PPRN: Regulatory zoning of natural risk prevention plans in Rompon (Ardèche)

For natural PPRs, the Environmental Code defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures can be foreseen to avoid exacerbating the risk. Depending on the hazard level, each area is subject to an enforceable settlement. The regulations generally distinguish three types of zones: 1- ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction; 2- ‘prescribed areas’, known as ‘blue zones’, where the hazard level is average and the projects are subject to requirements adapted to the type of issue; 3- areas not directly exposed to risks but where constructions, works, developments or farms, agricultural, forestry, craft, commercial or industrial could aggravate risks or cause new ones, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code). The latter category applies only to natural RPPs.针对自然风险预防计划（PPR），《环境法典》（条款L562-1）将区域划分为两类：风险暴露区域，以及未直接暴露于风险但可采取相关措施避免风险加剧的区域。依据危险等级，每类区域均需遵守强制性管控要求。相关法规通常将区域细分为三类：1. “禁止建设区域（俗称‘红色区域’）”：该区域危险等级较高，通用规则为禁止开展任何建设活动；2. “指定管控区域（俗称‘蓝色区域’）”：该区域危险等级中等，建设项目需遵循适配问题类型的相关要求；3. 第三类区域未直接暴露于风险，但农业、林业、手工业、商业及工业类建设项目、工程作业、开发活动或农场运营可能加剧现有风险或引发新风险，此类区域需遵守相关禁令或要求（详见《环境法典》第L562-1条）。该类别的适用范围仅涵盖自然风险预防计划（RPP）。