• Treatment and disposal is the last step in effective waste management and should be undertaken only after all other practical reduction and reuse options have been examined.

• Therefore, treatment options, including onsite treatment, discharge to sanitary sewer systems, or offsite disposal at a wastewater treatment facility, should be investigated during the planning and design processes.

• In other words, any decision concerning reuse, treatment or disposal of incineration residues can be taken only after their environmental quality has been assessed.