Which decontamination type fits field operations and aims to reduce contamination to background levels?

• A. Basic
• B. Thorough
• C. Interim
• D. Secondary

Answer: (B)

In field decontamination, the goal is to remove contamination on people and gear to near-background levels so that there’s no ongoing exposure. The thorough approach fits field operations because it provides a more complete cleaning process than a rapid on-scene method, yet remains feasible on-site without requiring specialized facilities. It involves more thorough washing, rinsing, and removal of contaminated materials, aiming to bring contamination down to background levels rather than just reducing it superficially.

Basic decontamination is quicker and designed for immediate on-site reduction, but it may leave residual contamination and isn’t guaranteed to reach background levels. Interim decontamination serves as a bridge or interim step and isn’t intended to achieve full background-level cleanup by itself. Secondary decontamination refers to additional cleaning steps that aren’t the primary field-wide decon and doesn’t specifically target reducing to background levels across the scene.