Figure 1: Overall model structure

Text description of figure

The steps illustrated in figure 1 are explained below:

1. Is the landfill an existing landfill (Brownfield) or a new landfill (Greenfield)?
2. If the landfill is a Brownfield landfill then input current asset value; or
3. If the landfill is a Greenfield landfill input pre-operation capital expenditure
4. Input site specific engineering data, financial and other data using templates
5. The model then calculates the Indicative Base Cost (IBC) based on zero Net Present Value (NPV) over the life of the site.
6. The model produces outputs of the IBC and cashflows
7. The user can input other factors such as waste reduction policy, levies, market sensitivities, political considerations
8. User sets gate rate on the basis of the calculated IBC and other factors