Removal of Underground Storage Tanks & Contaminated Soil. Environmental works associated with development of former service station site. The project included the removal of 17,000 litres of contaminated fuel/water, removal of 12 x Underground Storage Tanks, on-site destruction of USTs, ex-situ treatment of 200 tonnes of category A contaminated soil using chemical oxidation method, transport & dispose of 200 tonnes of category C waste soil.