Code of Federal Regulations Title 40. Protection of Environment § 40.35.705 Maximum federal share

The Regional Administrator may provide Tribes and Intertribal Consortia up to 75 percent of the approved costs for the development and implementation of radon program activities incurred by the Tribe in the first year of a grant to the Tribe or Consortium;  60 percent in the second year;  and 50 percent in the third and each year thereafter.