Greenhouse Gas Reporting Rule: Revisions and Confidentiality Determinations for Petroleum and Natural Gas Systems; Correction, 71838-71848 [2024-18933]

Agencies

• ENVIRONMENTAL PROTECTION AGENCY

[Federal Register Volume 89, Number 171 (Wednesday, September 4, 2024)]
[Rules and Regulations]
[Pages 71838-71848]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2024-18933]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 98

[EPA-HQ-OAR-2023-0234; FRL-10246-03-OAR]
RIN 2060-AV49


Greenhouse Gas Reporting Rule: Revisions and Confidentiality 
Determinations for Petroleum and Natural Gas Systems; Correction

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule; correction and correcting amendments.

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SUMMARY: The Environmental Protection Agency (EPA) is correcting a 
final rule published in the Federal Register on May 14, 2024. The final 
rule amended requirements that apply to the petroleum and natural gas 
systems source category of the Greenhouse Gas Reporting Rule to ensure 
that reporting is based on empirical data, accurately reflects total 
methane emissions and waste emissions from applicable facilities and 
allows owners and operators of applicable facilities to submit 
empirical emissions data that appropriately demonstrate the extent to 
which a charge is owed under the Waste Emissions Charge. This document 
corrects inadvertent errors introduced in preparing the amendatory 
regulatory text for the final rule or in preparing the signed final 
rule for publication. These corrections do not result in any 
substantive changes to the final rule.

DATES: The Federal Register corrections, numbers 1.a through 1.ff and 
2.a through 2.q, are effective January 1, 2025. The correcting 
amendments in instructions 2 and 3, correcting Sec. Sec.  98.233 and 
98.236, respectively, are effective October 4, 2024.

ADDRESSES: EPA has established a docket for this action under Docket ID 
No. EPA-HQ-OAR-2023-0234. Publicly available docket materials are 
available either electronically at www.regulations.gov or in hard copy 
at Air and Radiation Docket and Information Center, EPA Docket Center, 
EPA/DC, EPA WJC West Building, 1301 Constitution Ave. NW, Room 3334, 
Washington, DC.

FOR FURTHER INFORMATION CONTACT: Jennifer Bohman, Climate Change 
Division, Office of Atmospheric Protection (MC-6207A), Environmental 
Protection Agency, 1200 Pennsylvania Ave. NW, Washington, DC 20460; 
telephone number: (202) 343-9548; email address: [email protected].

SUPPLEMENTARY INFORMATION: The EPA is correcting inadvertent errors in 
the regulatory text of the final rule as described in this section. 
These corrections are necessary to be consistent with the May 14, 2024 
final rule (89 FR 42062) (hereafter referred to as the ``final rule''), 
the redline-strikeout version of the final regulatory text in the 
docket for the final rule (hereinafter referred to as ``final rule 
redline-strikeout'') (Docket ID No. EPA-HQ-OAR-2023-0234-0459), and the 
preamble for the August 1, 2023 proposed rulemaking (88 FR 50282) 
(hereafter referred to as the ``proposed rule''). Under the 
Administrative Procedure Act (APA)'s good cause exception, 5 U.S.C. 
553(b)(B), it is unnecessary to take public comment on these technical, 
non-substantive corrections.
    The EPA is correcting 40 CFR 98.233(a)(2) to add ``as applicable'' 
after ``well-pad site, gathering and boosting site, or facility'' to 
clarify the reporting level. The ``as applicable'' language was used in 
the preamble to the final rule (89 FR 42107 and 42108, May 14, 2024), 
where the EPA discussed finalizing requirements for Calculation Method 
2 in 40 CFR 98.233(a)(2) to allow reporters to measure the natural gas 
emissions from each pneumatic device vented directly to the atmosphere 
at the well-pad site, gathering and boosting site, or facility, as 
applicable. The ``as applicable'' phrase was also correctly included in 
the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(a)(2)(iii) and (c)(2)(ii) to 
remove the extraneous instance of ``representative'' from ``measure the 
emissions under representative conditions representative of normal 
operations.'' The corrected text reads ``measure the emissions under 
conditions representative of normal operations.'' This phrase was 
correct in 40 CFR 98.233(a)(2)(iii) and (c)(2)(ii) in the final rule 
redline-strikeout. The correct phrase (without the duplicate 
``representative'') also appears in the final amended regulation two 
times, in the versions of 40 CFR 98.233(a)(2)(iii) and (c)(2)(ii) that 
were effective on July 15, 2024 (89 FR 42224 and 42228, respectively, 
May 14, 2024).
    The EPA is correcting 40 CFR 98.233(a)(2)(v)(A)(2) to replace an 
incorrect cross-reference to ``paragraph (a)(6) of this section'' with 
the correct cross-reference to ``paragraph (a)(7) of this section.'' 
The EPA proposed to reference ``paragraph (a)(6)'' in the Proposed 
Rule, in which 40 CFR 98.233(a)(6) was ``Type of natural gas pneumatic 
devices'' (88 FR 50384, August 1, 2023). In the final amendments, the 
``Type of natural gas pneumatic devices'' paragraph is 40 CFR 
98.233(a)(7) (89 FR 42242, May 14, 2024). The cross-reference to 
``paragraph (a)(7) of this section'' was correct in the final rule 
redline-strikeout. In addition, the correct paragraph reference appears 
in the version of 40 CFR 98.233(a)(2)(v)(A)(2) that became effective on 
July 15, 2024 (89 FR 42224, May 14, 2024). All other references to this 
section are correct.
    The EPA is correcting the version of 40 CFR 98.233(a)(3)(ii)(A) 
that became effective on July 15, 2024 (89 FR 42226, May 14, 2024) to 
replace an incomplete cross-reference to ``Sec.  98.234(a)(1) through 
(3)'' with the correct cross-reference to ``Sec.  98.234(a)(1) through 
(3), (6), and (7).'' The paragraphs that are cross-referenced in the 
final rule and the redline-strikeout version of the final regulatory 
text effective July 15, 2024 in the docket for the final rule (Docket 
ID No. EPA-HQ-OAR-2023-0234-0460) correspond to the amended version of 
40 CFR 98.234 that will be effective on January 1, 2025. However, the 
amendments to 40 CFR 98.234 that will be effective on January 1, 2025 
consolidate current 40 CFR 98.234(a)(6) into 40 CFR 98.234(a)(1) and 
consolidate current 40 CFR 98.234(a)(7) into 40 CFR 98.234(a)(2). 
Therefore, the EPA is correcting the cross-referenced paragraphs in the 
version of 40 CFR 98.233(a)(3)(ii)(A) that became effective on July 15, 
2024 so that all of the available methods are correctly referenced.
    The EPA is correcting 40 CFR 98.233(c)(1) to replace an incorrectly 
formatted cross-reference to ``Sec.  98.234(b) of this subpart'' with 
the correct cross-reference to ``Sec.  98.234(b).'' The cross reference 
as published does not follow the cross-reference requirements specified 
by the Office of the Federal Register. The cross-reference to

[[Page 71839]]

