A third source, neither the ministry census nor OpenStreetMap: what the town itself publishes. It is the only one that says where a facility came from, who built it and what it cost.
Noirmoutier-en-l'Île's pumptrack is part of a 900 m² skatepark by the parking de l'Étier du Moulin, with a bowl and a plaza. The track itself is 250 m². The whole was designed with input from Simon Léauté, a three-time French skateboard runner-up.1
The design-and-build contract went to Entreprise Bodin on 25 February 2022 for €366,000 excl. tax, revised to €340,320: Bodin for the earthworks and the pumptrack, FL Construction for the skatepark.2
Facility
900 m² skatepark: a bowl, a plaza and a 250 m² track1