Historic Landfill Sites is a spatial dataset. These are landfill sites which have been taken off the Authorised Landfill Sites when the waste licence status changes to either: - Licence expired: Some licences issued under the Control of Pollution Act 1974 were time limited and expired on the date specified in the licence. - Licence Revoked: Whereby the licence has been entirely revoked and is no longer in force; or - Licence Surrendered: Operator has successfully surrendered the licence which is no longer in force. Attribution statement Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.