``Sec.  98.234(b)'' was correct in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(d) to replace an incorrect 
cross-reference to ``paragraphs (d)(5) through (11) of this section'' 
with the correct cross-reference to ``paragraphs (d)(5) through (12) of 
this section.'' The EPA specified in both the preamble to the Proposed 
Rule (88 FR 50304, August 1, 2023) and the preamble to the final rule 
(89 FR 42091, May 14, 2024) that the emission calculation methodologies 
for nitrogen removal units are identical to the existing calculation 
methodologies in 40 CFR 98.233(d) for acid gas removal units (AGR). 40 
CFR 98.233(d)(10) (revised to 40 CFR 98.233(12)) describes how to 
calculate mass emissions and is part of the existing calculation 
methods for AGRs. Per 40 CFR 98.236(a), reporters are required to 
report annual emissions totals, in metric tons of each GHG, for each 
applicable emission source. The final step in calculating mass 
emissions for AGRs and NRUs is specified in 40 CFR 98.233(d)(12) 
(existing 40 CFR 98.233(d)(10)) and is currently required by subpart W 
reporters with AGRs. The cross-reference to ``paragraphs (d)(5) through 
(12) of this section'' was correct in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(e)(2) to restore the paragraph 
label ``Calculation Method 2,'' which was inadvertently omitted from 
the republished version of 40 CFR 98.233. There were edits to this 
paragraph in the final rule, but the removal of the paragraph label was 
not included in the signed final rule and instead this error was 
introduced in preparing the signed final rule for publication. The 
paragraph label was correct in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(e) to add ``or to other non-
flare combustion units'' after ``routed to a regenerator firebox/fire 
tubes,'' correcting 40 CFR 98.233(e)(4) to add ``or other non-flare 
combustion unit'' after ``to a flare'' and to replace the phrase 
``vapor recovery system or flare'' with ``vapor recovery system, flare, 
or other non-flare combustion unit,'' correcting 40 CFR 
98.233(e)(4)(iii) to replace ``regenerator firebox/fire tubes'' with 
``other non-flare combustion unit'' and to replace the phrase ``vapor 
recovery system or flare'' with ``vapor recovery system, flare, or 
other non-flare combustion unit,'' and correcting 40 CFR 
98.233(e)(5)(ii)(B) and (iv) to add ``or other non-flare combustion 
unit'' after ``regenerator firebox/fire tubes.'' These corrections are 
consistent with the preamble to the final rule (89 FR 42124, May 14, 
2024), where we discussed our intent to finalize an amendment 
consistent with public comment to replace all proposed references to 
regenerator firebox/fire tubes in 40 CFR 98.236(e)(3) with references 
to non-flare combustion units, as commenters noted that desiccant 
dehydrators are not known to have configurations with regenerator 
firebox/fire tubes. The preamble to the final rule also described 
conforming changes in 40 CFR 98.233(e)(5) to specify procedures for 
calculating emissions from non-flare combustion units used with 
desiccant dehydrators that are the same as the procedures for 
calculating emissions from regenerator fireboxes/fire tubes that are 
used with small glycol dehydrators. The EPA is also correcting 40 CFR 
98.233(e)(4)(i) to replace the phrase ``vapor recovery system or 
flare'' with ``vapor recovery system, flare, or regenerator firebox/
fire tubes'' and correcting the first sentence 40 CFR 98.233(e)(5) to 
remove the phrase ``or other non-flare combustion unit.'' These 
corrections are needed because these provisions apply to glycol 
dehydrators rather than desiccant dehydrators, and glycol dehydrators 
do have regenerator fireboxes/fire tubes. The phrase ``or other non-
flare combustion unit'' was correctly included in the final rule 
redline-strikeout in 40 CFR 98.233(e)(5)(ii)(B) and (e)(5)(iv); the 
final rule redline-strikeout did not include any of the other 
conforming corrections.
    The EPA is correcting 40 CFR 98.233(f)(1)(i)(B) to correct a 
grammatical error in the phrase ``hours of each well is venting to the 
atmosphere'' The revised text reads ``hours that each well is vented to 
the atmosphere.'' This is a correction of a typographical grammar 
error; there is no change to the meaning of the provision. This 
typographical error is only partially corrected in the final rule 
redline-strikeout, in which the phrase reads ``hours of each well is 
vented to the atmosphere.''
    The EPA is correcting the version of 40 CFR 98.233(g) that became 
effective on July 15, 2024 (89 FR 42226, May 14, 2024) to remove an 
unnecessary term of ``/ 2'' in equations W-10A and W-10B. The inclusion 
of this term is redundant in both equations due to the addition of term 
``Zp,i'' to allow use of multiphase flow meters to measure 
gas flow rates during the initial flowback stage as an alternative to 
assuming the flowrate is one half the flow rate at the beginning of 
separation, as stated in the preamble to the final rule (89 FR 42132, 
May 14, 2024). The amendments to 40 CFR 98.233(g) that will be 
effective on January 1, 2025 correctly present equations W-10A and W-
10B without the inclusion of a ``/ 2'' term and with the addition of 
the same term ``Zp,i'' . Therefore, the EPA is correcting 
equations W-10A and W-10B to remove the ``/ 2'' that was inadvertently 
retained in the version of 40 CFR 98.233(g) that became effective on 
July 15, 2024 so that the equations are correct.
    The EPA is correcting 40 CFR 98.233(j)(4)(i)(C) and 
98.236(j)(1)(x)(F) to remove the reference to a thief hatch that is 
``not properly seated.'' The correction is consistent with the EPA's 
intent to remove from the proposed provisions the phrase ``not properly 
seated'' in 40 CFR 98.233(j)(4)(i)(C) through (D) and 40 CFR 
98.233(j)(4)(ii) and instead specify that a thief hatch is open if it 
is fully or partially open such there is a visible gap between the 
hatch cover and the hatch portal, as stated in the preamble to the 
final rule (89 FR 42132, May 14, 2024). The phrase ``not properly 
seated'' was correctly not included in 40 CFR 98.233(j)(4)(i)(C) or 
98.236(j)(1)(x)(F) in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(j)(5)(i) and (j)(5)(i)(B) to 
replace the requirement for a ``visual inspection'' with ``audio, 
visual, and olfactory inspection.'' The correction is consistent with 
the EPA's intent to require audio, visual, and olfactory (AVO) 
inspections in 40 CFR 98.233(j)(5) rather than just visual inspections 
to determine if a gas-liquid separator liquid dump valve is stuck in an 
open or partially open position, as stated in the preamble to the final 
rule (89 FR 42133, May 14, 2024). The phrase ``audio, visual, and 
olfactory inspection'' was correctly included in 40 CFR 98.233(j)(5)(i) 
or (j)(5)(i)(B) in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(n)(1)(ii)(A) to replace the 
cross-reference to ``Sec.  60.5413b of this chapter'' with a more 
specific correct cross-reference to ``Sec.  60.5413b(b) of this 
chapter.'' This correction is consistent with the EPA's stated intent 
in the preamble to the final rule (89 FR 42145, May 14, 2024), in which 
the EPA agreed with a commenter on the Proposed Rule that pointed out 
the proposed Tier 2 requirements for flares should include a cross- 
reference to the applicable section in 40 CFR part 60, subpart OOOOb 
(hereafter referred to as ``NSPS OOOOb'') that specifies performance 
test requirements for enclosed combustion devices in NSPS OOOOb (i.e., 
a subset of the total flare population under subpart W). The preamble 
to the final rule indicated that the oversight was corrected in 40 CFR

[[Page 71840]]

