Subject to the availability of adequate appropriations, the Administrator shall use 30 percent of the funds made available for a fiscal year under this part to support grant, rebate, and loan programs administered by States that are designed to achieve significant reductions in diesel emissions.
For each fiscal year, the Administrator shall allocate among States for which applications are approved by the Administrator under subsection (b)(2)(B) funds made available to carry out this section for the fiscal year.
Except as provided in subparagraphs (B) and (C), using not more than 20 percent of the funds made available to carry out this part for a fiscal year, the Administrator shall provide to each State qualified for an allocation for the fiscal year an allocation equal to 1⁄53 of the funds made available for that fiscal year for distribution to States under this paragraph.
Except as provided in clause (ii), Guam, the United States Virgin Islands, American Samoa, and the Commonwealth of the Northern Mariana Islands shall collectively receive an allocation equal to 1⁄53 of the funds made available for that fiscal year for distribution to States under this subsection, divided equally among those 4 States.
If a State agrees to match the allocation provided to the State under paragraph (2) for a fiscal year, the Administrator shall provide to the State for the fiscal year an additional amount equal to 50 percent of the allocation of the State under paragraph (2).
Any funds that are not claimed by a State for a fiscal year under this subsection shall be used to carry out section 16132 of this title.
Subject to paragraphs (2) and (3) and, to the extent practicable, the priority areas listed in section 16132(c)(3) of this title, a State shall use any funds provided under this section to develop and implement such grant, rebate, and low-cost revolving loan programs in the State as are appropriate to meet State needs and goals relating to the reduction of diesel emissions.
The chief executive of a State that receives funding under this section may determine the portion of funds to be provided as grants, rebates, or loans.
In providing grants, rebates, and loans under this section, a State shall use the priorities in section 16132(c)(4) of this title.