Frequently asked questions
Position yourself in the different classification schemes: D, DC, E, A

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 m².

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?

The principle is that you need to know what you are asking the prefectural administration to do:

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