The Delaware County No. 3 incinerator is a traveling grate incinerator with two identical combustion units, each having a design capacity of 250 tons per 24 hr. The combustion products from each furnace pass through a wetted refractory baffle impingement collection system and are discharged into the atmosphere through a common stack. The residue drops from the grates into the quench tank where a drag conveyor removes the residue and discharges it into a truck for removal to a disposal site. Wastewater from the collection system and quench tank flows into a clarifier prior to its reuse or discharge into a watercourse. The purpose of the test was to develop basic information pertaining to the operation of the incinerator and its potential impact on the surrounding environment.