OverseerFM assumes effluent is captured in a concrete bunker for covered wintering pad/shelter and uncovered wintering pad/shelters. As part of the bunker management you are required to select a bunker lining material for the concrete bunker. Lining refers to the lining within the concrete bunker. The following options are available:
- No lining material (the bunker is concrete only)
- Carbon rich (sawdust, bark, woodchips)
- Soil