[Federal Register Volume 86, Number 44 (Tuesday, March 9, 2021)]
[Proposed Rules]
[Pages 13511-13514]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-04824]


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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 52

[EPA-R03-OAR-2020-0416; FRL-10021-12-Region 3]


Air Plan Approval; Pennsylvania; Regulatory Updates to 
Nonattainment New Source Review (NNSR) Permitting Requirements for 2012 
PM2.5 National Ambient Air Quality Standard (NAAQS)

AGENCY: Environmental Protection Agency (EPA).

ACTION: Proposed rule.

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SUMMARY: The Environmental Protection Agency (EPA) is proposing to 
approve a state implementation plan (SIP) revision submitted by the 
Commonwealth of Pennsylvania, on March 10, 2020. This revision pertains 
to the Pennsylvania Department of Environmental Protection Agency's 
(PADEP) amendments to 25 Pa. Code Chapters 121 (General Provisions) and 
127 (Construction, Modification, Reactivation and Operation of Sources) 
to implement Federal nonattainment new source review (NNSR) provisions 
for the 2012 annual fine particulate matter (PM2.5) national 
ambient air quality standard (NAAQS). This action is being taken under 
the Clean Air Act (CAA).

DATES: Written comments must be received on or before April 8, 2021.

ADDRESSES: Submit your comments, identified by Docket ID No. EPA-R03-
OAR-2020-0416 at https://www.regulations.gov, or via email to 
opila.marycate@epa.gov. For comments submitted at Regulations.gov, 
follow the online instructions for submitting comments. Once submitted, 
comments cannot be edited or removed from Regulations.gov. For either 
manner of submission, EPA may publish any comment received to its 
public docket. Do not submit electronically any information you 
consider to be confidential business information (CBI)

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or other information whose disclosure is restricted by statute. 
Multimedia submissions (audio, video, etc.) must be accompanied by a 
written comment. The written comment is considered the official comment 
and should include discussion of all points you wish to make. EPA will 
generally not consider comments or comment contents located outside of 
the primary submission (i.e. on the web, cloud, or other file sharing 
system). For additional submission methods, please contact the person 
identified in the FOR FURTHER INFORMATION CONTACT section. For the full 
EPA public comment policy, information about CBI or multimedia 
submissions, and general guidance on making effective comments, please 
visit http://www2.epa.gov/dockets/commenting-epa-dockets.

FOR FURTHER INFORMATION CONTACT: Amy Johansen, Permits Branch (3AD10), 
Air & Radiation Division, U.S. Environmental Protection Agency, Region 
III, 1650 Arch Street, Philadelphia, Pennsylvania 19103. The telephone 
number is (215) 814-2156. Ms. Johansen can also be reached via 
electronic mail at johansen.amy@epa.gov.

SUPPLEMENTARY INFORMATION: On March 10, 2020, the Commonwealth of 
Pennsylvania formally submitted a SIP revision to the Pennsylvania SIP. 
This SIP submission amends PADEP's 25 Pa. Code Chapters 121 (relating 
to general provisions) and 127, Subchapter E (relating to new source 
review). This proposed SIP revision establishes that emissions of 
volatile organic compounds (VOC) and ammonia are precursors to 
PM2.5 for new and modified major sources emitting 
PM2.5 in Pennsylvania nonattainment areas; establishes a 
significance level for PM2.5; proposes emission offset 
ratios for emissions of VOC and ammonia as PM2.5 precursors; 
and amends relevant definitions. The relevant PADEP regulations were 
adopted by PADEP and became effective upon publication on December 21, 
2019.
    For more information related to EPA's proposed approval of this SIP 
revision, please refer to EPA's Technical Support Document (TSD), 
located in Docket ID No. EPA-R03-OAR-2020-0416 at https://www.regulations.gov.

