Benzo (a) Pyrene Levels at Castlebar

Benzo(a)Pyrene (BaP) is measured as part of the particulate matter (PM10) sampling. Particulate matter sampled filters are extracted and analysed in the lab.

The latest available results for benzo(a)pyrene are:


Average Concentration: 0.34 ng m-3

Averaging Period: 1 Jun 2017 - 31 May 2018


This is below the limit value of 1 ng m-3