; and (B) is on an inventory of that land maintained by the Environmental Protection Agency. (2) Supplement An eligible recipient may use a grant awarded under this subsection to supplement other funds provided by the Environmental Protection Agency or any other Federal agency for identical or similar purposes to the purposes described in paragraph (1), in accordance with such conditions as the Administrator may establish. (3) Use of funds Subject to such conditions as the Administrator may establish, an eligible recipient may use a grant awarded under this subsection to address contamination by eligible contaminants on ANCSA land through planning, assessment, remediation, and activities necessary to prepare the land for reuse. (4) Waiver (A) In general The Administrator may waive the requirement described in paragraph (1)(A) if the owner of the land at the time a grant is awarded under this subsection did not cause or contribute to the contamination on the land. (B) Effect of waiver Land with respect to which a waiver is provided under subparagraph (A) shall be eligible for a grant under this subsection if the land was contaminated by an eligible contaminant after the time of conveyance of the land pursuant to the Alaska Native Claims Settlement Act ( 43 U.S.C. 1601 et seq. ). (5) Priorities In awarding grants under this subsection, the Administrator shall give priority to ANCSA land with respect to which— (A) the contamination by eligible contaminants presents an imminent and substantial risk to human health or the environment, regardless of the specific circumstances that created the risk