I. Background

A. 2012 PM2.5 NAAQS

    Airborne particulate matter with a nominal aerodynamic diameter of 
2.5 micrometers or less are ``fine particles,'' and are also known as 
PM2.5. See 77 FR 44198 (July 27, 2012). Fine particles in 
the atmosphere are made up of a complex mixture of components, 
including sulfate, nitrate, ammonium, elemental carbon, organic 
compounds, and inorganic material. There are substantial health effects 
associated with exposure to PM2.5 emissions. Epidemiological 
studies have shown a significant correlation between elevated 
PM2.5 levels and premature mortality. Other important health 
effects associated with PM2.5 exposure include aggravation 
of respiratory and cardiovascular disease, lung disease, decreased lung 
function, asthma attacks, and certain cardiovascular problems. 
Individuals particularly sensitive to PM2.5 exposure include 
older adults, people with heart and lung disease, and children. See 70 
FR 65984 (November 1, 2005).
    EPA has revised the NAAQS for PM2.5 on multiple 
occasions, most recently in 2012. On December 14, 2012, the annual 
primary standard for PM2.5 was lowered from 15 micrograms 
per meter cubed ([mu]g/m\3\) to 12 [mu]g/m\3\. See 78 FR 3087 (January 
15, 2013). The existing 24-hour standards (primary and secondary) were 
retained at 35 [mu]g/m\3\, as was the annual secondary standard of 15 
[mu]g/m\3\. Upon promulgation of the 2012 PM2.5 NAAQS, EPA 
formally classified all of Delaware County and Lebanon County, 
Pennsylvania as moderate nonattainment for the 2012 annual 
PM2.5 standard. See 80 FR 2206 (January 15, 2015).\1\
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    \1\ EPA subsequently issued Additional Air Quality Designations 
and Technical Amendment to Correct Inadvertent Error in Air Quality 
Designations for the 2012 Primary Annual Fine Particle 
(PM2.5), which impacted Delaware and Lebanon counties. 80 
FR 18535, 18549 (April 7, 2015).
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B. Purpose of SIP Revision

    For areas designated as nonattainment for one or more NAAQS, the 
SIP must include preconstruction permit requirements for new or 
modified major stationary sources of such nonattainment pollutant(s), 
commonly referred to as ``Nonattainment New Source Review.'' See CAA 
section 172(c)(5).
    PADEP's SIP revision revises NNSR permit requirements for major 
sources of PM2.5. Specifically, PADEP's 25 Pa. Code Chapters 
121 and 127 have been amended to implement additional provisions 
pertaining to PM2.5 precursors, as promulgated in EPA's rule 
entitled Fine Particulate Matter National Ambient Air Quality 
Standards: State Implementation Plan Requirements (2016 Implementation 
Rule). 81 FR 58010 (August 24, 2016).
    As required by EPA's 2016 Implementation Rule, which implements the 
D.C. Circuit court's January 2013 decision in NRDC v. EPA,\2\ areas 
classified as nonattainment for any PM2.5 NAAQS are required 
to comply with the parts of CAA subpart 4 section 189(e) \3\ that 
require the control of major sources of PM10 precursors (and 
hence under the court decision, PM2.5 precursors) ``except 
where the Administrator determines that such sources do not contribute 
significantly to PM10 levels which exceed the standard in 
the area.'' The 2016 Implementation Rule amended the definitions of (1) 
``regulated NSR pollutant'' with regard to PM2.5 precursors; 
(2) ``major stationary source'' with regard to major sources of direct 
PM2.5 emissions and PM2.5 precursors locating in 
PM2.5 nonattainment areas classified as moderate and 
serious; and (3) ``significant'' with regard to emissions of direct 
PM2.5 and its precursors.
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    \2\ 706 F.3d 428 (D.C. Cir. 2013).
    \3\ This requirement was codified in 40 CFR 51.165(a)(13). See 
81 FR 58010 (August 24, 2016).
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C. EPA's Findings of Failure To Submit

