12898: Federal 
Actions to Address Environmental Justice in Minority Populations and 
Low-Income Populations sections in this preamble (sections VII. and 
VIII.K., respectively), with more detailed information contained in the 
RIA for this rulemaking.\152\ This final U&O FIP should have a positive 
effect on the health of the residents of the Indian country lands 
within the U&O Reservation, including children, as it is expected to 
result in a reduction in ambient ozone concentrations, which 
disproportionately impact children, elderly, and those with respiratory 
ailments.
---------------------------------------------------------------------------

    \152\ The RIA includes more detailed discussions of the health 
and risk assessments for this rule and can be viewed in the docket 
for this rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

H. Executive Order 13211: Actions Concerning Regulations That 
Significantly Affect Energy Supply, Distribution, or Use

    This action is not a ``significant energy action'', because it is 
not likely to have a significant adverse effect on the supply, 
distribution, or use of energy. The basis for these determinations 
follows.
    The EPA prepared an analysis of the potential costs and benefits 
associated with this action, which is included in the RIA,\153\ and is 
summarized in Section VII. Impacts of this Final FIP. Based on this 
analysis, we have concluded that, while this action may have some 
effects on the supply, distribution, or use of energy, it is not likely 
to have significant adverse energy

[[Page 75376]]

effects. Most owners/operators of existing oil and natural gas 
production sources on Indian country lands within the U&O Reservation 
also operate sources on non-Indian country lands within and outside of 
the U&O Reservation, where they are already required to employ the 
emissions control technologies required by this U&O FIP. Additionally, 
we expect that these owners/operators will also operate new and 
modified sources in the Uinta Basin that are subject to similar NSPS 
OOOO and OOOOa, NESHAP HH, and other oil and natural gas source 
category-related control requirements within the Uinta Basin. 
Therefore, it is expected that the owners/operators will continue to 
procure necessary control equipment and supplies from the same 
suppliers they currently use for non-Indian country existing, new or 
modified sources. Further, only the higher-producing sources are 
expected to be subject to the more substantive emission control 
requirements in this U&O FIP, and those sources are more likely to be 
able to accommodate the additional costs, so it is not expected that 
the new requirements alone would factor significantly into decisions to 
slow or halt production and thereby cause a shortfall in supply. 
Rather, the prices of oil and natural gas are likely to be a more 
significant factor in decisions on reducing production from existing 
sources.\154\
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    \153\ The RIA includes a more detailed discussion of the 
potential costs and benefits associated with this rule. It can be 
viewed in the docket for this rulemaking (Docket ID No. EPA-R08-OAR-
2015-0709).
    \154\ The RIA includes more detailed information on oil and 
natural gas prices. It can be viewed in the docket for this 
rulemaking (Docket ID No. EPA-R08-OAR-2015-0709).
---------------------------------------------------------------------------

    Additionally, this U&O FIP establishes several emissions control 
standards that give regulated entities flexibility in determining how 
to best comply with the regulation. Even within the geographically and 
economically homogeneous affected area within the Uinta Basin, this 
flexibility is an important factor in reducing regulatory burden. For 
more information on the estimated energy effects of the rule, please 
see the RIA, which is in the docket for this rule.

I. National Technology Transfer and Advancement Act (NTTAA)

    Section 12(d) of the National Technology Transfer and Advancement 
Act of 1995 (NTTAA), 15 U.S.C. 272 note, directs the EPA to use 
voluntary consensus standards (VCS) in its regulatory activities unless 
to do so would be inconsistent with applicable law or otherwise 
impractical. VCS are technical standards, which include materials 
specifications, test methods, sampling protocols, business practices 
and management systems developed or adopted by voluntary consensus 
standards bodies (VCSB), both domestic and international. These bodies 
plan, develop, establish or coordinate voluntary consensus standards 
using agreed-upon procedures.
    This action involves technical standards. Therefore, the EPA 
conducted a search to identify potentially applicable VCS. However, the 
Agency identified no such standards and none were brought to its 
attention in comments. \155\ Therefore, the EPA has decided to use EPA 
Methods 21 and 22 of 40 CFR part 60, appendix A-7 and part 63, appendix 
A.\156\
---------------------------------------------------------------------------

    \155\ ``Voluntary Consensus Standard Results for Federal 
Implementation Plan for Managing Emissions from Oil and Natural Gas 
Sources on the Uintah and Ouray Indian Reservation in Utah,'' 
Memorandum from Steffan Johnson, Group Leader, U.S. EPA, Measurement 
Technology Group, to Deirdre Rothery, Unit Chief Air Permitting and 
Monitoring Unit, U.S. EPA Region 8 Air Program, dated Dec. 22, 2017, 
available in the Docket for this rulemaking (Docket ID No. EPA-R08-
OAR-2015-0709).
    \156\ The EPA Reference Methods 21 and 22 can be accessed at 
https://www.ecfr.gov/cgi-bin/ECFR?page=browse (Search Title 40, Part 
60 and Part 63), accessed Mar. 14, 2022.
---------------------------------------------------------------------------

J. Executive Order 12898: Federal Actions To Address Environmental 
Justice in Minority Populations and Low-Income Populations

    While the EPA finds that communities in the Uinta Basin with higher 
proportions of low-income populations and people of color rank in the 
90th percentile for ozone concentrations in the baseline based on 
EJSCREEN, the EPA concludes that this action does not have 
disproportionately high and adverse human health or environmental 
effects on minority populations, low-income populations, and/or 
indigenous peoples, as specified in Executive Order 12898.\157\
---------------------------------------------------------------------------

    \157\ See 59 FR 7629 (Feb. 16, 1994).
---------------------------------------------------------------------------

    The documentation for this decision is contained in the RIA \158\ 
for this final rule. Our objective in developing this rule is to 
improve air quality and thereby protect the communities in the Uinta 
Basin, including those in and near Indian country lands within the U&O 
Reservation, where existing oil and natural gas operations have been 
shown to contribute to exceedances of the ozone NAAQS. The impacts of 
this final rule are expected to be beneficial, rather than adverse, and 
its benefits are expected to accrue to communities in and near Indian 
country lands within the U&O Reservation. As explained in Section 
VII.A. of this preamble, the EPA has quantified the expected emissions 
impacts from this final action and found that the action will result in 
large reductions of VOC emissions.
---------------------------------------------------------------------------

    \158\ The RIA includes a more detailed discussion of the 
environmental justice analysis for this rule. It can be viewed in 
the docket for this rulemaking (Docket ID No. EPA-R08-OAR-2015-
0709).
---------------------------------------------------------------------------

    This final action will also provide regulatory certainty to owners/
operators, by imposing, to the extent appropriate, requirements that 
are the same as or consistent with those applicable to such existing 
sources that in areas of the Basin where the EPA has approved the UDEQ 
to implement the CAA because they are not on Indian country lands 
within the Reservation. This will ensure that economic impacts are 
consistent and air quality is protected consistently across the Uinta 
Basin. Our Environmental Justice (EJ) analysis that can be found in the 
RIA for this rulemaking supports the conclusion that this action is not 
expected to result in disproportionate impacts.

K. Congressional Review Act (CRA)

    This action is subject to the CRA, and the EPA will submit a rule 
report to each House of the Congress and to the Comptroller General of 
the United States. This action is a ``major rule'' as defined by 5 
U.S.C. 804(2).

List of Subjects in 40 CFR Part 49

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Indians, Indians-law, Indians-tribal government, 
Intergovernmental relations, Reporting and recordkeeping requirements.

Michael S. Regan,
Administrator.
    For reasons set forth in the preamble, part 49 of title 40 of the 
Code of Federal Regulations is amended as follows:

PART 49--INDIAN COUNTRY: AIR QUALITY PLANNING AND MANAGEMENT

0
1. The authority citation for part 49 continues to read as follows:

    Authority: 42 U.S.C. 7401, et seq.

0
2. Add the undesignated center heading ``Federal Implementation Plan 
for Managing Emissions from Oil and Natural Gas Sources on the Indian 
Country Lands Within the Uintah and Ouray Indian Reservation in Utah'' 
immediately following Sec.  49.4168 and add Sec. Sec.  49.4169 through 
49.4184 to subpart K to read as follows:

Subpart K-Implementation Plans for Tribes-Region VIII

* * * * *

[[Page 75377]]

Federal Implementation Plan for Managing Emissions From Oil and Natural 
Gas Sources on the Indian Country Lands Within the Uintah and Ouray 
Indian Reservation in Utah

Sec.
49.4169 Introduction.
49.4170 Delegation of authority of administration to the Tribe.
49.4171 General provisions.
49.4172 Emissions inventory.
49.4173 VOC emissions control requirements for storage vessels.
49.4174 VOC emissions control requirements for dehydrators.
49.4175 VOC emissions control requirements for pneumatic pumps.
49.4176 VOC emissions control requirements for covers and closed-
vent systems.
49.4177 VOC emissions control devices.
49.4178 VOC emissions control requirements for fugitive emissions.
49.4179 VOC emissions control requirements for tank truck loading.
49.4180 VOC emissions control requirements for pneumatic 
controllers.
49.4181 Other combustion devices.
49.4182 Monitoring and testing requirements.
49.4183 Recordkeeping requirements.
49.4184 Notification and reporting requirements.

