Translate the following English sentence to French:
"The most serious harm caused by the project, the damage to the Stegrennan mudflats, was only to be temporary, and the developers were liable for completely restoring the mudflats."
La conséquence la plus négative du projet, à savoir la perte de la laisse de vase de Stegrennan, n'est que temporaire, l'entrepreneur chargé des travaux étant tenu de réhabiliter le site.