; (3) in subsection c. (as so redesignated), by striking prohibited by subsection a. and inserting prohibited by subsections a. or b. ; and (4) by adding at the end the following new subsection: d. The Attorney General shall have primary investigative authority for any violation of this section. . 3116. Prohibition on expansion of Advanced Recovery and Integrated Extraction System pending achievement of 30 pit-per-year base capability Section 4219 of the Atomic Energy Defense Act ( 50 U.S.C. 2538a ) is amended by— (1) redesignating subsection (f) as subsection (g); and (2) inserting after subsection (e) the following new subsection: (f) Prohibition on ARIES expansion before achievement of 30 pit-per-year base capability (1) In general Until the date on which the Administrator certifies to the congressional defense committees that the base capability to produce not less than 30 war reserve plutonium pits per year has been established at Los Alamos National Laboratory, the Administrator may not— (A) carry out a project to expand the pit disassembly and processing capability of the spaces at PF–4 occupied by ARIES as of the date of the enactment of this Act; or (B) otherwise expand such spaces. (2) Exceptions Paragraph (1) shall not apply with respect to— (A) ongoing or planned small projects to sustain or improve the efficiency of plutonium oxide production, provided that such projects do not expand the spaces at PF–4 occupied by ARIES as of the date of the enactment of this Act; (B) the planning and design of an additional ARIES capability at a location other than PF–4