This dataset contains the delimitation perimeters according to the stage of the PPRN; development of the PPRN.
The characteristic of a perimeter is to be the consequence of an official act and to produce its effects from a defined date. It can be:
— prescribed perimeter set out in the prescribing order of n°#x27; a PPR (natural or technological);
— perimeter d' exposure to risks that corresponds to the perimeter regulated by the approved PPR.
This approved perimeter is a public utility easement (PM1 for PPRNs and PM3 for PPRTs);
— perimeter d' study corresponding to #x27; envelope in which hazards have been studied.
__Origin__
The boundaries of a restricted zone are represented on the graphical documents of the PPR.
Regulatory limits are generally set on natural phenomena, which do not follow cadastral or administrative boundaries.
A PPR determines the boundaries of the different restricted zones according to the calculated right-of-way of the site’s hazardous phenomena.
Some PPRs may sometimes contain regulations associated with linear or punctual figures (cavities, runoff axis...).
The linear and point graphics primitives are to be used in these cases respectively.
__Partner organisations__
DDT Ariège
__Links annexes__
* [XML metadata view](http://ogc.geo-ide.developpement-durable.gouv.fr/csw/all-dataset?REQUEST=GetRecordById&SERVICE=CSW&VERSION=2.0.2&RESULTTYPE=results&elementSetName=full&TYPENAMES=gmd:MD_Metadata&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&ID=fr-120066022-jdd-5340c7d7-7f9d-451e-9bb3-15ed13856d13)
* [COVADIS data standard:
Scope of PPRN](http://geostandards.developpement-durable.gouv.fr/afficherPageStandard.do?jeu=N_PERIMETRE_PPRN_AAAANNNN_S)
[See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/770deafa16238bafb38e008088dfb90baec732d8)
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