The Contaminated Land: Applications in Real Environments (CL:AIRE) has published 13 PFAS Site Profiles, developed as part of the Environment Agency PFAS Risk Screening Project, to support the regulation, investigation and remediation of sites where legacy per- and poly-fluoroalkyl substances (PFAS) may present risks to health and the environment. The guidance identifies potentially important industry sectors and activities that may be sources of PFAS release, including civil and military airfields and airports, Control of Major Accident Hazards (COMAH) regulated sites, fire-fighting grounds and fire stations, landfills, metal manufacturing and finishing, military bases, the oil and gas industry, paper and cardboard manufacturing, refineries and fuel sites, textiles, upholstery, leather, apparel and carpets (TULAC) manufacturing, and waste water treatment works, together with separate profiles covering aqueous film-forming foam (AFFF) and fire suppression systems.