; or (3) annul the determination that such lands are eligible for gaming under the Indian Gaming Regulatory Act. 510. None of the funds made available by this Act may be used to finalize, implement, or enforce the proposed rule titled Review of the National Ambient Air Quality Standards for Particulate Matter published in the Federal Register by the Environmental Protection Agency on April 30, 2020 (85 Fed. Reg. 24094 et seq.). This division may be cited as the Department of the Interior, Environment, and Related Agencies Appropriations Act, 2021 . D Military Construction, Veterans Affairs, and Related Agencies Appropriations Act, 2021 That the following sums are appropriated, out of any money in the Treasury not otherwise appropriated, for military construction, the Department of Veterans Affairs, and related agencies for the fiscal year ending September 30, 2021, and for other purposes, namely: I Department of defense Military construction, army For acquisition, construction, installation, and equipment of temporary or permanent public works, military installations, facilities, and real property for the Army as currently authorized by law, including personnel in the Army Corps of Engineers and other personal services necessary for the purposes of this appropriation, and for construction and operation of facilities in support of the functions of the Commander in Chief, $608,336,000, shall be used for the projects, and in the amounts specified under the heading for Military Construction, Army in the report accompanying this Act, to remain available until September 30, 2025: Provided , That, of this amount, not to exceed $126,436,000 shall be available for study, planning, design, architect and engineer services, and host nation support, as authorized by law, unless the Secretary of the Army determines that additional obligations are necessary for such purposes and notifies the Committees on Appropriations of both Houses of Congress of the determination and the reasons therefor. Military construction, navy and