Air Quality Monitoring Traffic Projects Data Dublin City Council measures air quality for Particulate Matter (PM10) emissions from Traffic at the Dublin Port Tunnel Northern Portals (Oak Park). 'This dataset contains Air Quality Monitoring Data from January to December 2010, in one excel workbook with graphs showing monthly trends. Daily readings are shown against EU limits. Monthly and yearly averages are calculated.

Dublin City Council measures ambient sound quality throughout Dublin with a network of sound monitors. This datasets consists of spreadsheets and raw data taken from monitoring sites around Dublin City. The sound level meters store continuous 5 minute sound pressure levels, with information from the individual daily files then collated into a spreadsheet with separate worksheet for each month of the year . The results of the sound level meter are given in Leq, which is the average sound level over the period of measurement. L95 and the L10 data is also provided. This is the sound level exceeded for 95% and 10% of the time respectively. The sound monitoring network helps to validate the noise mapping grid dataset, which is available in the research zone.

Road Source Noise Model The dataset contains the noise model results for the Dublin Region showing population exposure to sound from traffic sources. The noise maps show colour coded areas in Dublin based on sound levels in 5 bands. These increment in 5 decibels. The night time band starts at 50 decibels and the 24 hour band starts at 55 decibels. There are two categories of sound sources mapped all roads and major roads (roads with more than 3 million vehicle passages per year). Traffic volumes are averaged to an hourly traffic count over a typical 24 hour day. The supporting dataset Total Traffic Volumes and Road Centrelines for Dublin City is also published on Dublinked. Dublin City Council revised the first set of 2007 road source noise maps to produce the current maps for June 2012. The 2012 Revision of Noise Maps and Action Plans are available to download in kml format at http://www.dublincity.ie/WaterWasteEnvironment/NoiseMapsandActionPlans/Pages/default.aspx