IA HF989

Creates a new regulatory framework for anaerobic digester systems used to process manure from animal feeding operations, establishing definitions, construction permits, and design standards for digester structures

Requires construction permits (with fees up to $250) for digester structures including liquid digester manure storage, feedstock storage, processing structures, and digestate storage structures, with 60-day approval timelines

Establishes separation distance requirements between digester structures and residences, commercial enterprises, religious institutions, educational institutions, and public use areas, mirroring existing confinement feeding operation rules

Sets specific construction standards for formed and unformed digester structures, including requirements for covers, groundwater separation, liner materials, and mandatory annual inspections for unformed structures

Takes effect immediately upon enactment, with the Department of Natural Resources continuing current regulatory practices until all implementing rules are formally adopted