Improper hazardous waste management is a big environmental issue. The U.S. has laws to manage hazardous waste from start to finish. The EPA has rules to decide if solid waste is hazardous. Hazardous waste is classified based on toxicity, ignitability, reactivity, and corrosivity. Laws from 1984 and changes to the Superfund program encourage treating or destroying waste instead of burying it. New technologies aim to change hazardous waste to make it safer. Cleanup methods need to be effective and fit the situation. Regulations, environmental concerns, and new technologies make hazardous waste cleanup more complex. New technologies offer better ways to solve these problems.