Support agency activities are those activities conducted by the recipient to ensure its meaningful and substantial involvement. The activities described in section 121(f)(1) of CERCLA, as amended, and in subpart F of the NCP ( 40 CFR part 300 ), are eligible for funding under a support agency Cooperative Agreement. Participation in five-year reviews of the continuing protectiveness of a remedial action is also an eligible support agency activity.
40 C.F.R. §35.6245