Sec.  49.4169   Introduction.

    (a) What is the purpose of Sec. Sec.  49.4169 through 49.4184? 
Sections 49.4169 through 49.4184 establish legally and practicably 
enforceable requirements for oil and natural gas sources on Indian 
country lands within the Uintah and Ouray Indian Reservation (U&O 
Reservation) to address ozone air quality. Section 49.4170 establishes 
provisions for delegation of authority to allow the Ute Indian Tribe to 
assist the EPA with administration of this Federal Implementation Plan 
(U&O FIP). Section 49.4171 contains general provisions and definitions 
applicable to oil and natural gas sources. Sections 49.4173 through 
49.4184 establish legally and practicably enforceable requirements to 
control and reduce VOC emissions from oil and natural gas well 
production and storage operations, natural gas processing, and 
gathering and boosting operations at oil and natural gas sources that 
are located on Indian country lands within the U&O Reservation.
    (b) Am I subject to Sec. Sec.  49.4169 through 49.4184? Sections 
49.4169 through 49.4184, as appropriate, apply to each owner or 
operator of an oil and natural gas source (as defined at 40 CFR 49.102) 
located on Indian country lands within the U&O Reservation that has 
equipment or activities that meet the applicability thresholds 
specified in each section. Generally, the equipment and activities at 
oil and natural gas sources that are already subject to and in 
compliance with VOC emission control requirements under another EPA 
standard or other federally enforceable requirement, as specified in 
each appropriate subsection later, are considered to be in compliance 
with the requirements to control VOC emissions from that same equipment 
under this U&O FIP.
    (c) When must I comply with Sec. Sec.  49.4169 through 49.4184? For 
oil and natural gas sources that commence construction before February 
6, 2023, compliance with Sec. Sec.  49.4169 through 49.4171 and 
Sec. Sec.  49.4173 through 49.4184, as applicable, is required no later 
than February 6, 2024. You may submit a written request to the EPA for 
an extension of the compliance date for existing sources. The extension 
request must be submitted to the EPA at least 60 days before the 
compliance deadline, must identify the specific provision(s) for which 
you seek an extension, must include an alternative compliance 
deadline(s), and must provide the rationale for the requested extension 
with supporting information explaining how you will effectively meet 
all applicable requirements after the requested alternative compliance 
deadline. Any decision to approve or deny a request, including the 
length of time of an approved request, will be based on the merits of 
case-specific circumstances. For oil and natural gas sources that 
commence construction on or after February 6, 2023, compliance with 
Sec. Sec.  49.4169 through 49.4171 and Sec. Sec.  49.4173 through 
49.4184, as applicable, is required upon startup.

Sec.  49.4170   Delegation of authority of administration to the Tribe.

    (a) What is the purpose of this section? The purpose of this 
section is to establish the process by which the Regional Administrator 
may delegate to the Ute Indian Tribe the authority to assist the EPA 
with administration of this U&O FIP. This section provides for 
administrative delegation and does not affect the eligibility criteria 
under Sec.  49.6 for treatment in the same manner as a state.
    (b) How does the Ute Indian Tribe request delegation? To be 
delegated authority to assist the EPA with administration of this U&O 
FIP, the authorized representative of the Ute Indian Tribe must submit 
a written request to the Regional Administrator that:
    (1) Identifies the specific provisions for which delegation is 
requested;
    (2) Includes a statement by the Ute Indian Tribe's legal counsel 
(or equivalent official) with the following information:
    (i) A statement that the Ute Indian Tribe is an Indian tribe 
recognized by the Secretary of the Interior;
    (ii) A descriptive statement that meets the requirements of Sec.  
49.7(a)(2) and demonstrates that the Ute Indian Tribe is currently 
carrying out substantial governmental duties and powers over a defined 
area;
    (iii) A description of the laws of the Ute Indian Tribe that 
provide adequate authority to carry out the aspects of the rule for 
which delegation is requested; and
    (3) Demonstrates that the Ute Indian Tribe has, or will have, 
adequate resources to carry out the aspects of the rule for which 
delegation is requested.
    (c) How is the delegation of administration accomplished? (1) A 
Delegation of Authority Agreement setting forth the terms and 
conditions of the delegation and specifying the provisions of this rule 
that the Ute Indian Tribe will be authorized to implement on behalf of 
the EPA will be entered into by the Regional Administrator and the Ute 
Indian Tribe. The Agreement will become effective on the date that both 
the Regional Administrator and the authorized representative of the Ute 
Indian Tribe have signed the Agreement. Once the delegation becomes 
effective, the Ute Indian Tribe will be responsible, to the extent 
specified in the Agreement, for assisting the EPA with administration 
of the FIP and will act as the Regional Administrator as that term is 
used in these regulations. Any Delegation of Authority Agreement will 
clarify the circumstances in which the term ``Regional Administrator'' 
found throughout the FIP is to remain the EPA Regional Administrator 
and when it is intended to refer to the ``Ute Indian Tribe,'' instead.
    (2) A Delegation of Authority Agreement may be modified, amended, 
or revoked, in part or in whole, by the Regional Administrator after 
consultation with the Ute Indian Tribe.
    (d) How will any Delegation of Authority Agreement be publicized? 
The Agency will publish a document in the Federal Register informing 
the public of any Delegation of Authority Agreement with the Ute Indian 
Tribe to assist the EPA with administration of all or a portion of the 
FIP and identifying such delegation in the FIP. The EPA will also 
publish an announcement of the Delegation of Authority Agreement in 
local newspapers.

[[Page 75378]]

Sec.  49.4171   General provisions.

