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Federal Register / Vol. 86, No. 103 / Tuesday, June 1, 2021 / Proposed Rules
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. 1044;
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 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 CAA; and Does not provide the EPA with the discretionary authority to address disproportionate human health or environmental effects with practical, appropriate, and legally permissible methods under Executive Order 12898
59 FR 7629, February 16, 1994.
In addition, this proposed action does not have Tribal implications as specified by Executive Order 13175 65
FR 67249, November 9, 2000, because the SIP obligations discussed herein do not apply to Indian Tribes and thus this proposed action will not impose substantial direct costs on Tribal governments or preempt Tribal law.
Nonetheless, the EPA intends to notify the Cocopah and Fort Yuma Quechan tribes, which have lands within the Yuma NAA.
List of Subjects in 40 CFR Part 52

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Environmental protection, Air pollution control, Incorporation by reference, Intergovernmental relations, Particulate Matter, Pollution.
Authority: 42 U.S.C. 7401 et seq.
Dated: May 24, 2021.
Deborah Jordan, Acting Regional Administrator, Region IX.
FR Doc. 202111395 Filed 52821; 8:45 am BILLING CODE 656050P

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ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
EPAR03OAR20210017; FRL10023
69Region 3

Air Plan Approval; Maryland; Baltimore Area Base Year Inventory for the 2015
Ozone National Ambient Air Quality Standards Environmental Protection Agency EPA.
ACTION: Proposed rule.
AGENCY:

The Environmental Protection Agency EPA is proposing to approve a state implementation plan SIP revision submitted by the State of Maryland.
This revision consists of the base year inventory for the Baltimore, Maryland marginal nonattainment area Baltimore Area for the 2015 ozone national ambient air quality standards NAAQS.
This action is being taken under the Clean Air Act CAA.
DATES: Written comments must be received on or before July 1, 2021.
ADDRESSES: Submit your comments, identified by Docket ID No. EPAR03
OAR20210017 at https
www.regulations.gov, or via email to David.Talley@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 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 https www.epa.gov/dockets/
commenting-epa-dockets.
FOR FURTHER INFORMATION CONTACT:
Serena Nichols, Planning &
Implementation Branch 3AD30, Air &
SUMMARY:

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Radiation Division, U.S. Environmental Protection Agency, Region III, 1650
Arch Street, Philadelphia, Pennsylvania 19103. The telephone number is 215
8142053. Ms. Nichols can also be reached via electronic mail at Nichols.Serena@epa.gov.
SUPPLEMENTARY INFORMATION: On July 30, 2020, the Maryland Department of the Environment MDE, on behalf of the State of Maryland, submitted a revision to the Maryland SIP entitled, 2015 8Hour Ozone NAAQS 0.070 ppm Marginal Area State Implementation Plan for the Baltimore, MD
Nonattainment Area, SIP 2008. This SIP revision, referred to in this rulemaking action as the Baltimore base year inventory SIP, addresses the base year inventory requirement for the 2015 ozone NAAQS.
I. Background On October 1, 2015, EPA strengthened the 8-hour ozone NAAQS, lowering the level of the NAAQS from 0.075 ppm parts per million ppm to 0.070 ppm.
80 FR 65292 October 26, 2015.
Effective August 3, 2018, EPA
designated the Baltimore Area, consisting of Anne Arundel, Baltimore, Carroll, Harford, and Howard Counties and the City of Baltimore, all in Maryland, as marginal nonattainment for the 2015 ozone NAAQS. 83 FR
25776 June 4, 2018. CAA section 182a1 requires ozone nonattainment areas classified as marginal or above to submit a comprehensive, accurate, current inventory of actual emissions from all emissions sources in the nonattainment area, known as a base year inventory. The Baltimore base year inventory SIP addresses a base year inventory requirement for the Baltimore Area.
II. Summary of SIP Revision and EPA
Analysis A. EPAs Evaluation of the Baltimore Base Year Inventory SIP
EPAs review of Marylands base year inventory SIP for the Baltimore Area indicates that it meets the base year inventory requirements for the 2015
ozone NAAQS. As required by 40 CFR
51.1315a, MDE selected 2017 for the base year inventory, which is consistent with the baseline year for the reasonable further progress RFP plan because it is the year of the most recent triennial inventory. MDE included actual ozone season emissions, pursuant to 40 CFR
51.1315c.
EPA prepared a Technical Support Document TSD in support of this rulemaking. In that TSD, EPA reviewed the results, procedures, and
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