This document describes good practices for the incineration and other organic matter treatment by thermal processes of sludges. Thermal conditioning is excluded. This document applies to sludges specifically derived from: storm water handling; night soil; urban wastewater collecting systems; urban wastewater treatment plants; treating industrial wastewater similar to urban wastewater. It includes all sludge that may have similar environmental and/or health impacts but excludes hazardous sludge from industry and dredged sludge.