    (a) At all times, including periods of startup, shutdown, and 
malfunction, each owner or operator must, to the extent practicable, 
design, operate, and maintain all equipment used for crude oil, 
condensate, intermediate hydrocarbon liquid, or produced water, and gas 
collection, storage, processing, and handling operations covered under 
Sec. Sec.  49.4171 and 49.4173 through 49.4184, regardless of emissions 
rate and including associated air pollution control equipment, in a 
manner that is consistent with good air pollution control practices and 
that minimizes leakage of VOC emissions to the atmosphere. 
Determination of whether acceptable operating and maintenance 
procedures are being used will be based on information available to the 
Administrator, including monitoring results, review of operating and 
maintenance procedures, and inspection of the source.
    (b) Definitions. As used in Sec. Sec.  49.4169 through 49.4184, all 
terms not defined have the meaning given them in the Act, in 40 CFR 
parts 60 and 63, in the Prevention of Significant Deterioration 
regulations at 40 CFR 52.21, in the Federal Minor New Source Review 
Program in Indian Country at Sec.  49.151, or in the Federal 
Implementation Plan for Managing Air Emissions from True Minor Sources 
in Indian Country in the Oil and Natural Gas Production and Natural Gas 
Processing Segments of the Oil and Natural Gas Sector at Sec.  49.102. 
The following terms are defined here:
    Bottom filling means the filling of a storage vessel through an 
inlet at or near the bottom of the storage vessel designed to have the 
opening covered by the liquid after the pipe normally used to withdraw 
liquid can no longer withdraw any liquid.
    Condensate means hydrocarbon liquid separated from produced natural 
gas that condenses due to changes in temperature, pressure, or both, 
and that remains liquid at standard conditions.
    Crude oil means hydrocarbon liquids that are separated from well-
extracted reservoir fluids during oil and natural gas production 
operations, and that are stored or injected to pipelines as a saleable 
product. Condensate is not considered crude oil.
    Electronically controlled automatic ignition device means an 
electronic device which generates sparks across an electrode and 
reaches into a combustible gas stream traveling up a flare stack or 
entering an enclosed combustor, at the point of the pilot tip, equipped 
with a temperature monitor that signals the device to attempt to re-
light an extinguished pilot flame.
    Enclosed combustor means a thermal oxidation system with an 
enclosed combustion chamber that maintains a limited constant 
temperature by controlling fuel and combustion air.
    Flare means a thermal oxidation system using an open (without 
enclosure) flame that is designed and operated in accordance with the 
requirements of 40 CFR 60.18(b). An enclosed combustor is not 
considered a flare. A combustion device is not considered a flare when 
installed horizontally or vertically within an open pit and used to 
combust produced natural gas during initial well completion or 
temporarily during emergencies when enclosed combustors or flares 
installed at a source are not operational or injection of recovered 
produced natural gas is unavailable.
    Flashing losses means natural gas emissions resulting from the 
presence of dissolved natural gas in the crude oil, condensate, 
intermediate hydrocarbon liquids or produced water, which are under 
high pressure that occurs as the liquids are transferred to storage 
vessels that are at atmospheric pressure.
    Fugitive emissions component means any component that has the 
potential to emit fugitive emissions of VOC at an oil and natural gas 
source, such as valves, connectors, pressure relief devices, open-ended 
lines, flanges, covers and closed vent systems not subject to Sec.  
49.4176, thief hatches or other openings on a controlled storage vessel 
not subject to Sec.  49.4173, compressors, instruments, and meters. 
Devices that vent as part of normal operations, such as natural gas-
driven pneumatic controllers or natural gas-driven pneumatic pumps, are 
not fugitive emissions components, insofar as the natural gas 
discharged from the device's vent is not considered a fugitive 
emission. Emissions originating from locations other than the device's 
vent, such as the thief hatch on a controlled storage vessel, would be 
considered fugitive emissions.
    Glycol dehydration unit process vent emissions means VOC-containing 
emissions from the glycol dehydration unit regenerator or still vent 
and the vent from the dehydration unit flash tank (if present).
    Indian country is defined at 18 U.S.C. 1151 and means.
    (i) All land within the limits of any Indian reservation under the 
jurisdiction of the United States Government, notwithstanding the 
issuance of any patent, and, including rights-of-way running through 
the reservation,
    (ii) All dependent Indian communities within the borders of the 
United States whether within the original or subsequently acquired 
territory thereof, and whether within or without the limits of a state, 
and
    (iii) All Indian allotments, the Indian titles to which have not 
been extinguished, including rights-of-way running through the same.
    Intermediate hydrocarbon liquids means any naturally occurring, 
unrefined petroleum liquid.
    Malfunction alarm and remote notification system means a system 
connected to an electronically controlled automatic ignition device 
that sends an alarm through a remote notification system to an owner or 
operator's central control center, if an attempt to relight the pilot 
flame is unsuccessful.
    Pneumatic controller means a natural gas-driven pneumatic 
controller as defined at 40 CFR 60.5430 and 60.5430a.
    Pneumatic pump means a natural gas-driven diaphragm pump as defined 
at 40 CFR 60.5430a.
    Pneumatic pump emissions means the VOC-containing emissions from 
pneumatic pumps.
    Produced natural gas means natural gas that is separated from 
extracted reservoir fluids during oil and natural gas production 
operations.
    Produced water means water that is extracted from the earth from an 
oil or natural gas production well, or that is separated from crude 
oil, condensate, or natural gas after extraction.
    Regional Administrator means the Regional Administrator of EPA 
Region 8 or an authorized representative of the Regional Administrator 
of EPA Region 8, except to the extent otherwise specifically specified 
in a Delegation of Authority Agreement between the Regional 
Administrator and the Ute Indian Tribe.
    Repaired means, for the purposes of fugitive emissions components, 
that fugitive emissions components are adjusted, replaced, or otherwise 
altered in order to eliminate fugitive emissions as defined in Sec.  
49.4178(d)(1)(iii), and subsequently monitored as specified in Sec.  
49.4178(d)(1)(ii), and that it is verified that emissions from the 
fugitive emissions components are below the applicable fugitive 
emissions definition.
    Standing and breathing losses means VOC emissions from fixed-roof 
storage vessels as a result of evaporative losses during storage.
    Storage vessel means a tank or other vessel that contains an 
accumulation of crude oil, condensate, intermediate hydrocarbon 
liquids, or produced water, and that is constructed primarily of non-
earthen materials (such as wood,

[[Page 75379]]

concrete, steel, fiberglass, or plastic), which provide structural 
support. A well completion vessel that receives recovered liquids from 
a well after startup of production following flowback for a period 
which exceeds 60 days is considered a storage vessel under this 
subpart. A tank or other vessel will not be considered a storage vessel 
if it has been removed from service in accordance with the requirements 
of Sec.  49.4173(a)(3), until that tank or other vessel has been 
returned to service. For the purposes of this subpart, the following 
are not considered storage vessels:
    (i) Vessels that are skid-mounted or permanently attached to 
something that is mobile (such as trucks, railcars, barges or ships), 
and are intended to be located at a site for less than 180 consecutive 
days. If you do not keep or are not able to produce records, as 
required by Sec.  49.4183(a)(1)(iv), showing that the vessel has been 
located at a site for less than 180 consecutive days, the vessel is 
considered to be a storage vessel from the date it was first located at 
the site. This exclusion does not apply to a well completion vessel as 
described above.
    (ii) Process vessels such as surge control vessels, bottoms 
receivers, and knockout vessels.
    (iii) Pressure vessels designed to operate in excess of 204.9 
kilopascals and without emissions to the atmosphere.
    Submerged fill pipe means any fill pipe with a discharge opening 
that is entirely submerged when the liquid level is six inches above 
the bottom of the storage vessel and the pipe normally used to withdraw 
liquid from the storage vessel can no longer withdraw any liquid.
    Supervisory Control and Data Acquisition (SCADA) system generally 
refers to industrial control computer systems that monitor and control 
industrial infrastructure or source-based processes.
    Unsafe to repair means (in the context of fugitive emissions 
monitoring) that operator personnel would be exposed to an imminent or 
potential danger as a consequence of the attempt to repair the leak 
during normal operation of the source.
    Visible smoke emissions means air pollution generated by thermal 
oxidation in a flare or enclosed combustor and occurring immediately 
downstream of the flame present in those units. Visible smoke occurring 
within, but not downstream of, the flame, does not constitute visible 
smoke emissions.
    Working losses means natural gas emissions from fixed roof storage 
vessels resulting from evaporative losses during filling and emptying 
operations.

Sec.  49.4172   Emissions inventory.

    (a) Applicability. The emissions inventory requirements of this 
section apply to each oil and natural gas source, as identified in 
Sec.  49.4169(b), that has actual emissions of any pollutant identified 
in paragraph (c) of this section greater than or equal to one ton in 
any consecutive 12-month period.
    (b) Each oil and natural gas source must submit an inventory for 
every third year, beginning with the 2023 calendar year, for all 
emission units at a source.
    (c) The inventory must include the total emissions for 
PM10, PM2.5, oxides of sulfur, nitrogen oxides, 
carbon monoxide, and volatile organic compounds, as defined at 40 CFR 
51.50, for each emissions unit at the source. Emissions for each 
emissions unit at the source must be calculated using the emissions 
unit's actual operating hours, appropriate emissions rates, the use of 
performance test results where applicable, product rates and types of 
materials processed, stored, or combusted during the calendar year of 
the reporting period.
    (d) The inventory must include the type and efficiency, for each 
pollutant controlled, of any air pollution control equipment present at 
the reporting source. The detail of the emissions inventory must be 
consistent with the detail and data elements required by 40 CFR part 
51, subpart A.
    (e) The inventory must be submitted to the EPA no later than April 
15th of the year following each inventory year.
    (f) The inventory must be submitted in an electronic format 
specific to this source category, as instructed on the EPA Region 8 
website at https://www.epa.gov/air-quality-implementation-plans/approved-air-quality-implementation-plans-region-8.

Sec.  49.4173  VOC emissions control requirements for storage vessels.

    (a) Applicability. The VOC emissions control requirements of this 
section apply to storage vessels at an oil and natural gas source (as 
specified in Sec.  49.4169(b)) as follows:
    (1) For oil and natural gas sources that began operations before 
February 6, 2023, the VOC emissions control requirements of this 
section apply when the source-wide potential for VOC emissions from the 
collection of all storage vessels, glycol dehydrators, and pneumatic 
pumps is equal to or greater than 4 tpy, as determined according to 
this section. The potential for VOC emissions must be calculated using 
a generally accepted model or calculation methodology, based on the 
maximum average daily throughput determined for a 30-day period of 
production during the 12 months before the compliance deadline for the 
affected source under this rule. The determination may take into 
account requirements under a legally and practicably enforceable limit 
in an operating permit or other federally enforceable requirement. You 
must reevaluate the source-wide VOC emissions from the collection of 
all storage vessels, glycol dehydrators and pneumatic pumps for each 
modification to an existing source; or
    (2) For oil and natural gas sources that began operations on or 
after February 6, 2023, the VOC emissions control requirements of this 
section apply upon startup of operation.
    (3) Modification to an oil and natural gas source requires a re-
evaluation of the source-wide VOC emissions from the collection of all 
storage vessels, glycol dehydrators and pneumatic pumps. Adding 
production from a new well or increasing production at an existing well 
is considered a modification of a well site. Increasing maximum 
throughput at a tank battery, compressor station or natural gas 
processing plant is considered a modification.
    (b) Exemptions. (1) This section does not apply to storage vessels 
located at an oil and natural gas source that are subject to the 
emissions control requirements for storage vessels in 40 CFR part 60, 
subparts OOOO or OOOOa, or 40 CFR part 63, subpart HH.
    (2) This section does not apply to an emergency storage vessel 
located at an oil and natural gas source, if it meets the following 
requirements:
    (i) The emergency storage vessel is not used as an active storage 
vessel;
    (ii) The owner or operator empties the emergency storage vessel no 
later than 15 days after receiving fluids;
    (iii) The emergency storage vessel is equipped with a liquid level 
gauge or equivalent device; and
    (iv) Records are kept of the usage of each emergency storage vessel 
as required in Sec.  49.4183(a)(3), including the date the vessel 
received fluids, the volume of fluids received in barrels, the date the 
vessel was emptied, and the volume of fluids emptied in barrels.
    (3) This section does not apply to storage vessels that are removed 
from service. If you remove a storage vessel from service, you must 
comply with paragraphs (b)(3)(i) through (iii) of this section.

