Contaminated land regime The contaminated land regime contained in the Environmental Protection Act 1990, Part IIA ( EPA 1990, Pt IIA) places a statutory duty on local authorities to identify 'contaminated land' in their area and to secure remediation. If a site is investigated or designated as contaminated land, the local authority will look first for any Class A 'causers' or 'knowing permitters'. If no Class A persons can be found, the current Class B owner or occupier may be liable. See Practice Note: Contaminated land—who may be liable? Tenant legally excluded as Class B occupier paying a rack rent Where there are no Class A persons and two or more Class B persons have been identified (eg the landlord as owner and the tenant as occupier), the statutory guidance seeks to exclude from liability a Class B person who does not have an interest in the capital value of the land in question. It excludes from liability any Class B person who: • occupies the land under a licence, or other agreement,