National Priorities List (NPL), meaning the}.r are scheduled for long-term cleanup. Landfills, dumps and abandoned chemical plants are examples of remedial sites. Removal sites are sudden environmental emergencies that are not on the NFL. Mercmy spills, oil tanker spills and factory fires are examples of removal sites. After a Superfund site is identified, an initial cleanup is made. Studies are performed to determine what kind of hazardous waste is on the site and what risk it poses to the environment. Then the EPA decides how to clean up the site. The method of cleanup usually involves human labor, chemical treatment, and some construction