Plan for the prevention of natural flood risks — Municipalities of the Aveyron Sector — Revision n°1 Cayrac Bioule — 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日颁布的《加强环境保护法案》确立，是国家开展风险预防工作的核心工具，其目标为对存在重大风险区域的开发活动实施监测。 PPR由省长审批，通常由省领土事务局（Direction Départementale des Territoires, DDT）牵头实施。此类计划通过针对现有或拟建建筑制定禁令或要求（包括建设规范、降低脆弱性工程、农业使用限制或农作规范等），对土地利用或土地开发行为进行管制。 此类计划可分为三种状态：编制中（已下达编制指令）、提前实施、已获批。 PPR档案包含编制说明、管制分区规划及配套管制条例，还可附加其他有助于理解该规划的图文资料（如风险点位、相关议题等）。每份PPR均通过多边形标识：当计划处于编制状态时，该多边形对应下达指令覆盖的全部市镇范围；当计划获批后，则对应受限区域的包络范围。 本地理数据表可实现全省范围内现有自然风险预防计划（Natural Risk Prevention Plans, PPRN）的空间制图。N_DOCUMENT_PPRN地理数据表中的每份PPRN文档，均与其格式为"ddd[PREF|DDT|DDTM|DREAL]aaaannnn"的GASPAR代码关联（其中AAAA与NNNN分别对应GASPAR系统中相关PPR流程的参考年份与序号）： 1. 其在GASPAR系统中管理的编制（或修订）行政流程； 2. 其配套的数值空间数据集，对应元数据表N_PPRN_AAAANNNN（编号#0001495）。