School Bus Calculator
(TOOL)
July 2004
Development of the School Bus Emission Calculation Tool was supported
by a grant from the Emission
Inventory Improvement
Program to the Puget Sound Clean Air
Agency. 
The program was developed in MS Excel.
The School Bus Emission Calculation Tool (TOOL) is designed for use by
school district fleet managers and state and local air pollution authorities
to calculate the air pollution reductions that can be achieved by retrofitting
fleets of school buses. The TOOL calculates the annual emissions exhausted
by buses for an existing bus fleet and for a theoretical future bus fleet,
by taking into account retrofitting with control devices and/or using
a cleaner burning diesel fuel. This tool will help organizations predict
the reduction in pollution based on retrofitting buses and/or using cleaner
fuels and will allow state and local agencies to update their emission
inventories to reflect area school bus retrofit projects.
Support for the TOOL is provided by the Puget Sound Clean Air Agency.
For questions or comments, please contact Amy Fowler. Her phone number
is (206)689-4017 or (800)552-3565 (toll-free in Washington). Her email
address is amyf@pscleanair.org
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