((a)) ** In general**
((1)) ** General authorization** There are authorized to be appropriated to carry out this subchapter $120,000,000 for fiscal year 2010 and such sums as may be necessary for each of the fiscal years 2011 through 2015.
((2)) ** Discretionary activities**
((A)) ** In general** Of the amounts appropriated for a fiscal year under paragraph (1), the Secretary shall make available 30 percent of such amounts to fund discretionary activities under this subchapter.
((B)) ** Demonstration projects** Of the amounts made available for a fiscal year under subparagraph (A), the Secretary shall make available not more than 40 percent of such amounts to carry out .section 5105 of this title
((b)) ** Availability of funds without fiscal year limitation** The Secretary shall ensure that funds appropriated pursuant to authorizations in this subchapter shall remain available until expended for the purposes for which they were appropriated.