The First Administrative Court was required by two NGOs to cancel a decision of the State Council of the Canton of Vaud allowing the Municipality of Corsier sur Vevey to change its land use plans to allow the construction of a Great Hall.

The two NGOs pointed out the construction would have a negative impact on the environment because it would require the destruction a biotope of local and regional importance and that the decision was taken despite a negative opinion of the regional forest and wildlife services.

The court accepted that those two NGOs have a standing to sue in that case. On the facts, the court considered that biotopes of local and regional importance do not fall under the same protection regime as the forest and therefore cannot be systematically protected, furthermore in such cases like the present one where the biotope is in a building area. Therefore the court dismissed the appeal.