The Secretary of Energy shall construct at Los Alamos National Laboratory, New Mexico, a building to replace the functions of the existing Chemistry and Metallurgy Research Building at Los Alamos National Laboratory associated with Department of Energy Hazard Category 2 special nuclear material operations.

The cost of the building constructed under subsection (a) may not exceed $3,700,000,000. If the Secretary determines the cost will exceed such amount, the Secretary shall submit a detailed justification for such increase to the congressional defense committees.

The construction authorized by subsection (a) shall use as its basis the facility project in the Department of Energy Readiness and Technical Base designated 04–D–125 (chemistry and metallurgy facility replacement project at Los Alamos National Laboratory).

In carrying out this section, the Secretary shall procure the services of the Commander of the Naval Facilities Engineering Command to assist the Secretary with respect to the program management, oversight, and design activities of the project authorized by subsection (a).

(1) In carrying out this section, the Secretary shall procure the services of the Commander of the Naval Facilities Engineering Command to assist the Secretary with respect to the program management, oversight, and design activities of the project authorized by subsection (a).

(2) The Secretary shall carry out this subsection using funds made available for the Administration.

The building constructed under subsection (a) shall commence operations by not later than December 31, 2026.

(Pub. L. 107–314, div. D, title XLII, § 4215, as added Pub. L. 112–239, div. C, title XXXI, § 3114(a)(1), Jan. 2, 2013, 126 Stat. 2170; amended Pub. L. 113–66, div. C, title XXXI, § 3146(c)(9), Dec. 26, 2013, 127 Stat. 1075.)