[[Page 75380]]

    (i) For a storage vessel to be removed from service, you must 
comply with the requirements of paragraphs (b)(3)(i)(A) and (B) of this 
section.
    (A) You must completely empty and degas the storage vessel, such 
that the storage vessel no longer contains crude oil, condensate, 
intermediate hydrocarbon liquids or produced water. A storage vessel 
where liquid is left on walls, as bottom clingage, or in pools due to 
floor irregularity is considered to be completely empty.
    (B) You must keep records as required in Sec.  49.4183(a)(4), 
identifying each storage vessel removed from service and the date of 
its removal from service.
    (ii) If a storage vessel identified in paragraph (b)(3)(i)(B) of 
this section is returned to service, you must determine its 
applicability as provided in paragraph (a) of this section, and you 
must keep records as required in Sec.  49.4183(a)(4), identifying the 
storage vessel and the date of its return to service.
    (c) VOC emission control requirements. For each storage vessel, you 
must comply with the VOC emissions control requirements of paragraph 
(c)(1) or (c)(2) of this section.
    (1) You must reduce VOC emissions from each storage vessel by at 
least 95.0 percent on a continuous basis according to paragraph 
(c)(1)(i) or (ii) of this section. You must equip each storage vessel 
with a cover that meets the conditions specified in Sec.  49.4176(c), 
and must route all flashing, working, standing and breathing losses 
from the storage vessels through a closed-vent system that meets the 
conditions specified in Sec.  49.4176(d) to:
    (i) An operating system designed to recover 100 percent of the 
emissions and recycle them for use in a process unit or incorporate 
them into a product; or
    (ii) An enclosed combustor or flare that is designed to reduce the 
mass content of VOC in the natural gas emissions vented to the device 
by at least 95.0 percent and that is operated as specified in Sec.  
49.4177;
    (2) You must maintain the source-wide uncontrolled actual VOC 
emissions from the collection of all storage vessels, glycol 
dehydrators, and pneumatic pumps at an oil and natural gas source at 
less than 4 tpy. Before using the uncontrolled actual VOC emission rate 
for compliance purposes, you must demonstrate that the uncontrolled 
actual VOC emissions have remained at less than 4 tpy, as determined 
monthly for 12 consecutive months. After such demonstration, you must 
determine the uncontrolled actual VOC emission rate each month. The 
uncontrolled actual VOC emissions must be calculated using a generally 
accepted model or calculation methodology. Monthly calculations must be 
based on the average throughput of the source for the month. Monthly 
calculations must be separated by at least 14 days. You must comply 
with paragraph (c)(1) of this section within 30 days of the monthly 
emissions determination required in this section if the determination 
indicates that VOC emissions from the collection of all storage 
vessels, glycol dehydrators, and pneumatic pumps at your oil and 
natural gas source increased to 4 tpy or greater.
    (3) Except as provided in paragraph (c)(4) of this section, if you 
use a control device to reduce emissions from your storage vessels, you 
must equip each storage vessel with a cover that meets the requirements 
of Sec.  49.4176(c).
    (4) If you use a floating roof to reduce emissions, you must meet 
the requirements of Sec.  60.112b(a)(1) or (2) and the relevant 
monitoring, inspection, recordkeeping, and reporting requirements in 40 
CFR part 60, subpart Kb.
    (5) After a minimum of 12 consecutive months of operation at a 
source that begins operation on or after February 6, 2023, controls may 
be removed if the source-wide uncontrolled actual VOC emissions from 
the collection of all storage vessels, glycol dehydrators, and 
pneumatic pumps has been maintained at a rate less than 4 tpy, as 
determined according to paragraph (c)(2) of this section.

Sec.  49.4174   VOC emissions control requirements for dehydrators.

    (a) Applicability. The VOC emissions control requirements of this 
section apply to each glycol dehydration unit located at an oil and 
natural gas source as identified in Sec.  49.4169(b) where the source-
wide potential for VOC emissions from the collection of all storage 
vessels, glycol dehydrators, and pneumatic pumps is equal to or greater 
than 4 tpy, as determined according to Sec.  49.4173. You must 
reevaluate the source-wide VOC emissions from the collection of all 
storage vessels, glycol dehydrators and pneumatic pumps for each 
modification to an existing source, as described in Sec.  
49.4173(a)(3). Applicability for glycol dehydrators that began 
operation before February 6, 2023 must be determined using uncontrolled 
actual emissions. Applicability for glycol dehydrators that began 
operation on or after February 6, 2023 must be determined using 
potential to emit.
    (b) Exemptions. This section does not apply to glycol dehydration 
units subject to the emissions control requirements for glycol 
dehydration unit process vents in 40 CFR part 63, subpart HH.
    (c) VOC emissions control requirements. For each glycol dehydration 
unit, you must comply with the VOC emissions control requirements of 
paragraphs (c)(1) or (2) of this section.
    (1) You must reduce VOC emissions from each glycol dehydration unit 
process vent by at least 95.0 percent on a continuous basis according 
to paragraphs (c)(1)(i) and (ii) of this section. You must route all 
glycol dehydration unit process vent emissions through a closed-vent 
system that meets the conditions specified in Sec.  49.4176(d) to:
    (i) An operating system designed to recover 100 percent of the 
emissions and recycle them for use in a process unit or incorporate 
them into a product; or
    (ii) An enclosed combustor or flare designed to reduce the mass 
content of VOC in the emissions vented to the device by at least 95.0 
percent and operated as specified in Sec.  49.4177; or
    (2) You must maintain the source-wide uncontrolled actual VOC 
emissions from the collection of all storage vessels, glycol 
dehydrators, and pneumatic pumps at an oil and natural gas source at 
less than 4 tpy for 12 consecutive months in accordance with the 
procedures specified in Sec.  49.4173(c)(2).

Sec.  49.4175  VOC emissions control requirements for pneumatic pumps.

    (a) Applicability. The requirements of this section apply to each 
pneumatic pump located at an oil and natural gas source as identified 
in Sec.  49.4169(b) where the source-wide potential for VOC emissions 
from the collection of all storage vessels, glycol dehydrators, and 
pneumatic pumps is equal to or greater than 4 tpy, as determined 
according to Sec.  49.4173. You must reevaluate the source-wide VOC 
emissions from the collection of all storage vessels, glycol 
dehydrators and pneumatic pumps for each modification to an existing 
source, as described in Sec.  49.4173(a)(3). Applicability for 
pneumatic pumps that began operation before February 6, 2023 must be 
determined using uncontrolled actual emissions. Applicability for 
pneumatic pumps that began operation on or after February 6, 2023 must 
be determined using potential to emit.
    (b) Exemptions. This section does not apply to pneumatic pumps 
subject to the emissions control requirements for pneumatic pumps in 40 
CFR part 60, subpart OOOOa.

[[Page 75381]]

    (c) VOC Emission Control Requirements. For each pneumatic pump, you 
must comply with the VOC emissions control requirements of paragraph 
(c)(1) or (2) of this section.
    (1) You must reduce VOC emissions from each pneumatic pump by at 
least 95.0 percent on a continuous basis according to paragraph 
(c)(1)(i) or (ii) of this section. You must route all pneumatic pump 
emissions through a closed-vent system that meets the conditions 
specified in Sec.  49.4176(d) to:
    (i) An operating system designed to recover 100 percent of the 
emissions and recycle them for use in a process unit or incorporate 
them into a product; or
    (ii) An enclosed combustor or flare designed to reduce the mass 
content of VOC in the emissions vented to the device by at least 95.0 
percent and operated as specified in Sec.  49.4177; or
    (2) You must maintain the source-wide uncontrolled actual VOC 
emissions from the collection of all storage vessels, glycol 
dehydrators, and pneumatic pumps at an oil and natural gas source at 
less than 4 tpy for any 12 consecutive months in accordance with the 
procedures specified in Sec.  49.4173(c)(2).

