Perimeter of the PPRN of the municipality of Nieul-sur-mer (Risques littoralaux — erosion cotiere and marine submersion)

This dataset contains the boundaries at the different stages of the development of the PPRN. The characteristic of these perimeters is to be the consequence of an official act and to produce their effects from a specified date. This is the following: — prescribed scope contained in the prescription order of a PPR (natural); — scope of risk exposure that corresponds to the scope regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs); — scope of study which corresponds to the envelope in which the hazards were studied.本数据集涵盖PPRN在不同开发阶段的边界范围。此类边界范围的特征为：均由官方行为所产生，且自指定日期起正式生效，具体如下： — PPR（natural）指令文书中载明的法定范围； — 对应经核准RPP所规制范围的风险暴露范围。 此类经核准的边界范围属于公用役地（PPRNs对应的PM1）； — 研究范围：即开展危险隐患研究所涉及的包络范围。