Investigative strategies and risk assessment of old unlined municipal solid waste landfills

摘要

A case study was carried out at an old landfill site(Riet site) located in Winerthur, northern Switzerland. The Riet site contains mainly municipals solid wastes(MSW)comprising four discrete unlined landfill compartments, the oldest of which dates back to 1918. One goal of the case study was to assess the investigative techniques used to determine the risk of groundwater contamination. Waste compartments and leachate plumes were delineated with the electromagnetic method EN31 and with tracer methods.