    On April 6, 2018, EPA issued its final Findings of Failure to 
Submit PM2.5 SIP revisions (Findings) to three states, 
including Pennsylvania. See 83 FR 14759. EPA's Findings apply to states 
with overdue SIP revisions for areas initially designated as 
nonattainment and classified as moderate for the 2012 PM2.5 
NAAQS on April 15, 2015, which included both Delaware and Lebanon 
County, Pennsylvania. In its Findings, EPA found that Pennsylvania 
failed to submit a timely revision to their SIP as required to satisfy 
CAA requirements for implementation of the 2012 PM2.5 NAAQS 
for those counties.
    Specific to this rulemaking is PADEP's remedying its previous 
failure to submit revisions to its NNSR requirements related to the 
2012 PM2.5 NAAQS. PADEP was required to submit its NNSR SIP 
revision to EPA for approval by October 15, 2016. See 83 FR 14759 
(April 6, 2018). PADEP did not meet this deadline, hence EPA's issuance 
of its April 6, 2018 Findings, which became effective as of May 7, 
2018. As a result of EPA's Findings, PADEP was given 18 months after 
the effective date of EPA's Findings to submit all applicable moderate 
area requirements or the imposition of sanctions would occur for the 
affected moderate 2012 PM2.5 nonattainment area, the 
Delaware County and Lebanon County, Pennsylvania nonattainment 
areas.\4\ This proposed SIP revision

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updates PADEP's regulations to include the required PM2.5 
NNSR provisions in response to EPA's 2016 Implementation Rule 
requirements. See 81 FR 58010 (August 24, 2016) and 40 CFR 51.165.
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    \4\ Because EPA's April 6, 2018 Findings became effective on May 
7, 2018, the 18-month sanctions clock for PADEP to submit its NNSR 
SIP revision ended on November 7, 2019.
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    As a result of EPA's Findings, Pennsylvania was required to either 
submit and obtain EPA approval of redesignation requests for the 2012 
PM2.5 standard, or to submit a complete SIP submission 
addressing PM2.5 precursors under NNSR. These rulemaking 
actions were required to be submitted to EPA by November 7, 2019 to 
avoid mandatory sanctions under CAA section 179. After it issued its 
Findings, EPA subsequently redesignated both Lebanon and Delaware 
County, Pennsylvania to attainment for the 2012 PM2.5 NAAQS, 
which became effective on October 30, 2019. 84 FR 51420 (September 30, 
2019, effective on October 30, 2019). As stated in our redesignation 
document, EPA's redesignation nullified the failure to submit findings 
and stopped the sanctions clock.
    However, in addition to PADEP submitting redesignation requests 
(now approved by EPA), it also drafted regulatory provisions in 
response to EPA's Final 2016 Implementation Rule, as it relates to 
NNSR.\5\ On March 10, 2020, PADEP submitted those regulatory changes to 
EPA for approval into the Pennsylvania SIP.
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    \5\ See 84 FR 51420 (September 30, 2019, effective on October 
30, 2019).
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II. Summary of SIP Revision and EPA Analysis

A. Summary of SIP Revision

    PADEP's Environmental Quality Board (EQB) adopted changes to 25 Pa. 
Code Chapters 121 and 127 and those changes became effective upon 
publication in the Pennsylvania Bulletin on December 21, 2019. PADEP 
submitted those changes as a SIP revision to EPA for inclusion in the 
Pennsylvania SIP on March 10, 2020, via the EPA State Planning 
electronic Collaboration System (SPeCS).
    For areas designated as nonattainment for one or more NAAQS, the 
SIP must include preconstruction permit requirements for new or 
modified major stationary sources of such nonattainment pollutant(s), 
commonly referred to as NNSR. CAA 172(c)(5). PADEP's 25 Pa. Code 
Chapters 121 and 127 address NNSR permit requirements for major sources 
of PM2.5, as amended, to implement additional provisions 
pertaining to precursors, as promulgated in EPA's final 2016 
Implementation Rule.\6\
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    \6\ See 81 FR 58010 (August 24, 2016).
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B. EPA's Analysis

