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Federal Register / Vol. 86, No. 167 / Wednesday, September 1, 2021 / Rules and Regulations that required a source-specific RACT
determination or alternative NOX
emissions limits for major sources seeking such limits.
In PADEPs case-by-case RACT
determinations, an evaluation was completed to determine if previously SIP-approved, case-by-case RACT
emission limits or operational controls herein referred to as RACT I and contained in RACT I permits were more stringent than the new RACT II
presumptive or case-by-case requirements. If more stringent, the
RACT I requirements will continue to apply to the applicable source. If the new case-by-case RACT II requirements are more stringent than the RACT I
requirements, then the RACT II
requirements will supersede the prior RACT I requirements.3
In PADEPs RACT determinations involving NOX averaging, an evaluation was completed to determine that the aggregate NOX emissions emitted by the air contamination sources included in the facility-wide or system-wide NOX
emissions averaging plan using a 30-day
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rolling average are not greater than the NOX emissions that would be emitted by the group of included sources if each source complied with the applicable presumptive limitation in 25 Pa. Code 129.97 on a source-specific basis.
Here, EPA is taking action on SIP
revisions pertaining to case-by-case RACT requirements and alternative NOX
emissions limits for eight major sources of NOX and/or VOC in Pennsylvania, as summarized in Table 1 in this document.4

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TABLE 1EIGHT MAJOR NOX AND/OR VOC SOURCES IN PENNSYLVANIA SUBJECT TO CASE-BY-CASE RACT II
DETERMINATIONS UNDER THE 1997 AND 2008 8-HOUR OZONE NAAQS
Major source county
1-hour ozone RACT
source?
RACT I

Major source pollutant NOX and/or VOC

Volvo Construction Equipment North America Franklin
National Fuel Gas Supply CorporationRoystone Compressor Station Warren.
E.I DuPont de Nemours and Co. Bradford
Carmeuse Lime Inc. Lebanon
Kovatch Mobile Equipment Corp. Carbon
Merck, Sharpe & Dohme Corp. formerly Merck and Co., Inc.
West Point Facility Montgomery.
Letterkenny Army Depot formerly Department of the Army Franklin.
Fairless Energy, LLC Bucks

No
Yes

VOC
NOX and VOC

2805012 6/1/2019
62141H 1/16/2018

Yes
Yes
No
Yes

NOX and VOC
NOX
VOC
NOX and VOC

0800002 9/28/2018
3805003 3/6/2019
1300008 10/27/2017
4600005 1/5/2017

Yes

VOC

2805002 6/1/2018

No

NOX and VOC

0900124 12/6/2016

The case-by-case RACT
determinations submitted by PADEP
consist of an evaluation of all reasonably available controls at the time of evaluation for each affected emissions unit, resulting in a PADEP
determination of what specific emission limit or control measures satisfy RACT
for that particular unit. The adoption of new, additional, or revised emission limits or control measures to existing SIP-approved RACT I requirements were specified as requirements in new or revised Federally enforceable permits hereafter RACT II permits issued by PADEP to the source. Similarly, PADEPs determinations of alternative NOX emissions limits are included in RACT II permits. These RACT II permits have been submitted as part of the Pennsylvania RACT SIP revisions for EPAs approval in the Pennsylvania SIP
under 40 CFR 52.2020d1. The RACT
II permits submitted by PADEP are listed in the last column of Table 1, along with the permit effective date, and are part of the docket for this rule, which is available online at https

www.regulations.gov, Docket No. EPA
R03OAR20200597.5 EPA is incorporating by reference in the Pennsylvania SIP, via the RACT II
permits, source-specific RACT emission limits and control measures and alternative NOX emissions limits under the 1997 and 2008 8-hour ozone NAAQS for certain major sources of NOX and VOC emissions.

3 While the prior SIP-approved RACT I permit will remain part of the SIP, this RACT II rule will incorporate by reference the RACT II requirements through the RACT II permit and clarify the ongoing applicability of specific conditions in the RACT I
permit.

4 PADEPs March 9, 2020 package of SIP revisions included source-specific RACT II determinations for sources at nine facilities. As indicated in the proposed rulemaking, EPA is only acting on eight of these facilities at this time. EPA will be acting on sources located at the Montour, LLC facility in a separate future rulemaking.

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B. EPAs Final Action PADEPs SIP revisions incorporate its determinations of source-specific RACT
II controls for individual emission units at major sources of NOX and/or VOC in Pennsylvania, where those units are not covered by or cannot meet Pennsylvanias presumptive RACT
regulation or where included in a NOX
emissions averaging plan. After thorough review and evaluation of the information provided by PADEP in its SIP revision submittals for sources at eight major NOX and/or VOC emitting facilities in Pennsylvania, EPA found that: 1 PADEPs case-by-case RACT
determinations and conclusions
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RACT II permit effective date
establish limits and/or controls on individual sources that are reasonable and appropriately considered technically and economically feasible controls 2 PADEPs determinations on alternative NOX emission limits demonstrate that emissions under the averaging plan are equivalent to emissions if the individual sources were operating in accordance with the applicable presumptive limit, and 3
PADEPs determinations are consistent with the CAA, EPA regulations, and applicable EPA guidance.
PADEP, in its RACT II
determinations, considered the prior source-specific RACT I requirements and, where more stringent, retained those RACT I requirements as part of its new RACT determinations. In the NPRM, EPA proposed to find that all the proposed revisions to previously SIPapproved RACT I requirements would result in equivalent or additional reductions of NOX and/or VOC
emissions. The proposed revisions should not interfere with any applicable requirements concerning attainment of 5 The RACT II permits included in the docket for this rulemaking are redacted versions of the facilities Federally enforceable permits. They reflect the specific RACT requirements being approved into the Pennsylvania SIP via this final action.

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