98.233(n)(1)(ii)(A) and 40 CFR 98.233(n)(1)(ii)(C) of the final 
amendments by including cross-references to 40 CFR 60.5413b(b) and (d) 
that require facilities to either conduct testing of enclosed 
combustion devices themselves or have testing conducted by the enclosed 
combustion device manufacturer. The cross-reference to ``Sec.  
60.5413b(b) of this chapter'' was correct in the final rule redline-
strikeout.
    The EPA is correcting 40 CFR 98.233(n)(1)(ii)(B) to replace an 
incorrect cross-reference to ``Sec.  60.5417b(b) of this chapter'' with 
the correct cross-reference to ``Sec.  60.5417b of this chapter.'' 40 
CFR 60.5417b describes the continuous monitoring requirements while the 
more specific reference to 40 CFR 60.5417b(b) lists the control devices 
that are exempt from the requirements. The correction is consistent 
with the EPA's intent for open flares to require that the NSPS OOOOb 
requirements in 40 CFR 60.5412b(a)(3) be followed, along with the 
applicable continuous compliance and continuous monitoring requirements 
in 40 CFR 60.5415b(f) and 40 CFR 60.5417b, respectively, as stated in 
the preamble to the final rule (89 FR 42140, May 14, 2024). The cross-
reference to ``Sec.  60.5417b of this chapter'' was correct in the 
final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(o)(6)(iii) to restore equation 
W-23, which was inadvertently omitted from the republished version of 
40 CFR 98.233. No changes to this equation were included in the signed 
final rule and instead this error was introduced in preparing the 
signed final rule for publication. The final rule redline-strikeout 
correctly included equation W-23.
    The EPA is correcting 40 CFR 98.233(p)(4)(ii) to restore paragraphs 
(A) and (B), which were inadvertently omitted from the republished 
version of 40 CFR 98.233. No changes to these paragraphs were included 
in the signed final rule and instead this error was introduced in 
preparing the signed final rule for publication. The final rule 
redline-strikeout correctly included 40 CFR 98.233(p)(4)(ii)(A) and 
(B).
    The EPA is correcting 40 CFR 98.233(q)(1)(v)(B) to add ``or Sec.  
60.5401b'' after ``Sec.  60.5400b'' to include both cross-references. 
This correction is consistent with the EPA's intent to update the cross 
references in the subpart W final rule to the NSPS OOOOb to include 40 
CFR 60.5401b for natural gas processing in 40 CFR 98.232(d)(7), 
98.233(q)(1)(v), 98.233(q)(1)(vii)(F), and 98.236(q)(1)(iv)(D), as 
stated in the preamble to the final rule (89 FR 42172, May 14, 2024). 
The cross-reference to 40 CFR 60.5401b was correct in the final rule 
redline-strikeout.
    The EPA is correcting 40 CFR 98.233(q)(1)(vii)(D) to add ``site, as 
defined in Sec.  98.238,'' after ``single well-pad'' to clarify what is 
considered a complete leak detection survey. The use of the term 
``well-pad site'' is consistent with the rest of the amendments in the 
final rule. In addition, the EPA stated in the preamble to the final 
rule (89 FR 42164, May 14, 2024) that for the Onshore Petroleum and 
Natural Gas Production industry segment, final 40 CFR 98.233(q)(1) 
specifies that a complete leak detection survey is a complete survey of 
all equipment on a single well-pad site. The reference to a ``single 
well-pad site, as defined in Sec.  98.238'' was correct in the final 
rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(q)(1)(vii)(G), the parameter 
``n'' of equation W-31 in 40 CFR 98.233(q)(2)(x)(A), and 40 CFR 
98.233(q)(3)(viii)(B) to replace incorrect cross-references to 
``paragraph (q)(1)(vii) of this section'' with the correct cross-
reference to ``paragraph (q)(1)(viii) of this section.'' 40 CFR 
98.233(q)(1)(vii)(G), the parameter ``n'' of equation W-31 in 40 CFR 
98.233(q)(2)(x)(A), and 40 CFR 98.233(q)(3)(viii)(B) all refer to 
provisions for complete leak surveys for natural gas distribution 
facilities electing to conduct surveys over multiple years. Multi-year 
surveys for natural gas distribution facilities are further addressed 
in 40 CFR 98.233(q)(1)(viii) and not in 40 CFR 98.233(q)(1)(vii). The 
EPA is also correcting 40 CFR 98.233(q)(3)(viii)(B) to replace a cross-
reference to non-existent ``paragraph (q)(3)(vii)(A) of this section'' 
with the correct cross-reference to ``paragraph (q)(3)(viii)(A) of this 
section.'' Natural gas distribution facilities are directed to use 
equation W-31 to determine the meter/regulator run population in 40 CFR 
98.233(q)(3)(viii)(A). In addition, table 3 of the preamble to the 
final rule indicates that in 40 CFR 98.233(q)(3)(viii)(B), the EPA 
intended to correct the internal cross reference from ``paragraph 
(q)(3)(vii)(A) of this section'' to ``paragraph (q)(3)(viii)(A) of this 
section'' (89 FR 42191, May 14, 2024). The cross references to 
``paragraph (q)(1)(viii) of this section'' and ``paragraph 
(q)(3)(viii)(A) of this section'' were correct in each of these 
sections in the final rule redline-strikeout.
    The EPA is correcting the cross-references in the parameter ``k'' 
of equation W-30 in 40 CFR 98.233(q)(2) and correcting 40 CFR 
98.233(q)(3)(vii) to replace cross-references to non-existent 
paragraphs ``Sec.  98.234(q)(1), (3) and (5),'' ``Sec.  
98.234(q)(2)(i),'' and ``Sec.  98.234(q)(2)(ii)'' with correct cross-
references to ``Sec.  98.234(a)(1), (3) and (5),'' ``Sec.  
98.234(a)(2)(i),'' and ``Sec.  98.234(a)(2)(ii),'' respectively. The 
``k'' term is the undetected leak factor specific to the leak detection 
method. The leak detection methods are in 40 CFR 98.234(a); 40 CFR 
98.234(q) does not exist. These cross-references were incorrect in the 
amendatory regulatory text of the Proposed Rule as well as the final 
rule redline-strikeout; however, both the preamble to the Proposed Rule 
and the preamble to the final rule clearly state that the adjustment 
factor k is screening method-specific, which supports the intent to 
cross-reference the screening methods. For example, the preamble to the 
final rule states at 89 FR 42163, May 14, 2024 that in order to account 
for the quantity of emissions that remain undetected by each screening 
method, we are finalizing as proposed to provide a method specific 
adjustment factor, k, for the calculation methods used to quantify 
emissions from equipment leaks using the leaker method in 40 CFR 
98.233(q). For all of these same reasons, the EPA is correcting similar 
language in the regulatory text that was effective July 15, 2024 (for 
Reporting Year 2024). Specifically, the EPA is correcting 40 CFR 
98.233(q)(3)(vii) to replace cross-references to non-existent 
paragraphs ``Sec.  98.234(q)(1), (3), and (5)'' ``Sec.  
98.234(q)(2)(i),'' and ``Sec.  98.234(q)(2)(ii)'' with correct cross-
references to ``Sec.  98.234(a)(1), (3), (5), and (6),'' ``Sec.  
98.234(a)(2),'' and ``Sec.  98.234(a)(7),'' respectively. The corrected 
cross-references reference the same screening methods as the 
corrections to the version of 40 CFR 98.233(q)(3)(vii) that will be 
effective January 1, 2025, but the specific cross-references are 
slightly different so that they correctly reference the methods in 40 
CFR 98.234(a) that are currently effective rather than the version of 
40 CFR 98.234(a) that will not be effective until January 1, 2025.
    The EPA is correcting the parameter ``GHGi'' of equation 
W-30 in 40 CFR 98.233(q)(2) to clarify that onshore natural gas 
transmission pipeline facilities should use the same default GHG 
concentrations as natural gas distribution facilities. The correct mole 
fractions for the onshore natural gas transmission pipeline industry 
segment

[[Page 71841]]

are specified in the final rule preamble at 89 FR 42091, May 14, 2024, 
where the EPA indicated that the addition of ``onshore natural gas 
transmission pipeline'' should be grouped with a methane concentration 
of 1 and a carbon dioxide concentration value of 0.011 in the variable 
``GHGi'' of equation W-32A in 40 CFR 98.233(r). While the preamble to 
the final rule did not specifically identify this as including changes 
to 40 CFR 98.233(q)(2), this is a conforming edit with the preamble 
statement. The revision to the parameter ``GHGi'' of 
equation W-30 in 40 CFR 98.233(q)(2) was correct in the final rule 
redline-strikeout.
    The EPA is correcting 40 CFR 98.233(q)(4)(i) to replace the 
incorrect cross-reference to ``paragraphs (q)(1)(i) through (v) of this 
section'' with the correct cross-references to ``paragraphs (q)(1)(i) 
through (vi) of this section'' in order for this cross-reference to 
include the onshore natural gas transmission pipeline facility 
components specified in 40 CFR 98.233(q)(1)(vi). The cross-reference to 
``paragraphs (q)(1)(i) through (vi) of this section'' was not correct 
in the final rule redline-strikeout. However, this correction 
appropriately includes a cross-reference for transmission pipeline 
facilities to use the provisions to develop a facility-specific 
emission factor in accordance with 40 CFR 98.233(q)(4). As discussed in 
the preamble to the final rule (89 FR 42088, May 14, 2024), in 
consideration of public comments concerning the equipment leak emission 
sources at transmission pipeline companies and consistent with CAA 
section 136(h), we finalized that transmission pipeline facilities can 
develop a facility-specific leaker factor in accordance with 40 CFR 
98.233(q)(4) using the leak measurements obtained in accordance with 40 
CFR 98.233(q)(3). Our intent for the facility-specific emission factor 
provisions to apply to transmission pipeline facilities is also made 
clear in 40 CFR 98.233(q)(2)(xii), which provides that transmission 
pipeline facilities must use the facility-specific leaker emission 
factor calculated in accordance with 40 CFR 98.233(q)(4) of this 
section.
    The EPA is correcting the parameters ``Es,MR,i'' and 
``CountMR'' of equation W-32B in 40 CFR 98.233(r) 
introductory text to replace incorrect cross-references to ``paragraph 
(q)(3)(vii)(B) of this section'' with the correct cross-references to 
``paragraph (q)(3)(viii)(B) of this section.'' These two variables are 
specific to emissions calculations for meter/regulator runs at above 
grade transmission-distribution transfer stations (Natural Gas 
Distribution industry segment). 40 CFR 98.233(q)(3)(viii)(B) is also 
specific to natural gas distribution, while 40 CFR 98.233(q)(3)(vii) is 
for the adjustment factor for undetected leaks (which is not specific 
to natural gas distribution). Further, 40 CFR 98.233(q)(3)(vii)(B) does 
not exist. The reference to a ``paragraph (q)(3)(viii)(B) of this 
section'' was correct in both parameters in the final rule redline-
strikeout.
    The EPA is correcting 40 CFR 98.233(s)(2)(i) to remove ``and 
report'' after ``calculate'' and before ``emissions'' to remove the 
reference to reporting emissions under 40 CFR 98.233 (``Calculating GHG 
emissions.''). This specific wording change was not discussed in the 
preamble to the final rule but the phrase ``and report'' was correctly 
not included in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.233(z)(2)(i)(B) to remove 
``CO2 content of'' after ``maximum'' and before ``higher 
heating value'' to delete extraneous text that was inadvertently not 
removed. This correction is consistent with the EPA's intent to 
finalize in 40 CFR 98.233(z)(2) that subpart C methodologies Tier 2 or 
higher may be used for fuel meeting the definition of ``natural gas'' 
in 40 CFR 98.238 if it has a minimum HHV of 950 Btu/scf, a maximum HHV 
of 1,100 Btu/scf, and a minimum CH4 content of 70 percent by 
volume, as stated in preamble to the final rule (89 FR 42179, May 14, 
2024). The phrase ``CO2 content of'' was correctly not 
included in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.236(b), 98.236(b)(5)(i)(A), 
98.236(c)(4)(vi), (vii), and (viii), and 98.236(e)(3)(vi) to replace 
instances of ``well-pad'' with the term ``well-pad site'' defined in 40 
CFR 98.238 for clarity in the reporting requirements. As the EPA stated 
in the preamble to the final rule (89 FR 42108, May 14, 2024), while 
the phrase ``well-pads'' generally refers to sites in the Onshore 
Petroleum and Natural Gas Production segment that would be considered a 
complete survey, we know there are cases when some pneumatic devices 
might not be on a well-pad but are still ``associated with a single 
well-pad'' (as defined in 40 CFR 98.238). In the preamble to the final 
rule, we noted that we finalized the use of the term ``well-pad site'' 
to ensure that the requirements to measure or monitor all pneumatic 
devices (or equipment leaks) at the site-level for facilities in the 
Onshore Petroleum and Natural Gas Production segment include such 
devices. We also clarified in the preamble to the final rule that the 
reporting requirements for sources that are not reported at the 
equipment level must be reported at the well-pad site level. The term 
``well-pad site'' was correctly included in each of these paragraphs in 
the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.236(b)(5)(ii)(C) to replace the 
reference to the non-existent parameter ``Tm.z'' in equation 
W-1C to Sec.  98.233 with the correct reference to 
``Tmal,z'' in equation W-1C to Sec.  98.233. While the 
equation parameter referenced in 40 CFR 98.236(b)(5)(ii)(C) was not 
correct in the final rule redline-strikeout, the term 
``Tmal,z'' is the correct parameter defined in equation W-
1C. The term ``Tm.z'' does not exist. The EPA is correcting 
this reporting element in the regulatory text that was effective July 
15, 2024 (for Reporting Year 2024) as well as the regulatory text that 
is effective January 1, 2025.
    The EPA is correcting 40 CFR 98.236(e)(1)(xvi)(C) to replace the 
incorrect cross-reference to ``paragraph (e)(4) of this section'' with 
the correct cross-reference to ``(e)(4).'' In the signed final rule, 
the Proposed Rule and the final rule redline-strikeout, the second 
cross-reference was to ``(e)(4)'' and was included in the phrase 
``according to Sec.  98.233(e)(1) and, if applicable, (e)(4).'' The 
EPA's intention was that ``Sec.  98.233'' applied to both cross-
references as it does in 40 CFR 98.236(e)(1)(xvi)(B) and 
(e)(3)(viii)(A) and (B), which all use the phrase ``according toSec.  
98.233(e)(1) and, if applicable, (e)(4)'' in the final rule. During 
preparation for publication, the reference to ``(e)(4)'' in 40 CFR 
98.236(e)(1)(xvi)(C) was erroneously revised to ``paragraph (e)(4) of 
this section''; 40 CFR 98.236(e)(4) is for reporting, not calculation. 
The corrected version restores the cross-reference as it appeared in 
the signed final rule, the Proposed Rule, and the final rule redline-
strikeout.
    The EPA is correcting 40 CFR 98.236(e)(3)(vii)(B) to replace the 
phrase ``from the flash tank'' with ``routed.'' This correction is 
consistent with the discussion in the preamble to the final rule (89 FR 
42124, May 14, 2024), in which the EPA noted that flash tanks are not 
applicable for desiccant dehydrators, the proposed reference to flash 
tanks in 40 CFR 98.236(e)(3)(vii)(B) was included in error, and the 
final reporting requirement in 40 CFR 98.236(e)(3)(vii)(B) does not 
include the proposed reference to flash tanks. The phrase ``routed'' 
was correctly included in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.236(e)(3)(viii)(A) to replace the

