Restricted area of the Pland for the Prevention of Predictable Natural Risks of the municipality of Gignac-la-Nerthe — Bouches-du-Rhône -13DDTM20050146 (RETRAIT swelling OF ARGILES)

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.针对天然PPR（natural PPR），《环境法典》在条款L562-1中划定了两类区域：风险暴露区，以及虽未直接面临风险但可采取措施避免风险加剧的区域。依据危险等级的不同，每类区域均需遵守强制性管控要求。相关法规通常将区域划分为三种类型： 1. “禁止建设区”，亦称“红色区域”：该区域危险等级较高，通用规则为禁止一切建设活动； 2. “限制建设区”，亦称“蓝色区域”：该区域危险等级中等，相关工程建设需适配问题类型的合规要求； 3. 虽未直接面临风险，但建设工程、工程作业、开发项目或农业、林业、手工业、商业及工业类经营场所可能加剧既有风险或引发新风险的区域，需遵守相关禁令或合规要求（参见《环境法典》第L562-1条）。上述第三类区域仅适用于天然RPP（natural RPP）。