**2.2 Functional unit**

The functional unit (FU), central concept in LCA [11, 12], is the measure of the performance delivered by the system under study [12], and definition of a FU is essential in LCA [13]. According to [8] for the LCA of waste management systems, the FU of the study could include:


 For the purpose of this study, a suggested FU is defined as amount of waste to be stored during the year—waste other than hazardous—and recovered and stored during the year at Kosodrza landfill (see **Figure 2**). Time coverage is year 2015.
