((a)) ** .—** The following amounts may be appropriated to the Secretary of Transportation:
((1)) not more than $15,000,000 to carry out section 5562(a)(1) and (3) of this title.
((2)) not more than $2,500,000 to carry out .
((3)) not more than $2,500,000 to carry out .
((b)) ** .—** Amounts appropriated to carry out this chapter remain available until expended.