The reason for the low degree of reduction in pollutant emissions in leachate and methane production removed from aerobic pretreated waste obtained in the study was that the (5-week) period of aerobic pretreated waste stabilization was too short. In summary, based on the obtained results, it can be concluded that the initial stabilization of waste under aerobic conditions prior to storage significantly reduces the emission of organic pollutants in leachate and biogas. However, 5 weeks aeration of the waste is too short a period to implement the obligations under the Landfill Directive 1999/314/EC on waste landfill after 2013.