For example, the PLU for the commune of Saint-Nazaire attaches a great importance to the protection of natural areas, the location of production zones, and risks in the estuary. As the attractiveness of the sea shore is quite important, the PLU imposes restrictive rules related on construction in the coastal zone and tries to relocate new development two or three kilometres inland. Involving 24 communes around the City of Nantes it will establish the main directions for the broader project of territorial development to the year 2030. They are also trying to encourage increased participation in the process by public-private development companies (Societes publiques d’amenagement) and private investors to manage land use and local land acquisition operations, beyond the limited number of public programs.