RESUMEN
Under President's Executive Order 915/1982, the Malagrotta waste disposal plant has been surrounded by a water-proof ring. This study reflects a eight-year research activity about "the Plant's steadiness and its impact on the land; hygienic monitoring of aquifers, air quality control and sound pollution; health and safety of workers; disinfection and land reclamation". For surface subsidence to be measured, 21 spots were monitored and 30 piezometers were set up in adjacent critical areas, both inside and outside the plant. Some of them were also used to pick up water and test it for chemical and microbiological purposes. Samples of leachates were analysed, air quality assessed and sound tests carried out. Overall outcomes show good performance in terms of interaction between plant, hydro-geological regimen and possible impact on the surrounding land.
