Risk Prevention Plan Floods in the valley of l'Oise — commune of Chevrières (60149)
__Origin__
The noise levels emitted by a given infrastructure during an average day are evaluated using numerical models producing isophone curves translated into noise zones, according to the; index recommended for all modes of transport at European level, namely the Lden index and l' index Ln.The isophone curves, described by the resource N_BRUIT_ISOPHONE_L thus serve to delimit the external borders and, where appropriate, internal noise zones by range of #x27; indices.
__Partner organisations__
DDT Oise
__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-7d037196-7074-46f2-89c0-d0766dfd83d0)
[See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/ae74bd9b2b1adbb46b4bce940e5ed70a84d7f52d)
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