[[Page 71842]]

phrase ``non-flare combustion units'' with ``non-flare combustion 
unit'' to correct a grammatical error. This correction fixes a 
typographical error in the number agreement of this paragraph. The 
final rule redline-strikeout correctly uses the phrase ``non-flare 
combustion unit.''
    The EPA is correcting 40 CFR 98.236(l)(3)(iii) to replace the 
phrase ``tested well(s)'' with ``tested well'' for consistency with the 
requirement to report information in 40 CFR 98.236(l)(3) for each well 
tested. This correction fixes a typographical error in the number 
agreement of this paragraph. The correction to refer to a singular well 
is consistent with the requirement to report information in 40 CFR 
98.236(l)(3) for each well tested in the final rule. The final rule 
redline-strikeout correctly uses the phrase ``tested well'' in 40 CFR 
98.236(l)(3)(iii).
    The EPA is correcting 40 CFR 98.236(l)(4)(iv) to remove the 
requirement that reporting of the data element may only be delayed if 
the only wells that are tested in the same basin are wildcat wells and/
or delineation wells. This correction is consistent with the EPA's 
intent to finalize the reporting requirements for well testing to 
continue providing the option for the 2-year delay in reporting these 
data elements but to no longer require that all wells in the sub-basin 
be wildcat and/or delineation wells for reporters to be able to use the 
2-year delay, as stated in the preamble to the final rule (89 FR 42106, 
May 14, 2024). This provision is correct in the final rule redline-
strikeout.
    The EPA is correcting 40 CFR 98.236(m)(7)(iii) to replace the 
phrase ``continuous gas composition analyzers'' with ``a continuous gas 
composition analyzer'' to correct a grammatical error. The preamble to 
the final rule (89 FR 42137, May 14, 2024) uses the singular 
``analyzer'' when noting that the final reporting requirements in 40 
CFR 98.236(m)(7) include, as proposed, a requirement to indicate 
whether a continuous flow monitor was used to measure flow rates and a 
continuous composition analyzer was used to measure CH4 and 
CO2 concentrations. The phase ``a continuous gas composition 
analyzer'' is correctly included in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.236(n)(14) to replace the incorrect 
cross-reference to ``Sec.  98.233(n)(3)(i) or (ii)'' with the correct 
cross-reference to ``Sec.  98.233(n)(4)(i) or (ii).'' Final 40 CFR 
98.236(n)(14) requires reporting of the annual average mole fraction of 
CH4 in the feed gas to the flare. Final 40 CFR 98.233(n)(3) 
specifies methods for calculating flow rate while 40 CFR 98.233(n)(4) 
specifies methods for calculating composition. In the proposed 
regulatory text, 40 CFR 98.233(n)(3) specified methods for calculating 
composition, so the reference to 40 CFR 98.233(n)(3) in proposed 
98.236(n)(14) was correct, but that reference was not updated when the 
paragraphs in 40 CFR 98.233(n) were re-arranged between proposal and 
promulgation. The cross-reference to ``Sec.  98.233(n)(4)(i) or (ii)'' 
is correctly included in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.236(q)(2)(iv) to replace the 
incorrect reference to a ``site-specific emission factor'' with the 
correct reference to a ``facility-specific emission factor.'' In the 
preamble to the final rule (89 FR 42166, May 14, 2024), we stated that 
we were finalizing a change from proposal to the terminology of the 
emission factor from ``site-specific'' to ``facility-specific'' to 
better characterize the application of the developed emission factor, 
which is to be at the facility-level based on site-level measurement 
data for certain industry segments. This change is also consistent with 
changes from the proposed rule text to the final rule text made to 
other instances of ``site-specific'' to ``facility-specific'' in 40 CFR 
98.233(q)(4). The reference to a ``facility-specific emission factor'' 
is correctly included in the final rule redline-strikeout.
    The EPA is correcting 40 CFR 98.236(z)(2) to replace the less 
specific reference to ``natural gas meeting the criteria in Sec.  
98.233(z)'' with the specific reference to ``natural gas meeting the 
criteria in Sec.  98.233(z)(1) or (2) or a fuel meeting the criteria in 
Sec.  98.233(z)(3)'' to better clarify which reporting requirements are 
applicable. This correction is consistent with the preamble to the 
final rule (89 FR 42180, May 14, 2024), in which the EPA stated that 
the final amendments included a new reporting requirement in 40 CFR 
98.236(z)(2) specifically for RICE and GT that combust natural gas that 
meets the criteria of 40 CFR 98.233(z)(1) or (2) or a fuel meeting the 
specifications of 40 CFR 98.233(z)(3). The reference to a ``natural gas 
meeting the criteria in Sec.  98.233(z)(1) or (2) or a fuel meeting the 
criteria in Sec.  98.233(z)(3)'' is correctly included in the final 
rule redline-strikeout.
    Finally, the EPA is correcting 40 CFR 98.236(aa)(3) to add ``under 
the same e-GGRT identification number in the calendar year'' after 
``subpart NN of this part'' to clarify the requirements reporters must 
meet to no longer be required to report the quantities of natural gas 
received or NGLs received or leaving the gas processing plant. As the 
EPA stated in the preamble to the final rule (89 FR 42186, May 14, 
2024), the final reporting requirements in 40 CFR 98.236(aa)(3) specify 
that facilities that indicate that they both fractionate NGLs and 
report as a supplier under subpart NN under the same e-GGRT 
identification number and for the same calendar year would no longer be 
required to report the quantities of natural gas received or NGLs 
received or leaving the gas processing plant. The phrase ``under the 
same e-GGRT identification number in the calendar year'' is correctly 
included in the final rule redline-strikeout.
    Section 553(b)(B) of the APA, 5 U.S.C. 553(b)(B), provides that 
when an agency for good cause finds that public notice and comment 
procedures are impracticable, unnecessary, or contrary to the public 
interest, the agency may issue a rule without providing notice and an 
opportunity for public comment. The EPA has determined that there is 
good cause for making these technical corrections final without prior 
proposal. Such notice and opportunity for comment is unnecessary as the 
technical corrections are for minor typographical and other 
nonsubstantive errors made in preparing the amendatory regulatory text 
for the final rule or in preparing the signed final rule for 
publication, as explained in this preamble.

