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Federal Register / Vol. 86, No. 97 / Friday, May 21, 2021 / Rules and Regulations
The Coast Guard will enforce the safety zone regulations in 33 CFR 165.1123 for the Big Bay Boom Fourth of July Fireworks regulated area from 8 p.m. until 10 p.m.
on July 4, 2021. This action is being taken to provide for the safety of life on navigable waterways during the fireworks event. Our regulation for Southern California Annual Firework Events for the San Diego Captain of the Port Zone, 165.1123, identifies the regulated areas for the Big Bay Boom Fourth of July Fireworks event which encompasses multiple portions of San Diego Bay. Under the provisions of 165.1123, a vessel may not enter the regulated area, unless it receives permission from the Captain of the Port, or his designated representative.
Spectator vessels may safely transit outside the regulated area but may not anchor, block, loiter, or impede the transit of participants or official patrol vessels. The Coast Guard may be assisted by other Federal, State, or Local law enforcement agencies in enforcing this regulation.
In addition to this notice of enforcement in the Federal Register, the Coast Guard plans to provide notification of this enforcement period via the Local Notice to Mariners, marine information broadcasts, and local advertising by the event sponsor.
If the Captain of the Port or his designated representative determines that the regulated area need not be enforced for the full duration stated on this document, he or she may use a Broadcast Notice to Mariners or other communications coordinated with the event sponsor to grant general permission to enter the regulated area.

SUPPLEMENTARY INFORMATION:

Dated: May 14, 2021.
T.J. Barelli, Captain, U.S. Coast Guard, Captain of the Port San Diego.
FR Doc. 202110737 Filed 52021; 8:45 am BILLING CODE 911004P

ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
EPAR09OAR20190440; FRL10022
39Region 9

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Clean Air Plans; 2008 8-Hour Ozone Nonattainment Area Requirements;
Western Nevada County, California Environmental Protection Agency EPA.
ACTION: Final rule.
AGENCY:

The Environmental Protection Agency EPA is taking final action to
SUMMARY:

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approve, or conditionally approve, all or portions of a state implementation plan SIP revision submitted by the State of California to meet Clean Air Act CAA
or Act requirements for the 2008 8hour ozone national ambient air quality standards NAAQS or standards in the Nevada County Western part, California ozone nonattainment area Western Nevada County. The SIP
revision is the Ozone Attainment Plan, Western Nevada County, State Implementation Plan for the 2008
Primary Federal 8-Hour Ozone Standard of .075 ppm 2018 Western Nevada County Ozone Plan or Plan. The 2018 Western Nevada County Ozone Plan addresses the Serious nonattainment area requirements for the 2008 ozone NAAQS, including the requirements for emissions inventories, attainment demonstration, reasonable further progress, reasonably available control measures, and contingency measures, among others; and establishes motor vehicle emissions budgets. The EPA is approving the 2018 Western Nevada County Ozone Plan as meeting all the applicable ozone nonattainment area requirements except for the contingency measure requirement, which the EPA is conditionally approving.
DATES:

This rule is effective on June 21,
2021.
The EPA has established a docket for this action under Docket ID
No. EPAR09OAR20190440. All documents in the docket are listed on the https www.regulations.gov website. Although listed in the index, some information is not publicly available, e.g., Confidential Business Information CBI or other information whose disclosure is restricted by statute.
Certain other material, such as copyrighted material, is not placed on the internet and will be publicly available only in hard copy form.
Publicly available docket materials are available through https
www.regulations.gov, or please contact the person identified in the FOR FURTHER
INFORMATION CONTACT section for additional availability information. If you need assistance in a language other than English or if you are a person with disabilities who needs a reasonable accommodation at no cost to you, please contact the person identified in the FOR
FURTHER INFORMATION CONTACT section.
FOR FURTHER INFORMATION CONTACT: T.
Khoi Nguyen, Air Planning Office AIR
2, EPA Region IX, 75 Hawthorne Street, San Francisco, CA 94105, 415 947
4120, or by email at nguyen.thien@
epa.gov.
ADDRESSES:

PO 00000

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SUPPLEMENTARY INFORMATION:

Table of Contents I. Summary of the Proposed Action II. Public Comments and EPA Responses III. Final Action IV. Statutory and Executive Order Reviews
I. Summary of the Proposed Action On January 12, 2021, the EPA
proposed to approve, under CAA
section 110k3, and to conditionally approve, under CAA section 110k4, a submittal from the California Air Resources Board CARB and the Northern Sierra Air Quality Management District NSAQMD or District as a revision to the California SIP for the Western Nevada County nonattainment area.1 The SIP revision is the 2018 Western Nevada County Ozone Plan.2 We refer to our January 12, 2021, proposed rule as the proposed rule.
In our proposed rule, we provided background information on the ozone standards,3 area designations, and related SIP revision requirements under the CAA and the EPAs implementing regulations for the 2008 ozone standards, referred to as the 2008 Ozone SIP Requirements Rule 2008 Ozone SRR.4 To summarize, the Western Nevada County ozone nonattainment area is classified as Serious for the 2008
ozone NAAQS, and the 2018 Western Nevada County Ozone Plan was developed to address the statutory and regulatory requirements for revisions to the SIP for the Western Nevada County Serious ozone nonattainment area.
Our proposed conditional approval of the contingency measures element of the 2018 Western Nevada County Ozone Plan relied on specific commitments: 1
From the District to adopt a rule that 1 86 FR 2318 January 12, 2021. The Western Nevada County nonattainment area for the 2008
ozone NAAQS consists of the portion of Nevada County west of the ridge of the Sierra Nevada mountains. For a precise definition of the boundaries of the Western Nevada County 2008
ozone nonattainment area, see 40 CFR 81.305.
2 Letter dated December 2, 2018, from Richard Corey, Executive Officer, CARB, to Mike Stoker, Regional Administrator, U.S. Environmental Protection Agency Region IX. The 2018 Western Nevada County Ozone Plan was submitted electronically through the EPAs State Planning Electronic Collaboration System on December 7, 2018, making this date the effective date of submittal. The Plan was deemed complete by operation of law six months after submittal, on June 7, 2019. Our proposed rule incorrectly identified the December 2, 2018 letter date as the submittal date, and June 2, 2019 as the date that the Plan was deemed complete by operation of law.
3 The 1-hour ozone NAAQS is 0.12 parts per million ppm one-hour average, the 1997 ozone NAAQS is 0.08 ppm eight-hour average, and the 2008 ozone NAAQS is 0.075 ppm eight-hour average.
4 2008 Ozone SRR, 80 FR 12264, 12283 March 6, 2015.

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