(a) In general 
To carry out the provisions of this subchapter, there are authorized to be appropriated such sums as may be necessary for fiscal years 2004 through 2008.

(b) Evaluation 
The Administrator may use not more than 5 percent of the amount appropriated for a fiscal year under subsection (a) of this section to conduct an evaluation of the effectiveness of the programs and activities established and operated under this subchapter.