    For additional information related to EPA's analysis of revisions 
to 25 Pa. Code, please refer to Section 6 of EPA's TSD, located in 
Docket ID No. EPA-R03-OAR-2020-0416 at https://www.regulations.gov.
    Under EPA's 2016 Implementation Rule, which in part implements the 
D.C. Circuit Court's January 2013 decision in NRDC v. EPA,\7\ areas 
classified as nonattainment for any PM2.5 NAAQS are required 
to comply with the parts of CAA subpart 4 section 189(e) \8\ that 
require the control of major stationary sources of PM10 
precursors (and hence under the court decision, PM2.5 
precursors) ``except where the Administrator determines that such 
sources do not contribute significantly to PM10 levels which 
exceed the standard in the area.'' As mentioned previously, the 2016 
Implementation Rule amended the definitions of (1) ``regulated NSR 
pollutant'' with regard to PM2.5 precursors; (2) ``major 
stationary source'' with regard to major sources of direct 
PM2.5 emissions and PM2.5 precursors locating in 
PM2.5 nonattainment areas classified as moderate and 
serious; and (3) ``significant'' with regard to emissions of direct 
PM2.5 and its precursors. 25 Pa. Code Chapters 121 (General 
Provisions) and 127 (Construction, Modification, Reactivation and 
Operation of Sources); specifically, Subchapter E (related to new 
source review) are subject to these new regulatory requirements. 
Delaware County and Lebanon County, Pennsylvania were classified as 
moderate nonattainment areas for the 2012 PM2.5 NAAQS.\9\ 
The major source permitting threshold for a moderate PM2.5 
nonattainment area is 100 tons per year (tpy) of direct 
PM2.5 or any PM2.5 precursor, and 70 tpy for a 
serious PM2.5 nonattainment area.\10\
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    \7\ 706 F.3d 428 (D.C. Cir. 2013).
    \8\ This requirement was codified in 40 CFR 51.165(a)(13). See 
81 FR 58010 (August 24, 2016).
    \9\ On January 15, 2015, EPA designated all of Delaware County 
and Lebanon County as moderate nonattainment for the 2012 annual 
PM2.5 standard. See 80 FR 2206 (January 15, 2015).
    \10\ While Delaware County and Lebanon County were not 
classified as serious nonattainment areas for the PM2.5 
NAAQS, PADEP has revised 25 Pa. Code to include the lower emissions 
threshold of 70 tpy for direct PM2.5 and all four 
PM2.5 precursors.
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    As more fully discussed in Section 6 of the TSD for this proposed 
approval, EPA evaluated the revised portions of 25 Pa. Code Chapters 
121 (General Provisions) and 127 (Construction, Modification, 
Reactivation and Operation of Sources); specifically, Sections 121.1 
(Definitions) and Subchapter E (related to new source review) 127.202, 
127.203(a), and 127.210(a) (relating to Effective date, Facilities 
subject to special permit requirements, and Offset ratios, 
respectively) to determine if the revisions meet current applicable 
requirements for a PM2.5 NNSR permit program. 25 Pa. Code 
121.1--(1) contains revisions to clarify that 25 Pa. Code applies to 
major polluting facilities that will emit PM2.5 or its 
precursors in areas designated as nonattainment for PM2.5; 
(2) the definition of ``major facility'' has been updated to include a 
70 tpy emissions threshold for PM2.5 and all precursors to 
PM2.5 in a serious nonattainment area; (3) the definition of 
``regulated NSR pollutant'' has been updated to include sulfur dioxide 
(SO2), VOC, and ammonia in all PM2.5 
nonattainment areas; (4) revisions were made to the definition of 
``significant'' to include emission rates for PM2.5 at 10 
tpy and emission rates for PM2.5 precursors as follows: 40 
tpy of SO2, 40 tpy of VOC, 40 tpy of ammonia, and 40 tpy of 
nitrogen oxides (NOX). EPA finds these revisions approvable. 
Section 127.202(a)--Effective date, was amended to establish that 
emission of VOC and ammonia will be regulated as PM2.5 
precursors after the effective date of the adoption of the proposed 
rulemaking. The proposed amendments to 25 Pa. Code Chapters 121 and 
127, became effective December 21, 2019. Section 127.203(a)--Facilities 
subject to special permit requirements, was amended to add 
``significant air quality impact'' levels for PM2.5 at 
0.2[mu]g/m\3\ for the annual averaging time and 1.2 [mu]g/m\3\ for the 
24-hour averaging time. PADEP's annual averaging time is more stringent 
than what EPA requires in 40 CFR 51.165(b)(2), therefore, EPA finds 
this more stringent requirement approvable. Section 127.210(a)--Offset 
ratios, establishes offset ratios for VOC and ammonia at a ratio of 1:1 
for flue emissions and fugitive emissions. EPA finds the addition of 
offset ratios to be approvable.