Sec.  49.4176  VOC emissions control requirements for covers and 
closed-vent systems.

    (a) Applicability. The VOC emissions control requirements in this 
section apply to each cover on a storage vessel that is subject to 
Sec.  49.4173, and to each closed-vent system that is used to convey 
VOC emissions from the collection of all storage vessels, glycol 
dehydration units, or pneumatic pumps (to a vapor recovery system or 
control device) that are subject to Sec. Sec.  49.4173 through 49.4175.
    (b) Exemptions. This section does not apply to covers and closed-
vent systems that are subject to the requirements for covers and 
closed-vent systems in 40 CFR part 60, subparts OOOO or OOOOa, or 40 
CFR part 63, subpart HH.
    (c) Covers. Each owner or operator must equip all openings on each 
storage vessel with a cover to ensure that all flashing, working, 
standing and breathing loss emissions are routed through a closed-vent 
system to a vapor recovery system, an enclosed combustor, or a flare.
    (1) Each cover and all openings on the cover (e.g., access hatches, 
sampling ports, pressure relief valves (PRV), and gauge wells) must 
form a continuous impermeable barrier over the entire surface area of 
the crude oil, condensate, intermediate hydrocarbon liquids, or 
produced water in the storage vessel.
    (2) Each cover opening must be secured in a closed, sealed position 
(e.g., covered by a gasketed lid or cap) whenever material is in the 
unit on which the cover is installed except when it is necessary to use 
an opening as follows:
    (i) To add fluids to, or remove fluids from the unit (this includes 
openings necessary to equalize or balance the internal pressure of the 
unit following changes in the level of the material in the unit);
    (ii) To inspect or sample the fluids in the unit; or
    (iii) To inspect, maintain, repair, or replace equipment located 
inside the unit.
    (3) Each thief hatch cover must be weighted and properly seated to 
ensure that flashing, working, standing, and breathing loss emissions 
are routed through the closed-vent system to the vapor recovery system, 
the enclosed combustor, or the flare under normal operating conditions.
    (4) Each PRV must be set to release at a pressure that will ensure 
that flashing, working, standing, and breathing loss emissions are 
routed through the closed-vent system to the vapor recovery system, the 
enclosed combustor, or the flare under normal operating conditions.
    (d) Closed-vent systems. Each owner or operator must meet the 
following requirements for closed-vent systems:
    (1) Each closed-vent system must route all captured storage vessel 
emissions from flashing, working, standing, and breathing losses; 
glycol dehydration unit process vent emissions; and pneumatic pump 
emissions from the oil and natural gas source to a gathering pipeline 
system for sale, use in a process unit, incorporation into a product, 
or other beneficial purpose, or to a VOC emission control device, as 
specified in Sec. Sec.  49.4173 through 49.4175.
    (2) All vent lines, connections, fittings, valves, relief valves, 
and any other appurtenances employed to collect or contain captured 
storage vessel emissions from flashing, working, standing, and 
breathing losses; glycol dehydration unit process vent emissions; or 
pneumatic pump emissions; or to transport such emissions to a gathering 
pipeline system for sale, use in a process unit, incorporation into a 
product, or other beneficial purpose, or to a VOC emission control 
device, as specified in Sec. Sec.  49.4173 through 49.4175, must be 
maintained and operated properly at all times.
    (3) Each closed-vent system must be designed to operate with no 
detectable emissions, as demonstrated by the closed-vent system 
monitoring requirements in Sec.  49.4182(c).
    (4) If any closed-vent system contains one or more bypass devices 
that could be used to divert all or a portion of the captured storage 
vessel flashing, working, standing, and breathing losses; glycol 
dehydration unit process vent emissions; or pneumatic pump emissions 
from entering a gathering pipeline system for sale, use in a process 
unit, incorporation into a product, or other beneficial purpose, or 
from being transferred to the VOC emissions control device, the owner 
or operator must meet one of the requirements in paragraphs (d)(4)(i) 
or (ii) of this section for each bypass device. Low leg drains, high 
point bleeds, analyzer vents, open-ended valves or lines, and safety 
devices are not subject to the requirements applicable to bypass 
devices.
    (i) At the inlet to a bypass device the owner or operator must 
properly install, calibrate, maintain, and operate a flow indicator 
that is capable of taking continuous readings and sounding an alarm 
when the bypass device is open such that emissions are being, or could 
be, diverted away from a gathering pipeline system for sale, use in a 
process unit, incorporation into a product, or other beneficial 
purpose, or the VOC emission control device and into the atmosphere; or
    (ii) The owner or operator must secure the bypass device valve 
installed at the inlet to the bypass device in the non-diverting 
position using a car-seal or a lock-and-key type configuration.

Sec.  49.4177   VOC emissions control devices.

    (a) Applicability. The requirements in this section apply to all 
flares and enclosed combustors used to control VOC emissions at an oil 
and natural gas source, as identified in Sec.  49.4169(b), in order to 
meet the requirements specified in Sec. Sec.  49.4173 through 49.4176, 
as applicable.
    (b) Exemptions. This section does not apply to VOC emission control 
devices that are subject to the requirements for control devices used 
to comply with the emissions standards in 40 CFR part 60, subparts OOOO 
or OOOOa; or 40 CFR part 63, subpart HH.
    (c) Enclosed combustors and flares. Each owner or operator must 
meet the following requirements for enclosed combustors and flares:
    (1) For each enclosed combustor or flare, the owner or operator 
must follow the manufacturer's written operating instructions, 
procedures, and

[[Page 75382]]

maintenance schedule to ensure good air pollution control practices for 
minimizing emissions;
    (2) The owner or operator must ensure that each enclosed combustor 
or flare is designed to have sufficient capacity to reduce the mass 
content of VOC in the captured emissions routed to it by at least 95.0 
percent for the minimum and maximum natural gas volumetric flow rate 
and BTU content routed to the device;
    (3) Each enclosed combustor or flare must be operated to reduce the 
mass content of VOC in the captured emissions routed to it by 
continuously meeting at least 95.0 percent VOC control efficiency;
    (4) The owner or operator must ensure that each flare is designed 
and operated in accordance with the requirements of 40 CFR 60.18(b) for 
such flares;
    (5) The owner or operator must ensure that each enclosed combustor 
is:
    (i) A model that is:
    (A) Demonstrated by a manufacturer to meet the VOC control 
efficiency requirements of Sec. Sec.  49.4173 through 49.4176 using 
EPA-approved performance test procedures specified in 40 CFR 60.5413; 
or
    (B) Demonstrated by the owner or operator to meet the VOC control 
efficiency requirements of Sec. Sec.  49.4173 through 49.4176 according 
to the procedures and schedule specified in Sec.  49.4182(d)(1);
    (ii) Operated properly at all times that captured emissions are 
routed to it;
    (iii) Operated with a liquid knock-out system to collect any 
condensable vapors (to prevent liquids from going through the control 
device);
    (iv) Equipped and operated with a flash-back flame arrestor;
    (v) Equipped and operated with one of the following:
    (A) A continuous burning pilot; or
    (B) An operational electronically controlled automatic ignition 
device;
    (vi) Equipped with a monitoring system for continuous measuring and 
recording of the parameters that indicate proper operation of each 
enclosed combustor or flare, including each continuous burning pilot 
flame or electronically controlled automatic ignition device, to 
monitor and document proper operation of the enclosed combustor or 
flare. Examples of such continuous monitoring systems may include a 
thermocouple and a chart recorder, data logger or similar device, or 
connection to a SCADA system;
    (vii) Maintained in a leak-free condition; and
    (viii) Operated with no visible smoke emissions.
    (d) Other control devices. Upon prior written approval by the EPA, 
the owner or operator may use control devices other than those listed 
above that are determined by the EPA to be capable of reducing the mass 
content of VOC in the natural gas routed to it by at least 95.0 
percent, provided that:
    (1) In operating such control devices, the owner or operator must 
follow the manufacturer's written operating instructions, procedures 
and maintenance schedule to ensure good air pollution control practices 
for minimizing emissions; and
    (2) The owner or operator must ensure there is sufficient capacity 
to reduce the mass content of VOC in the produced natural gas and 
natural gas emissions routed to such other control devices by at least 
95.0 percent for the minimum and maximum natural gas volumetric flow 
rate and BTU content routed to each device.
    (3) The owner or operator must operate such a control device to 
reduce the mass content of VOC in the produced natural gas and natural 
gas emissions routed to it by at least 95.0 percent.

Sec.  49.4178   VOC emissions control requirements for fugitive 
emissions.

