5. Frequently asked questions

How do you calculate the threshold indicated in the nomenclature to determine the classification regime?

This threshold may correspond to a volume expressed in m3, a tonnage expressed in tons or a surface area expressed in m ² .

The expression "less than or equal to" is often used. This means that the classification scheme changes from x+1 onwards.

Sometimes, an activity is classified as such, regardless of the volume, tonnage or surface area involved. For example, offset printing using heat-drying rotary presses is subject to authorization (A), regardless of the total quantity of products consumed, under heading 2450 of the nomenclature.

Can I ask the prefectural authorities for advice on the classification system applicable to my project?...