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Federal Register / Vol. 86, No. 24 / Monday, February 8, 2021 / Proposed Rules 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 12d 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 Clean Air Act;
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, the SIP is not approved to apply on any Indian reservation land or in any other area where EPA or an Indian tribe has demonstrated that a tribe has jurisdiction. In those areas of Indian country, the rule does not have tribal implications and will not impose substantial direct costs on tribal governments or preempt tribal law as specified by Executive Order 13175 65
FR 67249, November 9, 2000.
List of Subjects in 40 CFR Part 52
Environmental protection, Air pollution control, Carbon monoxide, Incorporation by reference, Intergovernmental relations, Lead, Nitrogen dioxide, Ozone, Particulate matter, Reporting and recordkeeping requirements, Sulfur oxides, Volatile organic compounds.
Dated: February 3, 2021.
Deborah Szaro, Acting Regional Administrator, EPA
Region 1.
FR Doc. 202102535 Filed 2521; 8:45 am BILLING CODE 656050P

ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52

jbell on DSKJLSW7X2PROD with PROPOSALS

Air Plan Approval; Pennsylvania; 1997
8-Hour Ozone National Ambient Air Quality Standards Second Maintenance Plan for the Tioga County Area Environmental Protection Agency EPA.
ACTION: Proposed rule.
AGENCY:

17:47 Feb 05, 2021

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Submit your comments, identified by Docket ID No. EPAR03
OAR20200321 at https
www.regulations.gov, or via email to spielberger.susan@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
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 e.g., 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 https www.epa.gov/dockets/
commenting-epa-dockets.
ADDRESSES:

Adam Yarina, Planning &
Implementation Branch 3AD30, Air &
Radiation Division, U.S. Environmental Protection Agency, Region III, 1650
Arch Street, Philadelphia, PA 19103.
The telephone number is 215 814
2108. Mr. Yarina can also be reached via electronic mail at yarina.adam@epa.gov.
On March 10, 2020, PADEP submitted a revision to the Pennsylvania SIP to incorporate a plan for maintaining the 1997 ozone NAAQS in the Tioga County Area through July 6, 2027, in accordance with CAA section 175A.

SUPPLEMENTARY INFORMATION:

The Environmental Protection Agency EPA is proposing to approve a state implementation plan SIP revision submitted by the Commonwealth of
VerDate Sep<11>2014

Written comments must be received on or before March 10, 2021.

DATES:

FOR FURTHER INFORMATION CONTACT:

EPAR03OAR20200321; FRL10016
97Region 3

SUMMARY:

Pennsylvania. This revision pertains to the Commonwealths plan, submitted by the Pennsylvania Department of Environmental Protection PADEP, for maintaining the 1997 8-hour ozone national ambient air quality standard NAAQS referred to as the 1997
ozone NAAQS in the Tioga County, Pennsylvania area Tioga County Area.
This action is being taken under the Clean Air Act CAA.

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I. Background In 1979, under section 109 of the CAA, EPA established primary and secondary NAAQS for ozone at 0.12
parts per million ppm, averaged over a 1-hour period. 44 FR 8202 February 8, 1979. On July 18, 1997 62 FR
38856,1 EPA revised the primary and secondary NAAQS for ozone to set the acceptable level of ozone in the ambient air at 0.08 ppm, averaged over an 8-hour period. EPA set the 1997 ozone NAAQS
based on scientific evidence demonstrating that ozone causes adverse health effects at lower concentrations and over longer periods of time than was understood when the pre-existing 1-hour ozone NAAQS was set.
Following promulgation of a new or revised NAAQS, EPA is required by the CAA to designate areas throughout the nation as attaining or not attaining the NAAQS. On April 30, 2004 69 FR
23857, EPA designated the Tioga County Area as nonattainment for the 1997 ozone NAAQS, effective June 15, 2004. The Tioga County Area consists solely of Tioga County in Pennsylvania.
Once a nonattainment area has three years of complete and certified air quality data that has been determined to attain the NAAQS, and the area has met the other criteria outlined in CAA
section 107d3E,2 the state can submit a request to EPA to redesignate the area to attainment. Areas that have been redesignated by EPA from nonattainment to attainment are referred to as maintenance areas. One of the criteria for redesignation is to have an approved maintenance plan under CAA
section 175A. The maintenance plan must demonstrate that the area will continue to maintain the standard for the period extending 10 years after redesignation, and it must contain such additional measures as necessary to ensure maintenance as well as contingency measures as necessary to assure that violations of the standard will be promptly corrected.
1 In March 2008, EPA completed another review of the primary and secondary ozone standards and tightened them further by lowering the level for both to 0.075 ppm. 73 FR 16436 March 27, 2008.
Additionally, in October 2015, EPA completed a review of the primary and secondary ozone standards and tightened them by lowering the level for both to 0.70 ppm. 80 FR 65292 October 26, 2015.
2 The requirements of CAA section 107d3E
include attainment of the NAAQS, full approval under section 110k of the applicable SIP, determination that improvement in air quality is a result of permanent and enforceable reductions in emissions, demonstration that the state has met all applicable section 110 and part D requirements, and a fully approved maintenance plan under CAA
section 175A.

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