Notwithstanding any other provision of ORS 268.330, the metropolitan service district shall use moneys collected by the district as service or user fees for solid waste disposal for:
(1) Activities of the metropolitan service district related to solid waste, including activities of regional concern that are directly related to reducing the environmental impact from the generation, collection, transportation, processing and disposal of solid waste; and
(2) Planning, administrative and overhead costs for activities of the district related to solid waste.