The site was a former fertilizer plant in Jiading District of Shanghai and will be developed into a commercial and residential area. Preliminary investigation, detailed investigation and human health risk assessment indicated that the concentrations of arsenic and chromium in some parts of the site were higher than the acceptable risk levels. Greenment was entrusted to conduct the environmental supervision for the remediation project. The team included one chief inspector, one environmental supervision engineer and three supervisors.
Ex-situ stabilization was used to treat approximately 1,500 tonnes of contaminated soil at the site. Greenment conducted on-site supervision on the remediation scope lofting and foundation pit excavation to ensure the remediation scope met the requirements of the technical proposal. The process of ex-situ treatment was supervised to prevent secondary pollution and membrane leakage. The Completion Approval monitoring was supervised to meet the requirements of relevant standards. The transportation of treated soil was tracked to meet the requirements of the receiver site.