Requiring counties to by a certain date inventory and prioritize dumps in the county for cleanup; authorizing and providing for counties to apply to the commissioner of the pollution control agency (PCA) for grants from the solid waste fund for cleanup of dump sites, specifying certain application form requirements and a grant limit; requiring commissioner prioritization of grants under certain limited funds conditions; specifying authorized uses of the grants; requiring commissioner biennial reports to the legislature on the status of the cleanup projects (mk)