EPA Guidance Note for Strategic Noise Mapping for the Environmental Noise Regulations 2006 (Version 2 – August 2011)

Revised Section 10: Mapping Methodology for Exposure Assessment - Post Processing and Analysis (October 2017)

Summary: The objective of the original Guidance note (version 2, August 2011) was to provide practical information, advice and guidance to designated Noise Mapping Bodies on the development of strategic noise maps under the Environmental Noise Regulations, and reporting of results to the EPA.

Published: 2017

Pages: 18

Filesize: 611 KB

Format: pdf


This updated methodology for the exposure assessment, based upon the noise mapping results, has been issued as a revised Section 10 (October 2017) of the original EPA Guidance document (2011).

The approach for Round 3 is based on the Small Areas Population Statistics (SAPS) published by the Central Statistics Office (CSO), GeoDirectory delivery point data from Ordnance Survey Ireland (OSi) and An Post, and PRIME2 building data from OSi.

The most recent Census was held on 24 April 2016, and published by CSO at various resolution levels, including Province or County, Province County or City, Regional Authority, Constituency, Electoral Division and Small Areas. Data is not made available at Census Output Area level; rather these are merged up to the Small Area Population Statistics (SAPS) level which provides for the highest level of resolution available to the location of the population. There are 18,641 SAPS covering Ireland in the 2016 Census output data1.

The GeoDirectory data products are developed by OSi and An Post to provide a single point location object for each building in Ireland. The complete dataset is available with the “GeoAddress Locator” product, and each point location has a number of attributes which may be useful in identifying both vacant and occupied dwellings.


1http://www.cso.ie/en/census/census2016reports/census2016smallareapopulationstatistics/ [Accessed September 2017]