    (a) Applicability. The requirements of this section apply to all 
owners or operators of the collection of fugitive emissions components, 
as defined in Sec.  49.4171, located at any oil and natural gas source, 
as identified in Sec.  49.4169(b), except that this section does not 
apply to owners or operators of the collection of fugitive emissions 
components at an oil and natural gas source that is subject to the 
fugitive emissions monitoring requirements in 40 CFR part 60, subpart 
OOOOa.
    (b) Owners or operators of the collection of fugitive emissions 
components must comply with paragraph (d) of this section if either of 
the following is true:
    (1) The collection of fugitive emissions components is located at 
an oil and natural gas source that is required to control VOC emissions 
according to Sec. Sec.  49.4173 through 49.4177 of this section (i.e., 
the source-wide potential for VOC emissions from the collection of all 
storage vessels, glycol dehydrators, and pneumatic pumps is equal to or 
greater than 4 tpy, as determined according to Sec.  49.4173(a)(1)); or
    (2) The collection of fugitive emissions components is located at a 
well site, as defined in 40 CFR 60.5430a, that at any time has total 
production greater than 15 barrels of oil equivalent (boe) per day 
based on a rolling 12-month average.
    (c) Owners or operators of the collection of fugitive emissions 
components for which neither (b)(1) nor (b)(2) is true must comply with 
either paragraph (c)(1) or paragraph (c)(2) of this section.
    (1) You must monitor all fugitive emissions components and repair 
all sources of fugitive emissions in accordance with paragraph (d) of 
this section. You must keep records in accordance with Sec.  49.4183 
and report in accordance with Sec.  49.4184; or
    (2) You must maintain the total production for the well site at or 
below 15 boe per day based on a rolling 12-month average. You must 
demonstrate that the total daily oil and natural gas production from 
the collection of all wells producing to the well site is at or below 
15 boe per day, based on a 12-month rolling average, according to the 
procedures in paragraph (e) of this section. You must maintain records 
as specified in Sec.  49.4183(a)(11).
    (d) Monitoring requirements. (1) Each owner or operator must 
develop and implement a fugitive emissions monitoring plan to reduce 
emissions from fugitive emissions components at all of their oil and 
natural gas sources on Indian country lands within the U&O Reservation. 
This Reservation-wide monitoring plan must include the following 
elements, at a minimum:
    (i) A requirement to perform an initial monitoring of the 
collection of fugitive emissions components at each oil and natural gas 
source by February 6, 2024;
    (ii) A requirement to perform subsequent monitoring of the 
collection of fugitive emissions components at each oil and natural gas 
source once every 6 months after the initial monitoring survey, with 
consecutive monitoring surveys conducted at least 4 months apart and no 
more than 7 months apart.
    (iii) A description of the technique used to identify leaking 
fugitive emission components, which must be limited to:
    (A) Onsite EPA Reference Method 21, 40 CFR part 60, appendix A, 
where an analyzer reading of 500 parts per million volume (ppmv) VOC or 
greater is considered a leak in need of repair;
    (B) Onsite optical gas imaging instruments, as defined in 40 CFR 
60.18(g)(4), where any visible emissions are considered a leak in need 
of repair, unless the owner or operator evaluates the leak with an 
analyzer meeting EPA Reference Method 21 at 40 CFR part 60, appendix A, 
and the concentration is less than 500 ppmv. The optical gas imaging 
instrument must be capable of meeting the optical gas imaging

[[Page 75383]]

equipment requirements specified in 40 CFR part 60, subpart OOOOa; or
    (C) Another method approved by the Administrator to demonstrate 
compliance with the fugitive emissions monitoring requirements. To be 
approved, you must demonstrate that the alternative method achieves 
emissions reductions that equal or exceed those that would result from 
the application of either Method 21 or optical gas imaging instruments. 
Approval of an alternative method will be subject to public notice and 
comment.
    (iv) The manufacturer and model number of any fugitive emissions 
monitoring device to be used;
    (v) Procedures and timeframes for identifying and repairing 
components from which leaks are detected, including:
    (A) A requirement to repair any leaks identified from components 
that are safe to repair and do not require source shutdown as soon as 
practicable, but no later than 30 calendar days after discovering the 
leak;
    (B) Timeframes for inspecting and repairing leaking components that 
are difficult-to-monitor, unsafe-to-monitor, or require source 
shutdown, to be no later than the next required monitoring event, as 
noted in paragraphs (c)(1)(v)(B)(1) through (3) of this section:
    (1) If using Method 21, fugitive emissions components that cannot 
be monitored without elevating the monitoring personnel more than 2 
meters above the surface may be designated as difficult-to-monitor and 
must meet the specifications in paragraphs (c)(1)(v)(B)(1)(i) through 
(iv) of this section:
    (i) For all fugitive emissions components designated difficult-to-
monitor, a written plan must be developed and incorporated into the 
fugitive emissions monitoring plan.
    (ii) The plan must include the identification and location of each 
fugitive emissions component designated difficult-to-monitor.
    (iii) The plan must include an explanation of why each fugitive 
emissions component designated as difficult-to-monitor is difficult-to-
monitor.
    (iv) The plan must include a schedule for monitoring the difficult-
to-monitor fugitive emissions components at least once per calendar 
year and a schedule for repairing such fugitive emissions components 
according to paragraph (c)(1)(v)(B)(3) of this section;
    (2) Fugitive emissions components that cannot be monitored because 
monitoring personnel would be exposed to an immediate danger while 
conducting a monitoring survey may be designated as unsafe-to-monitor 
and must meet the specification in paragraphs (c)(1)(v)(B)(2)(i) 
through (iv) of this section:
    (i) A written plan must be developed for all of the fugitive 
emissions components designated unsafe-to-monitor and incorporated into 
the fugitive emissions monitoring plan;
    (ii) The plan must include the identification and location of each 
fugitive emissions component designated unsafe-to-monitor.
    (iii) The plan must include an explanation of why each fugitive 
emissions component designated as unsafe-to-monitor is unsafe-to-
monitor.
    (iv) The plan must include a schedule for monitoring the unsafe-to-
monitor fugitive emissions components as frequently as practicable 
during safe to inspect times and for repairing such fugitive emissions 
components according to paragraph (c)(1)(v)(B)(3) of this section;
    (3) If the repair or replacement of a fugitive emissions component 
designated difficult-to-monitor or unsafe-to-monitor is technically 
infeasible; would require a vent blowdown, a compressor station 
shutdown, a well shutdown, or well shut-in; or would be unsafe to 
repair during operation of the unit, the repair or replacement must be 
completed during the next scheduled compressor station shutdown, well 
shutdown, or well shut-in; after a planned vent blowdown; or within 2 
years, whichever is earlier; and
    (C) Procedures for verifying leaking component repairs, no more 
than 30 calendar days after repairing the leak;
    (vi) Training and experience needed before performing surveys;
    (vii) Procedures for calibration and maintenance of any fugitive 
emissions monitoring device to be used; and
    (viii) Standard monitoring protocols for each type of typical oil 
and natural gas source (e.g., well site, tank battery, compressor 
station), including a general list of component types that will be 
inspected and what supporting data will be recorded (e.g., wind speed, 
detection method device-specific operational parameters, date, time, 
and duration of inspection).
    (2) The owner or operator is exempt from inspecting and repairing a 
fugitive emissions component under any of the following circumstances:
    (i) The contacting process stream only contains glycol, amine, 
methanol, or produced water; or
    (ii) The component to be inspected is buried, insulated in a manner 
that prevents access to the components by a monitor probe or optical 
gas imaging device, or obstructed by equipment or piping that prevents 
access to the components by a monitor probe or optical gas imaging 
device.
    (e) Procedures for determining total well site production. The 
total well site production must be determined according to the 
following procedures:
    (1) Calculate the total average boe per day for each calendar month 
using:
    (i) For existing well sites, the records of production for the 
first 30 days after becoming subject to this section.
    (ii) For well sites that commence construction, reconstruction or 
modification on or after February 6, 2023, the first 30 days of 
production, performing the calculation within 45 days of the end of the 
first 30 days of production.
    (2) Determine the daily oil and natural gas production for each 
individual well at the well site for the month. To convert gas 
production to equivalent barrels of oil, divide the cubic feet of gas 
produced by 6,000.
    (3) Sum the daily production for each individual well at the well 
site to determine the total well site production and divide by the 
total number of days in the calendar month. This is the average daily 
total well site production for the month.
    (4) Use the result determined in paragraph (e)(2) of this section 
and average with the daily average well site production values 
determined for each of the preceding 11 months to calculate the rolling 
12-month average of the total well site production.

Sec.  49.4179   VOC emissions control requirements for tank truck 
loading.

    (a) Applicability. The requirements in this section apply to each 
owner or operator who loads or permits the loading of any intermediate 
hydrocarbon liquid or produced water at an oil and natural gas source 
as identified in Sec.  49.4169(b).
    (b) Tank truck loading requirements. Tank trucks used for 
transporting intermediate hydrocarbon liquid or produced water must be 
loaded and unloaded using measures to minimize VOC emissions. These 
measures must include, at a minimum, bottom filling or a submerged fill 
pipe, as defined in Sec.  49.4171(b).

