(a) The Regional Administrator shall consult with the Tribal agency which has the primary responsibility for radon programs as designated by the affected Tribe before including Indoor Radon Grant funds in a Performance Partnership Grant with another Tribal agency.

(b) No grant may be made in any fiscal year to a Tribe or Intertribal Consortium which did not satisfactorily implement the activities funded by the most recent grant awarded to the Tribe or Intertribal Consortium for an Indoor Radon program.

(c) The costs of radon measurement equipment or devices (see § 35.820(b)(1)(iv)) and demonstration of radon mitigation, methods, and technologies (see § 35.820(b)(1)(ix)) shall not, in aggregate, exceed 50 percent of a Tribe's or Intertribal Consortium's radon grant award in a fiscal year.

(d) The costs of general overhead and program administration (see § 35.820(b)(1)(vii)) of an indoor radon grant shall not exceed 25 percent of the amount of a Tribe's or Intertribal Consortium's Indoor Radon Grant in a fiscal year.

(e) A Tribe or Intertribal Consortium may use funds for financial assistance to persons only to the extent such assistance is related to demonstration projects or the purchase and analysis of radon measurement devices.

(f) Recipients must provide the Regional Administrator all radon-related information generated in its grant supported activities, including the results of radon surveys, mitigation demonstration projects, and risk communication studies.

(g) Recipients must maintain and make available to the public, a list of firms and individuals that have received a passing rating under the EPA proficiency rating program under section 305(a)(2) of the Act.

(h) Funds appropriated for section 306 may not be used to cover the costs of federal proficiency rating programs under section 305(a)(2) of the Act. Funds appropriated for section 306 and grants awarded under section 306 may be used to cover the costs of the Tribal proficiency rating programs.