Natural Risk Prevention Plan for Block Falls — Common of Caylus — Document — Department of Tarn-et-Garonne

The Risk Prevention Plans (PPR) were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. Their objective is to monitor development in areas exposed to a major risk. The PPRs are approved by the prefects and generally carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through building prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on agricultural use or practices, etc.). These plans may be under development (prescribed), implemented in advance or approved. The RPP file contains a presentation note, a regulatory zoning plan and a regulation. Other graphic documents that are useful for understanding the approach (e.g. hazards, issues, etc.) can be attached. Each PPR is identified by a polygon that corresponds to the set of municipalities the scope of the prescription when it is in the prescribed state; and the envelope of restricted areas when it is in the approved state. This geographical table allows to map existing PPRNs on the department. Each PPRN document in the N_DOCUMENT_PPRN geographical table is linked with its GASPAR code in the format “ddd[PREF|DDT|DDTM|DREAL]aaaannnn” (AAAA and NNNN correspond to the reference year and the order number of the associated PPR procedure in GASPAR): 1. its administrative procedure for drawing up (or revising) managed in the GASPAR application, on the one hand, 2. its set of numeric spatial data as described in the metadata sheet N_PPRN_AAAANNNN (#0001495).风险预防计划（Risk Prevention Plans，PPR）由1995年2月2日《加强环境保护法案》确立，是国家在风险预防领域的核心工具，其目标是对存在重大风险区域的开发活动进行监测。 风险预防计划由省长批准，通常由领土事务部门局（Departmental Directorates of the Territories，DDT）牵头实施。此类计划通过对现有或拟建建筑设定建筑禁令或相关要求（包括建设规范、降险工程、农业使用限制或耕作规范等），对土地用途或土地开发进行管控。 此类计划可分为编制（核定）、预实施与已批准三种状态。 PPR档案包含说明性说明、管制区划图与管制条例。其他有助于理解该计划的可视化文档（如风险分布图、问题梳理图等）可作为附件附加。每份PPR均由多边形标识：当计划处于核定状态时，该多边形对应核定范围覆盖的所有市镇；当计划处于已批准状态时，则对应受限区域的外包范围。 本地理数据表可用于绘制本辖区内现有PPRN的空间分布情况。 N_DOCUMENT_PPRN地理数据表中的每份PPRN文档，均与其GASPAR编码相关联，编码格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"（其中AAAA与NNNN分别对应关联PPR流程在GASPAR系统中的参考年份与序号）：其一为在GASPAR系统中管理的编制（或修订）行政流程，其二为元数据表N_PPRN_AAAANNNN（#0001495）中描述的数值空间数据集。