Sec.  49.4180   VOC emissions control requirements for pneumatic 
controllers.

    (a) Applicability. The VOC emissions control requirements in this 
section apply to each owner or operator of any existing pneumatic 
controller located at an oil and natural gas source as identified in 
Sec.  49.4169(b).

[[Page 75384]]

    (b) Exemptions. This section does not apply to pneumatic 
controllers subject to and controlled in accordance with the 
requirements for pneumatic controllers in 40 CFR part 60, subparts OOOO 
or OOOOa.
    (c) Retrofit requirements. All existing pneumatic controllers must 
meet the standards established for pneumatic controllers that are 
constructed, modified, or reconstructed on or after October 15, 2013, 
as specified in 40 CFR part 60, subpart OOOO.
    (d) Documentation requirements. The owner or operator of any 
existing pneumatic controllers must meet the tagging requirements in 40 
CFR 60.5390(a), except that the month and year of installation, 
reconstruction or modification is not required.

Sec.  49.4181   Other combustion devices.

    (a) Applicability. The VOC emission control requirements in this 
section apply to each owner or operator of any existing enclosed 
combustor or flare located at an oil and natural gas source as 
identified in Sec.  49.4169(b) that is used to control VOC emissions, 
but that is not required under Sec. Sec.  49.4173 through 49.4175 of 
this rule.
    (b) Retrofit requirements. All existing enclosed combustors and 
flares must be equipped with an operational electronically controlled 
automatic ignition device.

Sec.  49.4182   Monitoring and testing requirements.

    (a) Applicability. The monitoring and testing requirements in 
paragraphs (c) and (d) of this section apply, as appropriate, to each 
oil and natural gas source as identified in Sec.  49.4169(b) with 
equipment or activities that are subject to Sec. Sec.  49.4173 through 
49.4177.
    (b) Exemptions. Paragraphs (c) and (d) of this section do not apply 
to any storage vessels, glycol dehydration units, pneumatic pumps, 
covers, or closed-vent systems, or to VOC emission control devices 
subject to and monitored in accordance with the monitoring requirements 
for such equipment and activities in 40 CFR part 60, subparts OOOO or 
OOOOa, or 40 CFR part 63, subpart HH.
    (c) Each owner or operator must inspect each cover and closed-vent 
system as specified in paragraphs (c)(1) or (2).
    (1) Conduct olfactory, visual, and auditory inspections at least 
once every calendar month, separated by at least 15 days between each 
inspection, of each cover and closed-vent system, including each bypass 
device, and each storage vessel thief hatch, seal, and pressure relief 
valve, to ensure proper condition and functioning of the equipment to 
identify defects that can result in air emissions according to the 
procedures. Examples of defects are visible cracks, holes, or gaps in 
the cover or piping, or between the cover and the separator wall; loose 
connections; liquid leaks; and broken, cracked, or otherwise damaged 
seals or gaskets on closure devices, caps, or other closure devices. If 
the storage vessel is partially or entirely buried, you must inspect 
only those portions of the cover that extend to or above the ground 
surface, and those connections that are on such portions of the cover 
(e.g., fill ports, access hatches, gauge wells) and can be opened to 
the atmosphere. The inspector should note whether there are signs of 
oil releases around storage vessel thief hatches, seals and pressure 
relief valves (e.g., staining on the storage vessel), which may 
indicate over-pressure events that occurred when the storage vessel was 
being filled. Any defects identified must be corrected or repaired 
within 30 days of identification.
    (2) Conduct optical gas imaging inspections of each cover and 
closed vent system for any visible emissions at the same frequency as 
the frequency for the collection of fugitive emissions components 
located at the oil and natural gas source, as specified in Sec.  
49.4178(d)(1).
    (d) Each owner or operator must monitor the operation of each 
enclosed combustor and flare to confirm proper operation and 
demonstrate compliance with the requirements of Sec.  49.4177(c), as 
follows and as applicable:
    (1) Demonstrate compliance with the requirement of Sec.  
49.4177(c)(5)(i)(B) that each enclosed combustor must be demonstrated 
by the owner or operator to meet the VOC control efficiency 
requirements of Sec. Sec.  49.4173 through 49.4176, by conducting 
performance tests using EPA-approved performance test methods and 
procedures specified in 40 CFR 60.5413 and according to the schedule 
specified in paragraphs (d)(1)(i) and (ii) of this section.
    (i) You must conduct an initial performance test within 180 days 
after the effective date of this rule for existing enclosed combustors, 
and within 180 days after initial startup for new enclosed combustors. 
You must submit the performance test results as specified in Sec.  
49.4184(a) within 60 days of completing the test.
    (ii) You must conduct periodic performance tests for all enclosed 
combustors required to conduct initial performance tests. You must 
conduct the first periodic performance test no later than 60 months 
after the initial performance test required in paragraph (d)(1)(i) of 
this section. You must conduct subsequent periodic performance tests at 
intervals no longer than 60 months following the previous periodic 
performance test or whenever you desire to establish a new operating 
limit. You must submit the periodic performance test results as 
specified in Sec.  49.4184(a) within 60 days of completing each test.
    (iii) The owner or operator of an enclosed combustor whose model is 
tested under, and meets the criteria of, Sec.  49.4177(c)(5)(i)(A) is 
not required to conduct performance testing.
    (2) Conduct inspections of each enclosed combustor or flare at 
least once every calendar month, separated by at least 15 days between 
each inspection, to confirm proper operation of the device, as follows:
    (i) Demonstrate that each enclosed combustor or flare is operated 
with no visible smoke emissions, except for periods not to exceed a 
total of 1 minute during any 15-minute period, by conducting a visible 
emissions test using section 11 of EPA Method 22 of appendix A-7 of 40 
CFR part 60. The observation period must be of sufficient length to 
meet the requirement for determining compliance with this visible 
emissions standard. Devices failing the visible emissions test must 
follow manufacturer's repair instructions, if available, or best 
combustion engineering practice as outlined in the unit inspection and 
maintenance plan, to return the unit to compliant operation. All 
inspection, repair, and maintenance activities for each unit must be 
recorded in a maintenance and repair log and must be available for 
inspection. Following return to operation from maintenance or repair 
activity, each device must pass a Method 22 of Appendix A-7 of 40 CFR 
part 60 visual observation as described in this paragraph.
    (ii) Conduct visual inspections to confirm that the pilot is lit 
when vapors are being routed to the device and that the continuous 
burning pilot or electronically controlled automatic ignition device 
and the continuous parameter monitoring system is operating properly;
    (iii) Conduct olfactory, visual and auditory inspections of all 
other equipment associated with the combustion device to ensure system 
integrity; and
    (iv) Respond to any indication of pilot flame failure and ensure 
that the pilot flame is relit as soon as practically and safely 
possible after discovery.
    (e) Where sufficient to meet the monitoring requirements in this 
section,

[[Page 75385]]

the owner or operator may use a SCADA system to monitor and record the 
required data.

Sec.  49.4183   Recordkeeping requirements.

