Scope of the plan for the prevention of natural hazards of Saint-Cergues (Haute-Savoie) — approved on 14/12/1998

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 or technological); — scope of risk exposure that corresponds to the scope regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs and PM3 for PPRTs); — scope of study which corresponds to the envelope in which the hazards were studied.本数据集收录PPRN（PPRN）开发各阶段的边界范围。此类边界的核心特征为：均由法定文书确立，并自指定日期起产生法律效力，具体如下： — 纳入PPR（PPR，自然型或技术型）审批令的法定适用范围； — 风险暴露范围，对应经核准的RPP（RPP）所规制的边界范围。该核准边界属于公用役地范畴，其中PPRN对应PM1，PPRT对应PM3； — 研究范围，即开展危害研究所覆盖的空间范围。