Seveso Establishment Tier According to Annex I and CID 2022/1979 4.3 Valid None Data Dictionary Vocabularies Eionet Data Dictionary Lower Tier Seveso Establishment Lower Tier classification based on the presence of dangerous substances in quantities above the Lower-tier and below the Upper-tier requirements in Annex I Part 1 and 2, Columns 2 and 3 Valid Data Dictionary Vocabularies Eionet Data Dictionary Seveso Establishment Tier According to Annex I and CID 2022/1979 4.3 Upper Tier Seveso Establishment Upper Tier classification based on the presence of dangerous substances in quantities above the Upper-tier requirements in Annex I Part 1 and 2, Column 3 Valid Data Dictionary Vocabularies Eionet Data Dictionary Seveso Establishment Tier According to Annex I and CID 2022/1979 4.3