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Environmental Noise — Belfast Agglomeration Lden (Round 3) source files

Strategic noise mapping for the Belfast Metropolitan Urban Area agglomeration: combined noise from all sources (road, rail, industry, airports, ports) over 24 hours weighted by time of day (Lden). Round 3 (2017) under the EU Environmental Noise Directive 2002/49/EC. Polygons are the standard 5 dB…