III. Proposed Action

    EPA's review of this material indicates that PADEP's March 10, 2020 
SIP submittal is approvable and meets the requirements of 40 CFR 51.165 
and are in accordance with CAA section 110. EPA is proposing to approve 
the March 10, 2020 submittal, which included revisions to 25 Pa. Code 
Chapters 121 (General Provisions) and 127 (Construction, Modification, 
Reactivation and Operation of Sources), as a revision to the 
Pennsylvania SIP. EPA is soliciting public comments on the issues 
discussed in this document.

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These comments will be considered before taking final action.

IV. Incorporation by Reference

    In this document, EPA is proposing to include in a final EPA rule 
regulatory text that includes incorporation by reference. In accordance 
with requirements of 1 CFR 51.5, EPA is proposing to incorporate by 
reference certain subsections of 25 Pa. Code Chapters 121 (General 
Provisions) and 127 (Construction, Modification, Reactivation and 
Operation of Sources) as identified and discussed in Section II of this 
preamble.
    EPA has made, and will continue to make, these materials generally 
available through https://www.regulations.gov and at the EPA Region III 
Office (please contact the person identified in the For Further 
Information Contact section of this preamble for more information).

V. Statutory and Executive Order Reviews

    Under the CAA, the Administrator is required to approve a SIP 
submission that complies with the provisions of the CAA and applicable 
Federal regulations. 42 U.S.C. 7410(k); 40 CFR 52.02(a). Thus, in 
reviewing SIP submissions, EPA's role is to approve state choices, 
provided that they meet the criteria of the CAA. Accordingly, this 
action merely approves state law as meeting Federal requirements and 
does not impose additional requirements beyond those imposed by state 
law. For that reason, this proposed action:
     Is not a ``significant regulatory action'' subject to 
review by the Office of Management and Budget under Executive Orders 
12866 (58 FR 51735, October 4, 1993) and 13563 (76 FR 3821, January 21, 
2011);
     Is not an Executive Order 13771 (82 FR 9339, February 2, 
2017) regulatory action because it is not a significant regulatory 
action under Executive Order 12866;
     Does not impose an information collection burden under the 
provisions of the Paperwork Reduction Act (44 U.S.C. 3501 et seq.);
     Is certified as not having a significant economic impact 
on a substantial number of small entities under the Regulatory 
Flexibility Act (5 U.S.C. 601 et seq.);
     Does not contain any unfunded mandate or significantly or 
uniquely affect small governments, as described in the Unfunded 
Mandates Reform Act of 1995 (Pub. L. 104-4);
     Does not have Federalism implications as specified in 
Executive Order 13132 (64 FR 43255, August 10, 1999);
     Is not an economically significant regulatory action based 
on health or safety risks subject to Executive Order 13045 (62 FR 
19885, April 23, 1997);
     Is not a significant regulatory action subject to 
Executive Order 13211 (66 FR 28355, May 22, 2001);
     Is not subject to requirements of Section 12(d) of the 
National Technology Transfer and Advancement Act of 1995 (15 U.S.C. 272 
note) because application of those requirements would be inconsistent 
with the CAA; and
     Does not provide EPA with the discretionary authority to 
address, as appropriate, disproportionate human health or environmental 
effects, using practicable and legally permissible methods, under 
Executive Order 12898 (59 FR 7629, February 16, 1994).
    In addition, this proposed rulemaking, pertaining to Pennsylvania's 
NNSR requirements under the 2012 PM2.5 NAAQS, does not have 
tribal implications as specified by Executive Order 13175 (65 FR 67249, 
November 9, 2000), because the SIP is not approved to apply in Indian 
country located in the state, and EPA notes that it will not impose 
substantial direct costs on tribal governments or preempt tribal law.

List of Subjects in 40 CFR Part 52

    Environmental protection, Air pollution control, Incorporation by 
reference, Intergovernmental relations, Nitrogen dioxide, Particulate 
matter, Reporting and recordkeeping requirements, Sulfur oxides, 
Volatile organic compounds.

    Dated: March 3, 2021.
Diana Esher,
Acting Regional Administrator, Region III.
[FR Doc. 2021-04824 Filed 3-8-21; 8:45 am]
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