to remain available until expended. Denali commission For expenses necessary for the Denali Commission including the purchase, construction, and acquisition of plant and capital equipment as necessary and other expenses, $15,000,000, to remain available until expended, notwithstanding the limitations contained in section 306(g) of the Denali Commission Act of 1998: Provided , That funds shall be available for construction projects in an amount not to exceed 80 percent of total project cost: Provided further , That, notwithstanding any other provision of law regarding payment of a non-Federal share in connection with a grant-in-aid program, amounts under this heading shall be available for the payment of such a non-Federal share for programs undertaken to carry out the purposes of the Commission. Northern border regional commission For expenses necessary for the Northern Border Regional Commission in carrying out activities authorized by subtitle V of title 40, United States Code, $15,000,000, to remain available until expended: Provided , That such amounts shall be available for administrative expenses, notwithstanding section 15751(b) of title 40, United States Code. Nuclear regulatory commission Salaries and expenses (Including rescission of funds) For expenses necessary for the Commission in carrying out the purposes of the Energy Reorganization Act of 1974 and the Atomic Energy Act of 1954, $914,137,000, including official representation expenses not to exceed $25,000, to remain available until expended: Provided , That of the amount appropriated herein, not more than $7,500,000 may be made available for salaries, travel, and other support costs for the Office of the Commission, to remain available until September 30, 2019, of which, notwithstanding section 201(a)(2)(c) of the Energy Reorganization Act of 1974 ( 42 U.S.C. 5841(a)(2)(c) ), the use and expenditure shall only be approved by a majority vote of the Commission: Provided further , That revenues from licensing fees, inspection services, and other