The Metropolitan Denver Sewage Disposal District no. 1 (Metro Denver) plant was designed mainly as a secondary treatment facility (activated sludge) to treat wastes from the cities and sanitary districts in the Metropolitan Denver Area. The most significant problem areas at the Metro Denver plant, leading to the request for assistance, were the sludge handling and sludge disposal problems. The major sludge handling problem was processing the volume and type of waste activated sludge generated by the secondary treatment process employed at the plant. Operational changes in the secondary treatment process, training in conducting various control tests and data evaluation were the major tasks performed during the assistance project. These functions were coupled with various operational recommendations for both short term and long term plant operation and control.