Act of 1998, as amended, funds shall be available for construction projects for which the Denali Commission is the sole or primary funding source in an amount not to exceed 90 percent of total project cost for distressed communities, as defined by such section and by section 701 of appendix D, title VII, Public Law 106–113 (113 Stat. 1501A–280), and for Indian Tribes, as defined by section 5304(e) of title 25, United States Code, and in an amount not to exceed 50 percent for non-distressed communities: 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 any project for which the Denali Commission is not the sole or primary funding source, provided that such project is consistent with 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, $41,000,000, 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. Southeast Crescent Regional Commission For expenses necessary for the Southeast Crescent Regional Commission in carrying out activities authorized by subtitle V of title 40, United States Code, $20,000,000, to remain available until expended. Southwest Border Regional Commission For expenses necessary for the Southwest Border Regional Commission in carrying out activities authorized by subtitle V of title 40, United States Code, $5,000,000, to remain available until expended. Great Lakes Authority For expenses necessary for the Great Lakes Authority in carrying out activities authorized by subtitle V of title 40, United States Code, $2,500,000, to remain available until expended. Nuclear Regulatory Commission SALARIES AND EXPENSES For