40 CFR § 35.135 - Activities eligible for funding.
(a) A recipient may use a Performance Partnership Grant, subject to the requirements of paragraph (c) of this section, to fund any activity that is eligible for funding under at least one of the environmental programs from which funds are combined into the grant.
(b) A recipient may also use a Performance Partnership Grant to fund multi-media activities that are eligible in accordance with paragraph (a) of this section and have been agreed to by the Regional Administrator. Such activities may include multi-media permitting and enforcement and pollution prevention, ecosystem management, community-based environmental protection, and other innovative approaches.
(c) A recipient may not use a Performance Partnership Grant to fund activities eligible only under a specific environmental program grant unless some or all of the recipient's allotted funds for that program have been included in the Performance Partnership Grant.