    (a) Each owner or operator of an oil and natural gas source as 
identified in Sec.  49.4169(b) must maintain the following records, as 
applicable:
    (1) Monthly calculations, as specified in Sec.  49.4173(c)(2), 
demonstrating that the uncontrolled actual VOC emissions from the 
collection of all storage vessels, glycol dehydrators, and pneumatic 
pumps at an oil and natural gas source, as identified in Sec.  
49.4169(b), have been maintained at less than 4 tpy;
    (2) Records of monthly and rolling 12-month crude oil, condensate, 
intermediate hydrocarbon liquids, produced water or natural gas 
throughput;
    (3) For each emergency storage vessel that is exempted from the 
control requirements of Sec.  49.4173(b)(2), records of usage 
including:
    (i) The date the vessel received fluids;
    (ii) The volume of fluids received in barrels;
    (iii) The date the overflow vessel was emptied; and
    (iv) The volume of fluids emptied in barrels.
    (4) Identification of each storage vessel that is removed from 
service or returned to service as specified in Sec.  49.4173(b)(3), 
including the date the storage vessel was removed from service or 
returned to service.
    (5) For storage vessels that are skid-mounted or permanently 
attached to something that is mobile (such as trucks, railcars, barges 
or ships), records indicating the number of consecutive days that the 
vessel is located at an oil and natural gas source. If a storage vessel 
is removed from an oil and natural gas source and, within 30 days, is 
either returned to the source or replaced by another storage vessel at 
the source to serve the same or similar function, then the entire 
period since the original storage vessel was first located at the 
source, including the days when the storage vessel was removed, must be 
added to the count of the number of consecutive days.
    (6) For each enclosed combustor or flare at an oil and natural gas 
source required under Sec. Sec.  49.4173 through 49.4177:
    (i) Manufacturer-written, site-specific designs, operating 
instructions, operating procedures and maintenance schedules, including 
those of any operation monitoring systems;
    (ii) Date of installation;
    (iii) Records of required monitoring of operations in Sec.  
49.4182(d)(1);
    (iv) Records of any instances in which the pilot flame is not 
present or the monitoring equipment is not functioning in the enclosed 
combustor or flare, the date and times of the occurrence, the 
corrective actions taken, and any preventative measures adopted to 
prevent recurrence of the occurrence; and
    (v) Records of any visible emissions tests conducted according to 
Sec.  49.4182(d)(3), including any time periods in which visible smoke 
emissions are observed emanating from the enclosed combustor or flare.
    (7) For each closed-vent system:
    (i) The date of installation; and
    (ii) Records of any instances in which any closed-vent system or 
control device was bypassed or down, the reason for each incident, its 
duration, and the corrective actions taken, and any preventative 
measures adopted to avoid such bypasses or downtimes.
    (8) Documentation of all storage vessel and closed-vent system 
inspections required in Sec.  49.4182(c). All inspection records must 
include the following information:
    (i) The date of the inspection;
    (ii) The findings of the inspection;
    (iii) Any adjustments or repairs made as a result of the 
inspection, and the date of the adjustment or repair; and
    (iv) The inspector's name or identification number;
    (9) The Uinta Basin-wide fugitive emissions monitoring plan for the 
Indian country lands within the U&O Reservation, including all elements 
required by Sec.  49.4178(d).
    (10) Documentation of each fugitive emissions inspection conducted 
in accordance with Sec.  49.4178(d). All inspection records must 
include the following information:
    (i) The date of the inspection;
    (ii) The identification of any component that was determined to be 
leaking;
    (iii) The identification of any component designated difficult-to-
monitor or unsafe-to-monitor that was not inspected, and the reason it 
was not inspected;
    (iv) The date of the first attempt to repair the leaking component;
    (v) The identification of any leaking component with a delayed 
repair and the reason for the delayed repair:
    (A) For unavailable parts:
    (1) The date of ordering a replacement component; and
    (2) The date the replacement component was received; and
    (B) For a shutdown:
    (1) The reason the repair is technically infeasible;
    (2) The date of the shutdown;
    (3) The date of subsequent startup after a shutdown; and
    (4) Emission estimates of the shutdown and the repair if the delay 
is longer than 6 months;
    (vi) The date and description of any corrective action taken, 
including the date the component was verified to no longer be leaking;
    (vii) The identification of each component exempt under Sec.  
49.4178(d)(2), including the type of component and a description of the 
qualifying exemption; and
    (viii) The inspector's name or identification number.
    (11) For each well site complying with either Sec.  49.4178(b)(2) 
or Sec.  49.4178(c)(2), you must maintain records of the rolling 12-
month average daily production no later than 12 months before complying 
with Sec.  49.4178(b)(2) or Sec.  49.4178(c)(2).
    (12) For each electronically controlled automatic ignition system 
required under Sec.  49.4181, records demonstrating the date of 
installation and manufacturer specifications; and
    (13) For each retrofitted pneumatic controller, the records 
required in 40 CFR 60.5420(c)(4)(i).
    (b) Each owner or operator must keep all records required by this 
section onsite at the source or at the location that has day-to-day 
operational control over the source and must make the records available 
to the EPA upon request.
    (c) Each owner or operator must retain all records required by this 
section for a period of at least 5 years from the date the record was 
created.

Sec.  49.4184   Notification and reporting requirements.

    (a) Unless otherwise specified, each owner or operator must submit 
any documents required under this rule to: U.S. EPA Region 8, 
Enforcement and Compliance Assurance Division, Air and Toxics 
Enforcement Branch, 8ENF-AT, 1595 Wynkoop St., Denver, CO 80202, or 
documents may be submitted electronically to 
[email protected] and/or to the EPA's Compliance and 
Emissions Data Reporting Interface (CEDRI). Information on CEDRI is 
available at https://www.epa.gov/electronic-reporting-air-emissions/cedri; CEDRI can be accessed directly through the EPA's Central Data 
Exchange (CDX) at https://cdx.epa.gov/. The EPA will make all the 
information submitted through CEDRI available to the public without 
further notice to you. Do not use CEDRI to submit information you claim 
as confidential business information (CBI). Anything submitted using 
CEDRI cannot

[[Page 75386]]

later be claimed CBI. Although we do not expect persons to assert a 
claim of CBI, if you wish to assert a CBI claim, you must submit a 
complete file, including the information claimed to be CBI, on a 
compact disc, flash drive, or other commonly used electronic storage 
media to the EPA, and the electronic media must be clearly marked as 
CBI and mailed to U.S. EPA/OAQPS/CORE CBI Office, Attention: Group 
Leader, Measurement Policy Group, MD C404-02, 4930 Old Page Rd., 
Durham, NC 27703. The same information, with the CBI omitted, must be 
submitted to the EPA via [email protected] or the EPA's 
CDX as described earlier in this paragraph. All claims of CBI must be 
asserted at the time of submission. Furthermore, under CAA section 
114(c), emissions data is not entitled to confidential treatment, and 
the EPA is required to make emissions data available to the public. 
Thus, emissions data will not be protected as CBI and will be made 
publicly available.
    (b) Each owner and operator of an affected oil and natural gas 
source as identified in Sec.  49.4169(b) must submit an annual report 
containing the information specified in paragraphs (b)(1) through (3) 
of this section, as applicable. The annual report must cover affected 
operations for the previous calendar year. The initial annual report is 
due April 1st of the calendar year following February 6, 2023 and must 
cover all affected operations for the previous calendar year on and 
after February 6, 2023. Subsequent annual reports are due on the same 
date each year as the date the initial annual report was submitted. If 
you own or operate more than one oil and natural gas source, you may 
submit one report for multiple oil and natural gas sources, provided 
the report contains all of the information required as specified in 
paragraphs (b)(1) through (3) of this section. Annual reports may 
coincide with title V, NSPS OOOO or OOOOa, or NESHAP HH reports as long 
as all the required elements of the annual report are included. An 
alternative schedule on which the annual report must be submitted will 
be allowed as long as the schedule does not extend the reporting 
period. The annual report must include:
    (1) The owner or operator name, and the name and location (decimal 
degree latitude and longitude location indicating the datum used in 
parentheses) of each oil and natural gas source being included in the 
annual report.
    (2) The beginning and ending dates of the reporting period.
    (3) For each oil and natural gas source, a summary of the required 
records specified in Sec.  49.4183 that are identified in paragraphs 
(b)(3)(i) through (iv) of this section as they relate to the source's 
compliance with the requirements of Sec. Sec.  49.4173 through 49.4183.
    (i) For each enclosed combustor or flare at an oil and natural gas 
source required under Sec. Sec.  49.4173 through 49.4177:
    (A) Records of any instances in which the pilot flame is not 
present or the monitoring equipment is not functioning, the date and 
times of the occurrence, the corrective actions taken, and any 
preventative measures adopted to prevent recurrence of the occurrence; 
and
    (B) Records of any time periods in which visible smoke emissions 
are observed emanating from the enclosed combustor or flare.
    (ii) For each closed-vent system:
    (A) Records of any instances in which any closed-vent system or 
control device was bypassed or down, the reason for each incident, its 
duration, the corrective actions taken, and any preventative measures 
adopted to avoid such bypasses or downtimes; and
    (B) Records of any instances of defects identified during the 
monthly inspection required in Sec.  49.4182(c), including:
    (1) The date of the inspection;
    (2) The findings of the inspection;
    (3) Date and description of corrective adjustments or repairs made 
as a result of the inspection or reason for delay of repair; and
    (iii) For Fugitive Emissions Monitoring, records documenting each 
fugitive emissions inspection, including:
    (A) The date of the inspection;
    (B) Identification of any component that was determined to be 
leaking;
    (C) Identification of any component designated difficult-to-monitor 
or unsafe-to-monitor that was not inspected and the reason it was not 
inspected;
    (D) The date of repair of each leaking component;
    (E) Identification of any leaking component with a delayed repair, 
the reason for the delayed repair and the emission estimates associated 
with any shutdown and repair if the delay is longer than 6 months;
    (F) The date and description of any corrective action taken, 
including the date the component was verified to no longer be leaking;
    (G) The inspector's name or identification number;
    (H) For each well site complying with Sec.  49.4178(c)(2), you must 
specify that the well site is exempt from the requirements of Sec.  
49.4178(d) and submit the average daily production for the well site; 
and
    (iv) For each pneumatic controller with a natural gas bleed rate 
greater than the applicable standard, records of the reason for the use 
of the controller.

[FR Doc. 2022-24677 Filed 12-7-22; 8:45 am]
BILLING CODE 6560-50-P