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Exhibit 24
POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints R. Andrew Clyde, Mindy K. West and Donald R. Smith, Jr. and each of them, individually, as his or her true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him or her and in his or her name, place and stead in any and all capacities, in connection with this Registration Statement, including to sign in the name and on behalf of the undersigned, this Registration Statement and any and all amendments thereto, including post-effective amendments and registrations filed pursuant to Rule 462 under the Securities Act of 1933, as amended, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the U.S. Securities and Exchange Commission, granting unto said attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and desirable to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact and agents, or his or her substitute, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated:

SignatureTitleDate
/s/ R. Madison MurphyChairman & DirectorMay 9, 2023
R. Madison Murphy
/s/ Andrew ClydePresident, Chief Executive Officer & DirectorMay 9, 2023
R. Andrew Clyde(Principal Executive Officer)
/s/ Mindy K. WestExecutive Vice President, Fuels, Treasurer & Chief Financial OfficerMay 9, 2023
Mindy K. West(Principal Financial Officer)
/s/ Donald R. Smith Jr.Vice President and ControllerMay 9, 2023
Donald R. Smith Jr.(Principal Accounting Officer)
/s/ Claiborne P. DemingDirectorMay 9, 2023
Claiborne P. Deming
/s/ David L. GoebelDirectorMay 9, 2023
David L. Goebel
/s/ Fred L. HolligerDirectorMay 9, 2023
Fred L. Holliger
/s/ James W. KeyesDirectorMay 9, 2023
James W. Keyes
/s/ Diane N. LandenDirectorMay 9, 2023
Diane N. Landen
/s/ David B. MillerDirectorMay 9, 2023
David B. Miller
/s/ Jeanne L. PhillipsDirectorMay 9, 2023
Hon. Jeanne L. Phillips
/s/ Jack T. TaylorDirectorMay 9, 2023
Jack T. Taylor
/s/ Rosemary L. TurnerDirectorMay 9, 2023
Rosemary L. Turner