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Les dangers d’une telle pratique ont été reconnus et dénoncés sur de très nombreux littoraux de l’espace Pacifique et la généralisation de cette pratique à Wallis a interpellé les responsables techniques et les décideurs politiques du Territoire. En effet, de tels emprunts nuisent gravement à la stabilité du linéaire côtier en déclenchant ou en accentuant des évolutions érosives. Les plages ont tendance à régresser, voire à disparaître, mais les contraintes économiques, d’une part, et les tensions sur l’offre en granulats sableux indispensables à la construction, d’autre part, rendent le problème difficile à résoudre. Plusieurs possibilités ont été évoquées pour mettre à la disposition des utilisateurs des granulats sableux : importation de granulats, concassage de roches locales, emprunts de granulats marins. 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