There are authorized to be appropriated to the Department of the Interior during the period beginning October 1, 1986, and ending on September 30, 2006, $21,000,000 for the design, construction, operation, and maintenance of the program and for the payment of travel expenses under sections
460ss–2
(j) and
460ss–3
(i) of this title. Monies appropriated under this subsection shall remain available until expended or October 1, 2006, whichever first occurs.