A more thorough explanation:

Definition: Remedial action is a measure taken to restore or improve the quality of the environment in the long term. It is often used in cases where hazardous substances have been released or may be released into the environment, and the aim is to prevent or minimize any further release of hazardous substances to reduce the risk to public health or the environment.

Example: Under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), remedial action is taken to permanently alleviate pollution caused by hazardous substances. For instance, if a factory has released toxic chemicals into the soil, remedial action may involve removing the contaminated soil and replacing it with clean soil to prevent further contamination.

Another example of remedial action is the cleanup of oil spills in the ocean. When an oil spill occurs, remedial action may involve using booms to contain the oil, skimmers to remove the oil from the water, and dispersants to break down the oil. These measures are taken to prevent the oil from spreading and causing further damage to marine life and the environment.

Overall, remedial action is an important tool for protecting the environment and public health by addressing pollution and preventing further contamination.