List of Subjects in 40 CFR Part 98

    Environmental protection, Administrative practice and procedure, 
Air pollution control, Greenhouse gases, Reporting and recordkeeping 
requirements.

Corrections

Corrections to the Amendments Effective January 1, 2025

    In FR Doc. 2024-08988 beginning on page 42062 in the Federal 
Register of Tuesday, May 14, 2024, the following corrections are made:
    1. Effective January 1, 2025, in Sec.  98.233:
    a. On page 42238, in the third column, paragraph (a)(2) 
introductory text is corrected to read:
    ``(2) Calculation Method 2. Except as provided in paragraph (a)(1) 
of this section, you may elect to measure the volumetric flow rate of 
each natural gas pneumatic device vent that vents directly to the 
atmosphere at your well-pad site, gathering and boosting site, or 
facility, as applicable, as specified in paragraphs (a)(2)(i) through 
(ix) of this

[[Page 71843]]

section. You must exclude the counts of devices measured according to 
paragraph (a)(1) of this section from the counts of devices to be 
measured or for which emissions are calculated according to the 
requirements in this paragraph (a)(2).''
    b. On page 42239, in the first column, paragraph (a)(2)(iii) 
introductory text is corrected to read:
    ``(iii) For all industry segments, determine the volumetric flow 
rate of each natural gas pneumatic device vent (in standard cubic feet 
per hour) using one of the methods specified in Sec.  98.234(b) through 
(d), as appropriate, according to the requirements specified in 
paragraphs (a)(2)(iii)(A) through (E) of this section. You must measure 
the emissions under conditions representative of normal operations, 
which excludes periods immediately after conducting maintenance on the 
device or manually actuating the device.''
    c. On page 42239, in the second column, paragraph (a)(2)(v)(A)(2) 
is corrected to read:
    ``(2) Confirm that the device is correctly characterized as a 
continuous high bleed pneumatic device according to the provisions in 
paragraph (a)(7) of this section. If the device type was 
mischaracterized, recharacterize the device type and use the 
appropriate methods in paragraph (a)(2)(v)(B) or (C) of this section, 
as applicable.''
    d. On page 42243, in the first column, (c)(1) introductory text is 
corrected to read:
    ``(1) Calculation method 1. If you have or elect to install a 
continuous flow meter that is capable of meeting the requirements of 
Sec.  98.234(b) on a supply line to natural gas driven pneumatic pumps, 
then for the period of the year when the natural gas supply line is 
dedicated to any one or more natural gas driven pneumatic pumps, and 
each of the pumps is vented directly to the atmosphere, you must use 
the applicable methods specified in paragraph (c)(1)(i) or (ii) of this 
section to calculate vented CH4 and CO2 emissions 
from those pumps.''
    e. On page 42243, in the third column, paragraph (c)(2)(ii) 
introductory text is corrected to read:
    ``(ii) Determine the volumetric flow rate of each natural gas 
driven pneumatic pump (in standard cubic feet per hour) using one of 
the methods specified in Sec.  98.234(b) through (d), as appropriate, 
according to the requirements specified in paragraphs (c)(2)(ii)(A) 
through (D) of this section. You must measure the emissions under 
conditions representative of normal operations, which excludes periods 
immediately after conducting maintenance on the pump.''
    f. On page 42245, beginning in the first column, paragraph (d) 
introductory text is corrected to read:
    ``(d) Acid gas removal unit (AGR) vents and Nitrogen removal unit 
(NRU) vents. For AGR vents (including processes such as amine, 
membrane, molecular sieve or other absorbents and adsorbents), 
calculate emissions for CH4 and CO2 vented 
directly to the atmosphere or emitted through a sulfur recovery plant, 
using any of the calculation methods described in paragraphs (d)(1) 
through (4) of this section, and also comply with paragraphs (d)(5) 
through (12) of this section, as applicable. For NRU vents, calculate 
emissions for CH4 vented directly to the atmosphere using 
any of the calculation methods described in paragraphs (d)(1) through 
(4) of this section, and also comply with paragraphs (d)(5) through 
(12) of this section, as applicable. If any AGR vents or NRU vents are 
routed to a flare, you must calculate CH4, CO2, 
and N2O emissions for the flare stack as specified in 
paragraph (n) of this section and report emissions from the flare as 
specified in Sec.  98.236(n). If any AGR vents or NRU vents are routed 
through an engine (e.g., permeate from a membrane or de-adsorbed gas 
from a pressure swing adsorber used as fuel supplement) (i.e., routed 
to combustion), you must calculate CH4, CO2, and 
N2O emissions as specified in subpart C of this part or as 
specified in paragraph (z) of this section, as applicable.''
    g. On page 42247, beginning in the first column, paragraph (e) 
introductory text is corrected to read:
    ``(e) Dehydrator vents. For dehydrator vents, calculate annual 
CH4 and CO2 emissions using the applicable 
calculation methods described in paragraphs (e)(1) through (5) of this 
section. For glycol dehydrators that have an annual average daily 
natural gas throughput that is greater than or equal to 0.4 million 
standard cubic feet per day, use Calculation Method 1 in paragraph 
(e)(1) of this section. For glycol dehydrators that have an annual 
average of daily natural gas throughput that is greater than 0 million 
standard cubic feet per day and less than 0.4 million standard cubic 
feet per day, use either Calculation Method 1 in paragraph (e)(1) of 
this section or Calculation Method 2 in paragraph (e)(2) of this 
section. If you are required to use a software program consistent with 
the requirements of paragraph (e)(1) of this section for compliance 
with Federal or state regulations, air permit requirements, or annual 
emissions inventory reporting for the current reporting year, you must 
use Calculation Method 1 to calculate annual CH4 and 
CO2 emissions. If emissions from dehydrator vents are routed 
to a vapor recovery system, you must calculate the emissions according 
to paragraph (e)(4) of this section. If emissions from dehydrator vents 
are routed to a regenerator firebox/fire tubes or to other non-flare 
combustion units, you must calculate CH4, CO2, 
and N2O annual emissions as specified in paragraph (e)(5) of 
this section. If any dehydrator vents are routed to a flare, you must 
calculate CH4, CO2, and N2O emissions 
for the flare stack as specified in paragraph (n) of this section and 
report emissions from the flare as specified in Sec.  98.236(n).''
    h. On page 42247, beginning in the third column, paragraph (e)(2) 
is corrected to read:
    ``(2) Calculation Method 2. Calculate annual volumetric emissions 
from glycol dehydrators using equation W-5 to this section, and then 
calculate the collective CH4 and CO2 mass 
emissions from the volumetric emissions using the procedures in 
paragraph (v) of this section:
[GRAPHIC] [TIFF OMITTED] TR04SE24.070

Where:

Es,i = Annual total volumetric GHG emissions (either 
CO2 or CH4) at standard conditions in cubic 
feet.
EFi = Population emission factors for glycol dehydrators 
in thousand standard cubic feet per dehydrator per year. Use 73.4 
for CH4 and 3.21 for CO2 at 60 [deg]F and 14.7 
psia.
Count = Total number of glycol dehydrators that have an annual 
average daily natural gas throughput that is greater than 0 million 
standard cubic feet per day and less than 0.4 million standard cubic 
feet per day for which you elect to use this Calculation Method 2.

[[Page 71844]]

1000 = Conversion of EFi in thousand standard cubic feet 
to standard cubic feet.''

