Valians assists its project-carrying customers while preparing their environmental authorization requests, whether these relate to installations classified for the protection of the environment (ICPE) or installations, structures, activities and works subject to authorization (IOTA). Valians intervenes in particular within the framework of activities likely to have an impact on water and aquatic environments.

Valians also supports these operators when it comes to submitting requests for information or certificates and, more generally, to exchange with the administrative authorities. The latter also intervenes on areas like modification or regularization of the situation of activities or installations.

In addition to this expertise, there is also the one of environmental authorization litigation.