Abstract:Health risk assessments of soil polluted by heavy metals were conducted at a relocated electroplating site in Guangzhou using HERA package according to the methods from “Guidelines for Risk Assessment of Contaminated Sites”. The results showed that: ① the carcinogenic risk index of chromium(Cr6+) and nickel in soil at this site were 1.92×10–6 and 2.31×10–6 respectively, both higher than the regulated critical values of 1×10–6, which suggested they had higher carcinogenic risk. ② the non-carcinogenic hazard quotient of four kinds of heavy metals, namely, chromium(Cr3+), nickel, copper, silver were 16.7, 20.8, 4.68, and 1.48 respectively, they all exceeded the base value of 1.These indicated that chromium(Cr3+) and nickel had higher level of non-carcinogenic hazard in soil, and copper and silver had non-carcinogenic hazard in certain degree. ③According to the assessments results, we proposed a series of suggestions for the site management and restoration, such as how to determine the kernel repaired areas based on the content and distribution of pollutants, how to prevent these pollutants from spread, how to strengthen the protection and management of this site, and so on.