    i. On page 42248, in the first column, paragraphs (e)(4) 
introductory text and (e)(4)(i) are corrected to read:
    ``(4) Emissions vented directly to atmosphere from dehydrators 
routed to a vapor recovery system, flare, or regenerator firebox/fire 
tubes. If the dehydrator(s) has a vapor recovery system, routes 
emissions to a flare, or routes emissions to a regenerator firebox/fire 
tubes and you use Calculation Method 1 or Calculation Method 2 in 
paragraph (e)(1) or (2) of this section, calculate annual emissions 
vented directly to atmosphere from the dehydrator(s) during periods of 
time when emissions were not routed to the vapor recovery system, 
flare, or regenerator firebox/fire tubes as specified in paragraphs 
(e)(4)(i) and (ii) of this section. If the dehydrator(s) has a vapor 
recovery system or routes emissions to a flare or other non-flare 
combustion unit and you use Calculation Method 3 in paragraph (e)(3) of 
this section, calculate annual emissions vented directly to atmosphere 
from the dehydrator(s) during periods of time when emissions were not 
routed to the vapor recovery system, flare, or other non-flare 
combustion unit as specified in paragraph (e)(4)(iii) of this section.
    ``(i) When emissions from dehydrator(s) are calculated using 
Calculation Method 1 or 2, calculate vented emissions as specified in 
paragraph (e)(1) or (2) of this section, which represents the emissions 
from the dehydrator prior to the vapor recovery system, flare, or 
regenerator firebox/fire tubes. Calculate an average hourly vented 
emissions rate by dividing the vented emissions by the number of hours 
that the dehydrator was in operation.''
    j. On page 42248, beginning in the second column, paragraph 
(e)(4)(iii) is corrected to read:
    ``(iii) When emissions from dehydrator(s) are calculated using 
Calculation Method 3, calculate total annual emissions vented directly 
to atmosphere from the dehydrator(s) during periods of time when 
emissions were not routed to the vapor recovery system, flare, or other 
non-flare combustion unit by determining of the number of 
depressurization events (including portions of an event) that vented to 
atmosphere based on engineering estimate and best available data. You 
must take into account periods with reduced capture efficiency of the 
vapor recovery system, flare, or other non-flare combustion unit. If 
emissions are routed to a flare but the flare is unlit, calculate 
emissions in accordance with the methodology specified in paragraph (n) 
of this section and report emissions from the flare as specified in 
Sec.  98.236(n).''
    k. On page 42248, in the third column, paragraph (e)(5) 
introductory text is corrected to read:
    ``(5) Combustion emissions from routing to regenerator firebox/fire 
tubes or other non-flare combustion unit. If any glycol dehydrator 
emissions are routed to a regenerator firebox/fire tubes, calculate 
emissions from these devices attributable to dehydrator flash tank 
vents or still vents as specified in paragraphs (e)(5)(i) through (iii) 
of this section. If any desiccant dehydrator emissions are routed to a 
non-flare combustion unit, calculate combusted emissions as specified 
in paragraphs (e)(5)(i) through (iii) of this section. If you operate a 
CEMS to monitor the emissions from the regenerator firebox/fire tubes 
or other non-flare combustion unit, calculate emissions as specified in 
paragraph (e)(5)(iv) of this section.''
    l. On page 42249, in the first column, paragraph (e)(5)(ii)(B) is 
corrected to read:
    ``(B) Measure the composition of the gas from the dehydrator(s) to 
the regenerator firebox/fire tubes or other non-flare combustion unit 
using a continuous composition analyzer. If you continuously measure 
gas composition, then those measured data must be used to calculate 
dehydrator emissions from the regenerator firebox/fire tubes or other 
non-flare combustion unit.''
    m. On page 42249, in the second column, paragraph (e)(5)(iv) is 
corrected to read:
    ``(iv) If you operate and maintain a CEMS that has both a 
CO2 concentration monitor and volumetric flow rate monitor 
for the combustion gases from the regenerator firebox/fire tubes or 
other non-flare combustion unit, you must calculate only CO2 
emissions for the regenerator firebox/fire tubes or other non-flare 
combustion unit. You must follow the Tier 4 Calculation Method and all 
associated calculation, quality assurance, reporting, and recordkeeping 
requirements for Tier 4 in subpart C of this part (General Stationary 
Fuel Combustion Sources). If a CEMS is used to calculate emissions from 
a regenerator firebox/fire tubes or other non-flare combustion unit, 
the requirements specified in paragraphs (e)(5)(ii) and (iii) of this 
section are not required.''
    n. On page 42250, beginning in the first column, paragraph 
(f)(1)(i)(B) is corrected to read:
    ``(B) Apply the average hourly flow rate calculated under paragraph 
(f)(1)(i)(A) of this section to each well in the same pressure group 
that have the same tubing diameter group, for the number of hours that 
each well is vented to the atmosphere.''
    o. On page 42258, beginning in the second column, paragraph 
(j)(4)(i)(C) is corrected to read:
    ``(C) During periods when a thief hatch is open and emissions from 
the tank are routed to a vapor recovery system or a flare, assume the 
capture efficiency of the vapor recovery system or a flare is 0 
percent. A thief hatch is open if it is fully or partially open such 
there is a visible gap between the hatch cover and the hatch portal. To 
calculate vented emissions during such periods, multiply the average 
hourly vented emissions rate determined in paragraph (j)(4)(i)(A) of 
this section by the number of hours that the thief hatch is open. 
Determine the number of hours that the thief hatch is open as specified 
in paragraph (j)(7) of this section.''
    p. On page 42258, beginning in the second column, paragraph 
(j)(5)(i) introductory text is corrected to read:
    ``(i) If a parametric monitor is operating on a controlled 
atmospheric pressure storage tank or gas-liquid separator, you must use 
data obtained from the parametric monitor to determine periods when the 
gas-liquid separator liquid dump valve is stuck in an open or partially 
open position. An applicable operating parametric monitor must be 
capable of logging data whenever a gas-liquid separator liquid dump 
valve is stuck in an open or partially open position, as well as when 
the gas-liquid separator liquid dump valve is subsequently closed. If 
an applicable parametric monitor is not operating, including during 
periods of time when the parametric monitor is malfunctioning, you must 
perform an audio, visual, and olfactory inspection of each gas-liquid 
separator liquid dump valve to determine if the valve is stuck in an 
open or partially open position, in accordance with paragraphs 
(j)(5)(i)(A) and (B) of this section.''
    q. On page 42259, in the first column, paragraph (j)(5)(i)(B) is 
corrected to read:
    ``(B) If stuck gas-liquid separator liquid dump valve is 
identified, the dump valve must be counted as being open since the 
beginning of the calendar year, or from the previous audio, visual, and 
olfactory inspection that did not identify the dump valve as being 
stuck in the open position in the same calendar year. If the dump valve 
is fixed following audio, visual, and olfactory inspection, the time 
period for which

[[Page 71845]]

the dump valve was stuck open will end upon being repaired. If a stuck 
dump valve is identified and not repaired, the time period for which 
the dump valve was stuck open must be counted as having occurred 
through the rest of the calendar year.''
    r. On page 42261, beginning in the first column, paragraphs 
(n)(1)(ii)(A) and (B) are corrected to read:
    ``(A) The requirements in Sec.  60.5412b(a)(1) of this chapter, 
along with the applicable testing requirements in Sec.  60.5413b(b) of 
this chapter, the applicable continuous compliance requirements in 
Sec.  60.5415b(f) of this chapter, and the applicable continuous 
monitoring requirements in Sec.  60.5417b of this chapter. You must 
also keep the applicable records in Sec.  60.5420b(c)(11) of this 
chapter.
    ``(B) The requirements in Sec.  60.5412b(a)(3) of this chapter, the 
applicable continuous compliance requirements in Sec.  60.5415b(f) of 
this chapter, and the applicable continuous monitoring requirements in 
Sec.  60.5417b of this chapter. You must also keep the applicable 
records in Sec.  60.5420b(c)(11) of this chapter.''
    s. On page 42268, beginning in the first column, paragraph 
(o)(6)(iii) is corrected to read:
    ``(iii) Using equation W-23 to this section, develop an emission 
factor for each compressor mode-source combination specified in 
paragraphs (o)(1)(i)(A) through (C) of this section. These emission 
factors must be calculated annually and used in equation W-22 to this 
section to determine volumetric emissions from a centrifugal compressor 
in the mode- source combinations that were not measured in the 
reporting year.
[GRAPHIC] [TIFF OMITTED] TR04SE24.071

    Where:

EFs,m = Reporter emission factor to be used in equation 
W-22 to this section for compressor mode-source combination m, in 
standard cubic feet per hour. The reporter emission factor must be 
based on all compressors measured in compressor mode-source 
combination m in the current reporting year and the preceding two 
reporting years.
MTs,m,p = Average volumetric gas emission measurement for 
compressor mode-source combination m, for compressor p, in standard 
cubic feet per hour, calculated using all volumetric gas emission 
measurements (MTs,m in equation W-21 to this section) for 
compressor mode-source combination m for compressor p in the current 
reporting year and the preceding two reporting years.
Countm = Total number of compressors measured in 
compressor mode-source combination m in the current reporting year 
and the preceding two reporting years.
m = Compressor mode-source combination specified in paragraph 
(o)(1)(i)(A), (B), or (C) of this section.''

