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Federal Register / Vol. 86, No. 166 / Tuesday, August 31, 2021 / Rules and Regulations
agreements such as contractors, attorneys, or subject matter experts, assisting the Commission in carrying out its duties;
4 Reviewing courts and their staffs;
and 5 Court reporters, stenographers, or persons operating audio or video recording equipment for such court reporters or stenographers at hearings or depositions.

By the Commission.
Erica A. Barker, Secretary.
FR Doc. 202118746 Filed 83021; 8:45 am BILLING CODE 7710FWP

ENVIRONMENTAL PROTECTION
AGENCY
40 CFR Part 52
EPAR03OAR20200703; FRL883702
R3

Approval and Promulgation of Air Quality Implementation Plans; District of Columbia; Regional Haze State Implementation Plan for the Second Implementation Period and Reasonably Available Control Technology for Major Stationary Sources of Nitrogen Oxides; Technical Amendment Environmental Protection Agency EPA.
ACTION: Final rule.
AGENCY:

The Environmental Protection Agency EPA is approving a regional haze state implementation plan SIP
revision submitted by the District of Columbia the District or DC
through the Department of Energy and Environment DOEE on November 8, 2019, as satisfying applicable requirements under the Clean Air Act CAA and EPAs Regional Haze Rule RHR for the programs second implementation period. The Districts SIP submission addressed the requirement that states must periodically revise their long-term strategies for making reasonable progress towards the national goal of preventing any future, and remedying any existing, anthropogenic impairment of visibility in mandatory Class I
Federal Areas, including regional haze.
EPA is taking this action pursuant to sections 110 and 169A of the CAA. EPA
is also correcting an error in the citations in our previous final approval of the Districts revision to the Reasonably Available Control Technology for Major Stationary
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SUMMARY:

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Sources of Nitrogen Oxides Rule DC
NOx RACT rule according to our authority under section 110k6 of the CAA.
DATES: This final rule is effective on September 30, 2021.
ADDRESSES: EPA has established a docket for this action under Docket ID
Number EPAR03OAR20200703. 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.
FOR FURTHER INFORMATION CONTACT:
Keila M. Pagan-Incle, Planning &
Implementation Branch 3AD30, Air &
Radiation Division, U.S. Environmental Protection Agency, Region III, 1650
Arch Street, Philadelphia, Pennsylvania 19103. The telephone number is 215
8142926. Ms. Pagan-Incle can also be reached via electronic mail at paganincle.keila@epa.gov.
SUPPLEMENTARY INFORMATION:
I. Background On April 15, 2021, EPA published a notice of proposed rulemaking NPRM
for the District. 86 FR 19793. The NPRM
proposed approval of DCs regional haze plan for the second implementation period DC DOEE 2019 Regional Haze SIP submission, which runs through 2028.
In the 1977 CAA amendments, Congress created a program for protecting visibility in the nations mandatory Class I Federal areas, which include certain national parks and wilderness areas.1 42 U.S.C 7491. The CAA establishes as a national goal the prevention of any future, and the remedying of any existing, impairment of visibility in mandatory Class I
Federal areas which impairment results from manmade air pollution,2 and 1 Areas statutorily designated as mandatory Class I Federal areas consist of national parks exceeding 6,000 acres, wilderness areas and national memorial parks exceeding 5,000 acres, and all international parks that were in existence on August 7, 1977. 42
U.S.C. 7472a. There are 156 mandatory Class I
areas. The list of areas to which the requirements of the visibility protection program apply is in 40
CFR part 81, subpart D.
2 42 U.S.C. 7491a1.

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directs EPA to promulgate regulations to assure reasonable progress toward meeting this national goal. 42 U.S.C.
7491a4. On July 1, 1999, EPA
promulgated the RHR, which is codified at 40 CFR 51.308.3 See 64 FR 35714.
Additional background and information about regional haze and the regional haze program is included in the April 15, 2021 proposal. 86 FR 19793.
To address regional haze visibility impairment, the 1999 RHR established an iterative planning process that requires states in which Class I areas are located and states the emissions from which may reasonably be anticipated to cause or contribute to any impairment of visibility in a Class I area to periodically submit SIP revisions to address regional haze visibility impairment. 42 U.S.C. 7491b2; 40
CFR 51.308b and f; see also 64 FR
35768 July 1, 1999. Under the CAA, each SIP submission must contain a long-term ten to fifteen years strategy for making reasonable progress toward meeting the national goal. 42 U.S.C.
7491b2B. States first regional haze SIP submissions were due by December 17, 2007, 40 CFR 51.308b, with subsequent SIP submissions containing revised long-term strategies originally due July 31, 2018, and every ten years thereafter. 64 FR 35768.
On January 10, 2017, EPA
promulgated revisions to the RHR that apply for the second and subsequent implementation periods. 82 FR 3078.
The revisions to the regional haze program focused on the requirement that States SIPs contain long-term strategies for making reasonable progress towards the national visibility goal. Among other changes relative to the first period requirements, the 2017
RHR Revisions adjusted the deadline for States to submit their secondimplementation-period SIP revisions from July 31, 2018 to July 31, 2021, clarified the order of analysis and the relationship between the reasonable progress goals RPGs and the long-term strategy, and focused on making visibility improvements on the days with the most anthropogenic visibility impairment, as opposed to the days with the most visibility impairment overall. EPA has issued several guidance documents relevant to SIP
development for the second 3 In addition to the generally applicable regional haze provisions at 40 CFR 51.308, EPA also promulgated regulations specific to addressing regional haze visibility impairment in Class I areas on the Colorado Plateau at 40 CFR 51.309. The latter regulations are applicable only for specific jurisdictions regional haze plans submitted no later than December 17, 2007, and thus are not relevant here.

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