Why an approximate boundary always fails
A scope that says the warehouse floor and immediate surrounds sounds reasonable in a meeting and means nothing on site. One person reads it as the first metre outside the door and another as everything up to the fence. The gap between those readings is where the complaints live, and it typically surfaces during a client visit or an audit when somebody looks at the apron for the first time in months. The fix is not more words but more specific ones, tied to something physical on the ground.
Useful boundaries are things a person can see: the roller door track, the line where the concrete changes, the edge of the awning, the first row of bollards, a painted line already on the surface. Naming one of those removes interpretation entirely. Where the site wants a different line, that is a simple conversation at the walkthrough, and it takes a minute. What it must not remain is a description that two reasonable people can read two ways.