    t. On page 42271, in the third column, paragraph (p)(4)(ii) is 
corrected to read:
    ``(ii) Determine the volumetric flow at standard conditions from 
the common stack using one of the methods specified in paragraphs 
(p)(4)(ii)(A) through (F) of this section.
    (A) A temporary meter such as a vane anemometer according to 
methods set forth in Sec.  98.234(b).
    (B) Calibrated bagging according to methods set forth in Sec.  
98.234(c).
    (C) A high volume sampler according to methods set forth in Sec.  
98.234(d).
    (D) [Reserved]
    (E) You may choose to use any of the methods set forth in Sec.  
98.234(a)(1) through (3) to screen for emissions. If emissions are 
detected using one of these specified methods, then you must use one of 
the methods specified in paragraphs (p)(4)(ii)(A) through (D) of this 
section. If emissions are not detected using the methods in Sec.  
98.234(a)(1) through (3), then you may assume that the volumetric 
emissions are zero. For the purposes of this paragraph, when using any 
of the methods in Sec.  98.234(a), emissions are detected whenever a 
leak is detected according to the method. Acoustic leak detection is 
only applicable for through-valve leakage and is not applicable for 
screening a manifolded group of compressor sources.
    (F) If one of the screening methods specified in Sec.  98.234(a)(1) 
through (3) identifies a leak in a manifolded group of reciprocating 
compressor sources, you may use acoustic leak detection, according to 
Sec.  98.234(a)(5), to identify the source of the leak. You must use 
one of the methods specified in paragraphs (p)(4)(ii)(A) through (D) of 
this section to quantify the emissions from the identified source.''
    u. On page 42275, in the second column, paragraph (q)(1)(v)(B) is 
corrected to read:
    ``(B) For the components listed in Sec.  98.232(d)(7) that are 
subject to the equipment leak standards for onshore natural gas 
processing plants in Sec.  60.5400b or Sec.  60.5401b of this chapter, 
or an applicable approved state plan or applicable Federal plan in part 
62 of this chapter, you must use either of the leak detection methods 
in Sec.  98.234(a)(1)(iii) or (a)(2)(ii).''
    v. On page 42275, in the third column, paragraph (q)(1)(vii)(D) is 
corrected to read:
    ``(D) For an onshore petroleum and natural gas production facility 
electing to conduct leak detection surveys according to paragraph 
(q)(1)(iv) of this section, a survey of all required components at a 
single well-pad site, as defined in Sec.  98.238, will be considered a 
complete leak detection survey for purposes of this section.''
    w. On page 42276, in the second column, paragraph (q)(1)(vii)(G) is 
corrected to read:
    ``(G) For natural gas distribution facilities that choose to 
conduct equipment leak surveys at all above grade transmission-
distribution transfer stations over multiple years as provided in 
paragraph (q)(1)(viii) of this section, a survey of all required 
components at the above grade transmission-distribution transfer 
stations monitored during the calendar year will be considered a 
complete leak detection survey for purposes of this section.''
    x. On page 42276, beginning in the first column, parameters ``k'' 
and ``GHGi'' of equation W-30 in paragraph (q)(2) 
introductory text are corrected to read:

``k = Factor to adjust for undetected leaks by respective leak 
detection method, where k equals 1.25 for the methods in Sec.  
98.234(a)(1), (3) and (5); k equals 1.55 for the method in Sec.  
98.234(a)(2)(i); and k equals 1.27 for the method in Sec.  
98.234(a)(2)(ii).
GHGi = For onshore petroleum and natural gas production 
facilities and onshore petroleum and natural gas gathering and 
boosting facilities, concentration of GHGi, 
CH4 or CO2, in produced natural gas as defined 
in paragraph (u)(2) of this section; for onshore natural gas 
processing facilities, concentration of GHGi, 
CH4 or CO2, in the total hydrocarbon of the 
feed natural gas; for

[[Page 71846]]

onshore natural gas transmission compression and underground natural 
gas storage, GHGi equals 0.975 for CH4 and 1.1 
x 10-2 for CO2 or concentration of 
GHGi, CH4 or CO2, in the total 
hydrocarbon of the feed natural gas; for LNG storage and LNG import 
and export equipment, GHGi equals 1 for CH4 
and 0 for CO2; and for natural gas distribution and 
onshore natural gas transmission pipeline, GHGi equals 1 
for CH4 and 1.1 x 10-2 for CO2.''

    y. On page 42277, in the second column, parameter ``n'' of equation 
W-31 in paragraph (q)(2)(x)(A) is corrected to read:

``n = Number of years of data, according to paragraph (q)(1)(viii) 
of this section, whose results are used to calculate emission factor 
``EFs,MR,i'' according to paragraph (q)(2)(x)(B) of this 
section.''

    z. On page 42278, in the second column, paragraph (q)(3)(vii) is 
corrected to read:
    ``(vii) Multiply the total CO2 and CH4 mass 
emissions by survey method and component type determined in paragraph 
(q)(3)(vi) of this section by the survey specific value for ``k'', the 
factor adjustment for undetected leaks, where k equals 1.25 for the 
methods in Sec.  98.234(a)(1), (3) and (5); k equals 1.55 for the 
method in Sec.  98.234(a)(2)(i); and k equals 1.27 for the method in 
Sec.  98.234(a)(2)(ii).''
    aa. On page 42278, in the third column, paragraph (q)(3)(viii)(B) 
is corrected to read:
    ``(B) If you chose to conduct equipment leak surveys at all above 
grade transmission-distribution transfer stations over multiple years, 
``n,'' according to paragraph (q)(1)(viii) of this section, you must 
use the meter/regulator run population emission factors calculated 
according to paragraph (q)(3)(viii)(A) of this section and the total 
count of all meter/regulator runs at above grade transmission-
distribution transfer stations to calculate emissions from all above 
grade transmission-distribution transfer stations using equation W-32B 
to this section.''
    bb. On page 42278, in the third column, paragraph (q)(4)(i) 
introductory text is corrected to read:
    ``(i) You must track the leak measurements made separately for each 
of the applicable components listed in paragraphs (q)(1)(i) through 
(vi) of this section and by the leak detection method according to the 
following three bins.''
    cc. On page 42279, in the first column, the parameter 
``Es,MR,i'' of equation W-32B in paragraph (r) introductory 
text is corrected to read:

``Es,MR,i = Annual volumetric emissions of 
GHGi from all meter/regulator runs at above grade 
metering regulating stations that are not above grade transmission-
distribution transfer stations or, when used to calculate emissions 
according to paragraph (q)(2)(xi) or (q)(3)(viii)(B) of this 
section, the annual volumetric emissions of GHGi from all 
meter/regulator runs at above grade transmission-distribution 
transfer stations.''

    dd. On page 42279, in the second column, the parameter 
``CountMR'' of equation W-32B in paragraph (r) introductory 
text is corrected to read:

CountMR = Total number of meter/regulator runs at above 
grade metering-regulating stations that are not above grade 
transmission-distribution transfer stations or, when used to 
calculate emissions according to paragraph (q)(2)(xi) or 
(q)(3)(viii)(B) of this section, the total number of meter/regulator 
runs at above grade transmission-distribution transfer stations.

    ee. On page 42280, in the third column, paragraph (s)(2)(i) is 
corrected to read:
    ``(i) Use the most recent monitoring and calculation methods 
published by BOEM as referenced in 30 CFR 550.302 through 304 to 
calculate annual emissions for any reporting year that overlaps with a 
BOEM emissions inventory year and any other reporting year in which the 
facility has the data needed to use BOEM's emissions calculation 
methods.''
    ff. On page 42284, in the second column, paragraph (z)(2)(i)(B) is 
corrected to read:
    ``(B) The natural gas must have a maximum higher heating value of 
1,100 Btu per standard cubic foot.''
    2. Effective January 1, 2025, in Sec.  98.236:
    a. On page 42295, in the third column, paragraph (b) introductory 
text is corrected to read:
    ``(b) Natural gas pneumatic devices. You must indicate whether the 
facility contains the following types of equipment: Continuous high 
bleed natural gas pneumatic devices, continuous low bleed natural gas 
pneumatic devices, and intermittent bleed natural gas pneumatic 
devices. If the facility contains any continuous high bleed natural gas 
pneumatic devices, continuous low bleed natural gas pneumatic devices, 
or intermittent bleed natural gas pneumatic devices, then you must 
report the information specified in paragraphs (b)(1) through (6) of 
this section, as applicable. You must report the information specified 
in paragraphs (b)(1) through (6) of this section, as applicable, for 
each well-pad site (for onshore petroleum and natural gas production), 
each gathering and boosting site (for onshore petroleum and natural gas 
gathering and boosting), or facility (for all other applicable industry 
segments).''
    b. On page 42297, in the first column, paragraph (b)(5)(i)(A) is 
corrected:
    ``(A) Indicate whether you measured emissions according to Sec.  
98.233(a)(3)(i)(A) or used default emission factors according to Sec.  
98.233(a)(3)(i)(B) to calculate emissions from your continuous high 
bleed and continuous low bleed natural gas pneumatic devices vented 
directly to the atmosphere at this well-pad site, gathering and 
boosting site, or facility, as applicable.''
    c. On page 42297, in the first column, paragraph (b)(5)(ii)(C) is 
corrected to read:
    ``(C) Average time the intermittent bleed natural gas pneumatic 
devices were in service (i.e., supplied with natural gas) and assumed 
to be malfunctioning in the calendar year (average value of 
``Tmal,z'' in equation W-1C to Sec.  98.233).''
    d. On page 42298, in the first column, paragraphs (c)(4)(vi) and 
(vii) are corrected to read:
    ``(vi) Annual CO2 emissions, in metric tons 
CO2, cumulative for all natural gas driven pneumatic pumps 
for which emissions were directly measured and calculated as specified 
in Sec.  98.233(c)(2)(ii) through (vi). Enter 0 if emissions from none 
of the natural gas driven pneumatic pumps at this well-pad site or 
gathering and boosting site were measured during the reporting year.
    ``(vii) Annual CH4 emissions, in metric tons 
CH4, cumulative for all natural gas driven pneumatic pumps 
for which emissions were directly measured and calculated as specified 
in Sec.  98.233(c)(2)(ii) through (vi). Enter 0 if emissions from none 
of the natural gas driven pneumatic pumps at this well-pad site or 
gathering and boosting site were measured during the reporting year.''
    e. On page 42298, beginning in the first column, paragraph 
(c)(4)(viii) is corrected to read:
    ``(viii) Annual CO2 emissions, in metric tons 
CO2, cumulative for all natural gas driven pneumatic pumps 
for which emissions were calculated according to Sec.  
98.233(c)(2)(vii)(B) through (D). Enter 0 if emissions from all natural 
gas driven pneumatic pumps at this well-pad site or gathering and 
boosting site were measured during the reporting year.''
    f. On page 42300, in the third column, paragraph (e)(1)(xvi)(C) is 
corrected to read:


