In Trondheim Rambøll has successfully treated 3.500 tons of soil polluted by hydrocarbons. A former army camp site is turned into a residential area including a kinder garden. Through decades spill and leakage of fuel and oil from vehicles have polluted huge quantities of soil. Rambøll has treated the soil with a mixture of microorganisms and nutrients. After 12 weeks treatment the soil is sufficiently clean and may be used as children’s playground.