Concentration of thirty elements in various process streams (input and output) was measured in laboratory (see Table 2). The elements investigated for their balance in SRF production process were: chlorine (Cl), arsenic (As), cadmium (Cd), lead (Pb) and mercury (Hg). These are potentially toxic elements which could be found in fuel product. It is reported [16] that in the RDF production test runs chlorine, lead and cadmium have been often found concentrated in fuel product. The SRF production process evaluated in order to establish elemental balance by using MFA is shown in Fig. I. In the given MT process, incoming waste material stream i.e. C&IW is subjected to mechanical separation to produce SRF. This process only does the mechanical separation of the incoming material and no material transformation takes and moreover, it docs not store any material in it. Based on the law of mass conservation; the input mass balance of element (s) was calculated from sum of its mass in output streams. Metals of each stream were not included in the elemental balance.