Caption title. At head of title: Project summary. "Sept. 1991." "EPA/600-S6-91-004."

This is one of a series of reports that present methodologies for assessing the potential risks to humans or other organisms from management practices for the disposal or reuse of municipal sewage sludge. The management practices addressed by this series include land application practices, distribution and marketing programs, landfilling, incineration and ocean disposal. In particular, these reports deal with methods for evaluating potential health and environmental risks from toxic chemicals that may be present in sludge. This document addresses risks from chemicals associated with sludge incineration practices. These proposed risk assessment procedures are designed as tools to assist in the development of regulations for sludge management practices. The procedures are structured to allow calculation of technical criteria for sludge disposal/reuse options based on the potential for adverse health or environmental impacts. The criteria may address management practices (such as site design or process control specifications), limits on sludge disposal rates or limits on toxic chemical concentrations in the sludge.