42 U.S.C. § 300ff–31b

(a) In general For the purpose of carrying out this subpart, there are authorized to be appropriated $1,195,500,000 for fiscal year 2007, $1,239,500,000 for fiscal year 2008, $1,285,200,000 for fiscal year 2009, $1,349,460,000 for fiscal year 2010, $1,416,933,000 for fiscal year 2011, $1,487,780,000 for fiscal year 2012, and $1,562,169,000 for fiscal year 2013. Amounts appropriated under the preceding sentence for a fiscal year are available for obligation by the Secretary until the end of the second succeeding fiscal year. (b) Reservation of amounts (1) Emerging communities Of the amount appropriated under subsection (a) for a fiscal year, the Secretary shall reserve $5,000,000 for grants under section 300ff–30 of this title . (2) Supplemental grants (A) In general Of the amount appropriated under subsection (a) for a fiscal year in excess of the 2006 adjusted amount, the Secretary shall reserve ⅓ for grants under section 300ff–29a of this title , except that the availability of the reserved funds for such grants is subject to section 300ff–28(a)(2)(H) of this title as applied for such year, and except that any amount appropriated exclusively for carrying out section 300ff–26 of this title (and, accordingly, distributed under section 300ff–28(a)(2)(F) of this title ) is not subject to this subparagraph. (B) 2006 adjusted amount For purposes of subparagraph (A), the term “2006 adjusted amount” means the amount appropriated for fiscal year 2006 under section 300ff–77(b) of this title (as such section was in effect for such fiscal year), excluding any amount appropriated for such year exclusively for carrying out section 300ff–26 of this title (and, accordingly, distributed under section 300ff–28(a)(2)(I) of this title , as so in effect).