DDT 91 — Perimeters of HERAKLES’ Technological Prevention Plan (PPRT) — ISOCHEM.

The PPRT d'HERAKLES — ISOCHEM was approved on 19 September 2014. This dataset contains the boundaries at the different stages of the PPRT; development of the PPRT. The characteristic of these perimeters is to be the consequence of an official act and to produce their effects from a defined date. It is: — prescribed perimeter set out in the PPRT prescription order, — perimeter d' study corresponding to #x27; envelope in which hazards have been studied. — perimeter d' exposure to risks that corresponds to the perimeter regulated by the approved PPR. This approved perimeter is a public utility easement (PM3 for PPRTs). __Origin__ Geometric modelling depends on the type of l' challenge and its modeling in the data source or geographical repository from which it comes. An issue is represented by a polygon with a spatial resolution sufficient to appraise s' it is concerned by one or more zones of #x27;aira. __Partner organisations__ DDT Essonne __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-a22823b8-cbc5-4045-94bc-1909cbfccd82) * [COVADIS data standard: Risk Prevention Plan PPRN PPRT](http://geostandards.developpement-durable.gouv.fr/afficherPageStandard.do?id=15) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/ee64135e1a8c06c7c6ed2e06c76bc523ab887993)