Introductory technical guidance for civil and environmental engineers interested in treatment of sludges and solids resulting from hazardous liquid streams. Here is what is discussed: 1. BIOLOGICAL TREATMENT 2. ENCAPSULATION 3. LOW TEMPERATURE THERMAL DESORPTION 4. SOLIDIFICATION/STABILIZATION 5. THERMAL DESTRUCTION 6. VOLUME REDUCTION 7. WET OXIDATION 8. EVAPORATION.