The fundamental idea on containment is simple: keep one or more contaminants in or out of an area.  Quite literally, a containment is an isolation system. Containment is designed to stop, slow, or control the exchange of one or more contaminants from one spatial environment to another.  In the restoration world, we think of it as “specialized.”   The truth is, it is so common, we use it, live in it, and work in it  every day, no matter what you do for a living.   Containment truly permits life on Earth; without containment, Earth would be a dead planet