Map visualisation service (WMS) of the dataset: Restricted area of the PPRT “TOTAL RAFFINERIE DE PROVENCE” in the commune of Chateauneuf-les-Martigues — Bouches-du-Rhône

For PPRTs, the environmental code defines a single category of zones for zones (L515-15 et seq.): areas exposed to risk. Unlike natural RPPs, PPRTs never have restricted areas that are not directly exposed to risks. Depending on the hazard level, each area of the PPRT is subject to an enforceable settlement. PPRT regulations generally distinguish two types of zones: 1- “Building Prohibition Zones”, so-called “Red Zones”, when the hazard level is strong and the general rule is the construction ban; 2- “prescription zones”, known as “blue zones”, when the hazard level is average and projects are subject to requirements adapted to the type of issue. The instructions in the PPRT development guide add a gradation within the “red zones” and “blue areas”.