One of the aims of [15] was to create Integrated Systems of Electronic Registers o f Waste (SIRER),
allowing all data, concerning the type of waste, to be available and replacing the previous systems of registers
maps. The main directives of the Portuguese legislation for waste, adapting the directives of the European
Commission, are given by the Environment Ministry (MA), which supervises the National Waste Institute
(INR). The INR supervises the Management Entities of Municipal S o l i d Waste (SGRSU), Green D o t System
(SPV) and the Municipalities.