Synergy was engaged by Veolia to undertake water,sediment, sludge and land remediation at Ducos Landfillwhich services the entire city of Noumea. Ducos Landfill was in operation from 1963 and was overfilled, unlined,uncapped and unstable with primitive or non-existent leachate collectionfacilities. The waste disposed onsite included putrescibles, sewerage, oils,medical waste, building material, tyres and industrial mining waste.