The file biota_regional_assessment_pahs.html contains regional assessments of polycyclic aromatic hydrocarbon concentrations in biota using environmental thresholds from the 2020 assessment of the UK's Clean Seas Environment Monitoring Programme (CSEMP). The data underpinning this assessment can be found in the files biota_data.csv and biota_regional_data.csv.

This is one of a series of regional assessments of contaminants and biological effects in biota. The series consists of regional assessments using environmental thresholds for metals, polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), PAH metabolites, imposex and EROD. These are described in the resources:

• biota_regional_assessment_metals.html
• biota_regional_assessment_pahs.html
• biota_regional_assessment_pcbs.html
• biota_regional_assessment_pbdes.html
• biota_regional_assessment_metabolites.html
• biota_regional_assessment_imposex.html

• biota_regional_assessment_erod.html
  There are also regional assessments using human health thresholds for metals, PAHs, PCBs and PBDes, which are described in the resources:

• biota_regional_assessment_metals_health.html

• biota_regional_assessment_pahs_health.html
• biota_regional_assessment_pcbs_health.html
• biota_regional_assessment_pbdes_health.html