I'm sorry, that's the part I don't understand. Why is that considered a preventive measure? It's a preventive measure to what? It's not to the accident happening or to contamination flowing out of the site....
I understand the necessity in terms of naming authorities that have a certain amount of openness and vagueness, but it concerns me when we say that a judge will have to decide. When you say a preventive measure is putting up a barrier across the road, it is a preventive measures to what? It is preventive to somebody driving down the road, but certainly not to the extent of containment of the accident. Is it?