ALUM RESIDUALS LANDFILLING DEVELOPMENT OF PROTOCOL DOCUMENT   The AWWA Research Foundation selected EE&T to prepare a document to guide utilities and regulators in selecting design requirements for landfilling water plant residuals. A major portion of this design guidance document focuses on monofill landfills. Items covered include general siting requirements; regulatory impacts; volume and area determination; the need for liners and their design requirements; leachate collection, treatment and disposal; selection of landfilling method based on residuals physical characteristics; and design considerations. Specific technical issues this document addresses include laboratory test methodologies for evaluating residuals handleability to determine residuals impacts on trucking, dozing and compaction as well as selecting optimum residuals impacts on trucking, dozing and compaction as well as selecting optimum residuals dewatering equipment. Also addressed is detailed laboratory research on the chemical characteristics of leachate from water plant residuals monofills. This research included different types of residuals and their leachate impact on liners and leachate collection and leachate treatment options.