; and (B) to the maximum extent practicable, to use the programs described in subparagraph (A) to give high priority to projects that serve areas described in subsection (c)(2)(G). (2) Apportionment of funds The chief executive officer of a State, regional agency, or Indian tribe that receives funding under this section may determine the portion of funds to be provided as grants and the portion to be provided as rebates. (3) Use of funds A State, regional agency, or Indian tribe shall use funds provided under this section for— (A) projects to complete the replacement of old wood heaters, including the installation of heaters and training of certified installers of heaters that— (i) are at least as efficient and clean-burning as EPA-certified Step 2 wood heaters; and (ii) meet the purposes described in subsection (a); and (B) with respect to Indian tribes, the purposes described in subsection (c)(1)(B). (4) Supplement, not supplant Funds made available under this section shall be used to supplement, not supplant, funds made available for existing State clean air programs. (5) Public notification Not later than 60 days after the date on which the Administrator makes funding available under this section each fiscal year, the Administrator shall publish on the website of the Environmental Protection Agency— (A) the total number of grants awarded and the amounts provided to States, regional agencies, and Indian tribes; (B) a general description of each application of a State, regional agency, or Indian tribe that received funding