[[Page 71847]]


    ``(C) Annual CH4 emissions, in metric tons 
CH4, from the flash tank when not routed to a flare or 
regenerator firebox/fire tubes, calculated according to Sec.  
98.233(e)(1) and, if applicable, (e)(4).''

    g. On page 42301, beginning in the third column, paragraph 
(e)(3)(vi) is corrected to read:
    ``(vi) For desiccant dehydrators at the facility, well-pad site, or 
gathering and boosting site identified in paragraph (e)(3)(ii) of this 
section, whether any dehydrator emissions were routed to a control 
device that reduces CO2 and/or CH4 emissions 
other than a vapor recovery system or a flare or a non-flare combustion 
unit. If any dehydrator emissions were routed to a control device that 
reduces CO2 and/or CH4 emissions other than a 
vapor recovery system or a flare or a non-flare combustion unit, then 
you must specify the type of control device(s) and the total number of 
dehydrators at the facility that were routed to each type of control 
device.''
    h. On page 42302, in the first column, paragraph (e)(3)(vii)(B) is 
corrected to read:
    ``(B) Total volume of gas routed to non-flare combustion units, in 
standard cubic feet.''
    i. On page 42302, in the first column, paragraph (e)(3)(viii)(A) is 
corrected to read:
    ``(A) Annual CO2 emissions, in metric tons 
CO2, for emissions from all desiccant dehydrators reported 
under paragraph (e)(3)(ii) of this section that are not venting to a 
flare or non-flare combustion unit, calculated according to Sec.  
98.233(e)(3) and, if applicable, (e)(4), and summing for all such 
dehydrators.''
    j. On page 42307, in the first column, paragraph (j)(1)(x)(F) is 
corrected to read:
    ``(F) The number of atmospheric pressure storage tanks in paragraph 
(j)(1)(x)(D) or (E) of this section that had an open thief hatch at 
some point during the year while the storage tank was also routing 
emissions to a vapor recovery system and/or a flare.''
    k. On page 42309, in the second column, paragraph (l)(3)(iii) is 
corrected to read:
    ``(iii) Number of well testing days for the tested well in the 
calendar year. You may delay reporting of this data element if you 
indicate in the annual report that the well is a wildcat well or 
delineation well. If you elect to delay reporting of this data element, 
you must report by the date specified in paragraph (cc) of this section 
the number of well testing days for the tested well.''
    l. On page 42309, in the third column, paragraph (l)(4)(iv) is 
corrected to read:
    ``(iv) Average annual production rate for the tested well, in 
actual cubic feet per day. You may delay reporting of this data element 
if you indicate in the annual report that the well is a wildcat well or 
delineation well. If you elect to delay reporting of this data element, 
you must report by the date specified in paragraph (cc) of this section 
the measured average annual production rate for the tested well.''
    m. On page 42310, in the second column, paragraph (m)(7)(iii) is 
corrected to read:

    ``(iii) Indicate whether associated gas streams vented from the 
well were measured with a continuous gas composition analyzer.''

    n. On page 42311, in the third column, paragraph (n)(14) is 
corrected to read:

    ``(14) Annual average mole fraction of CH4 in the 
feed gas to the flare if you measure composition of the inlet gas as 
specified in Sec.  98.233(n)(4)(i) or (ii) (``XCH4'' in 
equation W-19 to Sec.  98.233), or the annual average CH4 
mole fractions for each stream if you determine composition of each 
stream routed to the flare as specified in Sec.  
98.233(n)(4)(iii).''

    o. On page 42315, in the first column, paragraph (q)(2)(iv) is 
corrected to read:

    ``(iv) Emission factor or measurement method used (e.g., default 
emission factor; facility-specific emission factor developed 
according to Sec.  98.233(q)(4); or direct measurement according to 
Sec.  98.233(q)(3)).''

    p. On page 42317, beginning in the third column, paragraph (z)(2) 
introductory text is corrected to read:

    ``(2) Indicate whether the combustion units include: External 
fuel combustion units with a rated heat capacity greater than 5 
million Btu per hour; internal fuel combustion units that are not 
compressor-drivers, with a rated heat capacity greater than 1 
million Btu per hour (or the equivalent of 130 horsepower); or, 
internal fuel combustion units of any heat capacity that are 
compressor-drivers. For each type of combustion unit at your 
facility, you must report the information specified in paragraphs 
(z)(2)(i) through (iv) and (z)(2)(viii) through (x) of this section, 
except for internal fuel combustion units that are not compressor-
drivers, with a rated heat capacity greater than 1 million Btu per 
hour (or the equivalent of 130 horsepower) or internal fuel 
combustion units of any heat capacity that are compressor-drivers 
that combust natural gas meeting the criteria in Sec.  98.233(z)(1) 
or (2) or a fuel meeting the criteria in Sec.  98.233(z)(3), which 
must report the information specified in paragraphs (z)(2)(i) 
through (x) of this section. Information must be reported for each 
combustion unit type, fuel type, and method for determining the 
CH4 emission factor combination, as applicable.''

    q. On page 42318, in the third column, paragraph (aa)(3) 
introductory text is corrected to read:

    ``(3) For natural gas processing, if your facility fractionates 
NGLs and also reported as a supplier to subpart NN of this part 
under the same e-GGRT identification number in the calendar year, 
you must report the information specified in paragraphs (aa)(3)(ii) 
and (aa)(3)(v) through (ix) of this section. Otherwise, report the 
information specified in paragraphs (aa)(3)(i) through (ix) of this 
section.''

Correcting Amendments Effective October 4, 2024

    For reasons stated in the preamble, 40 CFR part 98 is amended by 
making the following correcting amendments:

PART 98--MANDATORY GREENHOUSE GAS REPORTING

0
1. The authority citation for part 98 continues to read as follows:

    Authority:  42 U.S.C. 7401-7671q.

0
2. Effective October 4, 2024, amend Sec.  98.233 by:
0
a. Revising paragraph (a)(3)(ii)(A);
0
b. Revising equations W-10A and W-10B of paragraph (g); and
0
c. Revising paragraph (q)(3)(vii).
    The revisions read as follows:


Sec.  98.233  Calculating GHG emissions.

* * * * *
    (a) * * *
    (3) * * *
    (ii) * * *
    (A) You must use one of the monitoring methods specified in Sec.  
98.234(a)(1) through (3), (6), and (7) except that the monitoring dwell 
time for each device vent must be at least 2 minutes or until a 
malfunction is identified, whichever is shorter. A device is considered 
malfunctioning if any leak is observed when the device is not actuating 
or if a leak is observed for more than 5 seconds, or the extended 
duration as specified in paragraph (a)(3)(ii)(C) of this section if 
applicable, during a device actuation. If you cannot tell when a device 
is actuating, any observed leak from the device indicates a 
malfunctioning device.
* * * * *
    (g) * * *

[[Page 71848]]

[GRAPHIC] [TIFF OMITTED] TR04SE24.072

* * * * *
    (q) * * *
    (3) * * *
    (vii) Multiply the total CO2 and CH4 mass 
emissions by survey method and component type determined in paragraph 
(q)(3)(vi) of this section by the survey specific value for ``k'', the 
factor adjustment for undetected leaks, where k equals 1.25 for the 
methods in Sec.  98.234(a)(1), (3), (5), and (6); k equals 1.55 for the 
method in Sec.  98.234(a)(2); and k equals 1.27 for the method in Sec.  
98.234(a)(7).
* * * * *

0
3. Effective October 4, 2024, amend Sec.  98.236 by revising paragraph 
(b)(5)(ii)(C) to read as follows


Sec.  98.236  Data reporting requirements.

* * * * *
    (b) * * *
    (5) * * *
    (ii) * * *
    (C) Average time the intermittent bleed natural gas pneumatic 
devices were in service (i.e., supplied with natural gas) and assumed 
to be malfunctioning in the calendar year (average value of 
``Tmal,z'' in equation W-1C to Sec.  98.233).
* * * * *

Joseph Goffman,
Assistant Administrator, Office of Air and Radiation.
[FR Doc. 2024-18933 Filed 9-3-24; 8:45 am]
BILLING CODE 6560-50-P