Map Viewing Service (WMS) of the dataset: Perimeter of the Grand Lucé PPRMT in Sarthe.

This dataset contains the boundaries at the different stages of the development of the PPRN. The characteristic of these perimeters is to be the consequence of an official act and to produce their effects from a specified date. This is the:- prescribed perimeter set out in the Prescribing Order of a PPR (natural or technological);- scope of exposure to risks that corresponds to the scope regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs and PM3 for PPRTs);- scope of study that corresponds to the envelope in which the hazards were studied.本数据集收录了PPRN在各开发阶段的边界范围。 此类边界的核心特征为：其由官方行为依法设立，并自指定生效日期起产生法律效力。 具体包含以下三类边界： - 依据PPR（自然型或技术型）划定令所列明的法定边界； - 与经批准的RPP所规范的风险暴露范围相一致的风险暴露范围，该经批准的边界类型为公用地役权（PPRN对应PM1，PPRT对应PM3）； - 与风险评估覆盖范围相匹配的研究范围。