Two sanitation scenarios incorporating solids treatment via the Biogenic Refinery, described in Rowles et al. , were modeled in the analysis: a baseline scenario processing combined waste from pit latrines and an alternative scenario processing source-separated waste from urinediverting dry toilets (UDDTs) (Figure ). The baseline scenario processes waste from a community using pit latrines as their user interface and pit latrine emptying and conveyance via vacuum truck transport to treatment facility. At the facility, a screw press is used to separate solids and liquids, with liquids treated in a liquid treatment bed and solids treated by the biogenic refinery.