Which type of decontamination is carried out by a unit to reduce contamination equal to natural background or to the lowest level possible?

The type of decontamination carried out by a unit to reduce contamination to levels equal to natural background or to the lowest level possible is known as "reduction decontamination" or "remediation." This process focuses on minimizing residual contaminants to ensure safety and environmental protection, often involving techniques such as washing, vacuuming, or using chemical agents. The goal is to achieve a level of cleanliness that is deemed acceptable for health and safety standards.