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OCR for page 12
H-12
APPENDIX A
CostBenefit Computations
AFIT is designed to assist fuel analysts in determining costs 2. Decommissioning costs to remove the diesel-related tanks,
associated with introducing an alternative fuel and benefits as piping, and equipment; and
measured by reduced emissions. It is not a costbenefit tool 3. Avoided construction costs of a new diesel facility in cases
offering the analyst the decision to use an alternative fuel or where significant expansion or new facilities associated
not. To this end, AFIT is structured around two cost and one with airport expansion required them.
benefit computation pages or tabs.
All costs should be entered per unit. For example, if the
Fuel Economics Costs
GSE fleet requires 200 filters to be replaced, then enter 200
Fuel economics costs consist of off-airport (costs outside the
and the cost per filter, for example $10.00, and AFIT will cal-
airport perimeter fence) and on-airport costs (costs incurred
culate the cost to convert into the cost per gallon and the
inside the perimeter fence). These include transportation and
annual cost of replacement. A simple financing cost calcula-
storage and storage-related costs (filtering, blending) and, in
tion is also supplied for the avoided diesel fueling system con-
the case of off airport, the cost of the alternative fuel. Costs
struction costs since these costs are likely to be significant and
are entered as a per-gallon charge, and AFIT sums them, using
financed over time.
monthly gallons-consumed information, into a total monthly
cost estimate for each cost component. Emissions
The calculations are simple addition, multiplication, and Baseline emissions are imported from an EDMS study. AFIT
division operations producing per-gallon and total costs in calculates the new inventories based on the fuel selected and
dollars for user reference to current monthly costs. the equipment at the airport. Differences are displayed on the
emissions and report tabs for the analyst to use for further
Equipment Costs
consideration in whether to adopt an alternative fuel.
There are three groupings on this tab.
1. GSE conversion costs to ready the equipment for the alter-
native fuel;
