Hogan Lovells US LLP Columbia Square 555 Thirteenth Street, NW Washington, DC 20004 Hogan T +1 202 637 5600 F +1 202 637 5910 Lovells www.hoganlovells.com

January 29, 2021

BY Electronic Filing System

Hon. Scott S. Harris Clerk of the Court Supreme Court of the United States One First Street, N.E. Washington, D.C. 20543

Re: Concerned Citizens forfor Nuclear Safety, Inc. v. Environmental Protection Agency, et al.,al., No. 20-717

Dear Mr. Harris:

In compliance with Rules 29.6 and 29.7, we submit this letter acknowledging a material change to the corporate disclosure statement filedfiled on January 27, 2021 with our Brief in Opposition. Please find the amended corporate disclosure statement attached to this letter as Attachment 1.1.

Respectfully submitted,

/s/ James T. Banks James T. Banks

Counsel of Record forfor Respondent Triad National Security, LLC cc: All counsel of record (via Electronic Filing System)

Hogan Lovells US LLP is a limited liability partnership registered in the District of Columbia. "Hogan“Hogan Lovells"Lovells” is an international legal practice that includes Hogan Lovells US LLP and Hogan Lovells International LLP, with offices in: Alicante Amsterdam Baltimore Beijing Birmingham Boston Brussels Colorado Springs Denver Dubai Dusseldorf Frankfurt Hamburg Hanoi Ho Chi Minh City Hong Kong Houston Johannesburg London Los Angeles Luxembourg Madrid Mexico City Miami Milan Minneapolis Monterrey Moscow Munich New York Northern Virginia Paris Perth Philadelphia Rome San Francisco Sãosao Paulo Shanghai Silicon Valley Singapore Sydney Tokyo Warsaw Washington, D.C. Associated Offices: Budapest Jakarta Riyadh Shanghai FTZ Ulaanbaatar Zagreb. Business Service Centers: Johannesburg Louisville. Legal Services Center: Berlin. For more information see www.hoganlovells.com ATTACHMENT 11 IINN THETHE fpupremeSupreme Court of the UnitedEintteb iptate5States ______NNo.o. 20-71720-717 ______

CCONCERNEDONCERNED CITIZENSCITIZENS FFOROR NUCLEARNUCLEAR SSAFETY,AFETY, IINC.,NC., Petitioner,Petitioner, v.v.

UNITEDUNITED STATESSTATES EENVIRONMENTALNVIRONMENTAL PPROTECTIONROTECTION AGENCY;AGENCY; UNITEDUNITED SSTATESTATES DEPARTMENTDEPARTMENT OFOF EENERGY;NERGY; TRIADTRIAD NNATIONALATIONAL SSECURITY,ECURITY, LLLC,LC, Respondents.Respondents. ______

AMENDEDAMENDED RULERULE 29.629.6 DISCLOSUREDISCLOSURE STATEMENTSTATEMENT

TriadTriad NNationalational Security,Security, LLLCLC isis a LLimitedimited LLiabilityiability CompanyCompany incorporatedincorporated uundernder thethe lawlaw ofof thethe StateState ofof DDelaware.elaware. TriadTriad isis comprisedcomprised ofof threethree mmemberember organizations:organizations: BattelleBattelle MemorialMemorial IInstitute,nstitute, thethe TexasTexas A&MA&M University,University, aandnd thethe

RRegentsegents ofof thethe UniversityUniversity ofof California.California.

(1)(1)