PPRN of Saint-Martin-du-Fresne

For natural RPPs, the Environmental Code defines two categories of areas (L562-1): risk-prone areas and areas that are not directly exposed to risks but on which measures may be provided for avoid increasing the risk. Depending on the hazard level, each area is subject to a enforceable regulation. The regulations generally distinguish three types of zones: 1- “Building prohibited areas”, so-called “red zones”, when the level of D’aléa is strong and that the general rule is the prohibition on construction; 2- “areas” subject to requirements, referred to as ‘blue zones’, where the hazard level is average and that projects are subject to requirements adapted to the type of issue; 3- Areas not directly exposed to risks, but where constructions, works, development or agricultural, forestry, artisanal, commercial or industrials could aggravate risks or cause new, submitted prohibitions or prescriptions (cf. Article L562-1 of the Environmental Code). This last category applies only to natural RPPs.针对自然RPPs，《环境法典》第L562-1条明确划定了两类区域：易受风险影响的区域，以及未直接暴露于风险但可采取相关措施以防止风险加剧的区域。依据危险等级，每类区域均需遵守强制性监管规范。监管规范通常将区域划分为三类： 1. 禁建区（俗称"红区"）：当危险等级（d’aléa）较高时，通用规则为禁止任何建设活动； 2. 需符合特定监管要求的区域（俗称"蓝区"）：此类区域危险等级为中等，相关建设项目需根据问题类型适配相应监管要求； 3. 非直接风险暴露区域：在此类区域内开展的建设、工程、开发或农业、林业、手工业、商业及工业活动可能加剧风险或引发新的风险，因此需遵守相关禁令与规定（详见《环境法典》第L562-1条）。 上述最后一类区域仅适用于自然RPPs。