This timely document is entitled Before You Dig, Garages & Petrol Stations, Guidance for Developers, EPUK. David Rudland et al.
EPUK say “This guide has been produced now because we anticipate alternative fuels will make many of the 8500 retail forecourts in the UK surplus over the next 5-10 years or so. Repurposing this kind of brownfield site presents particular challenges of the sort that drive some developers to seek greenfield sites instead.
The guide describes how petrol stations were constructed, operated, and decommissioned, outlining particular issues around decontamination and signposting towards further guidance. Tips for good practice and case studies appear throughout.“