Chapter 3 Arsenic, cadmium, nickel, mercury, benzo(a)pyrene and other polycyclic aromatic hydrocarbons

Northern Ireland

1. 11Assessment thresholds
2. 12Assessment criteria
3. 13Data quality objectives
4. 14Location and number of sampling points
5. 15Monitoring of polycyclic aromatic hydrocarbons
6. 16Background monitoring
7. 17Reference methods for sampling and analysis