Sustainable Mining and Metallurgy

The legacy site of a gas station in Qinghai Province has been idle for many years after its closure, it is now planned to be developed into public facility land. According to relevant laws, regulations and policy requirements, soil and groundwater pollution investigations should be conducted on the land before its development and utilization. According to the pollution identification,preliminary investigation, detailed investigation and risk assessment results, there is petroleum hydrocarbon (C10-C40 ) pollution in the soil. The cause of the pollution is closely related to the long-term leakage or “running, dripping, and leaking” of oil materials in the underground oil depot. The pollution depth is 2 ~ 9 m, and the soil volume is 8 480. 29 m 3 . This survey and evaluation work can provide a basis for the subsequent risk control or remediation of the gas station plot, and provide effective reference for soil pollution investigation and risk assessment of similar gas station plots.