(a) Each grant awarded under the General Assistance Program shall be not less than $75,000. This limitation does not apply to additional funds that may become available for award to the same Tribe or Intertribal Consortium.

(b) The Regional Administrator shall not award a grant to a single Tribe or Intertribal Consortium of more than 10 percent of the total annual funds appropriated under the Act.

(c) The project period of a General Assistance Program award may not exceed four years.

(d) No award under this program shall result in reduction of total EPA grants for environmental programs to the recipient.