The Route To Cleaner Air: Wisconsin school bus company retrofits 43 school buses through NSTA and DNR grants

摘要

As part of two federally funded grant programs, Dousman Transport Co. Inc., a privately owned, Wisconsin-based school bus company, has begun to retrofit 43 of its 110 school buses with emissions reduction technology. The first grant was funded by the National School Transportation Association (NSTA) through the EPA's Clean School Bus program, allotting USD500,000 to retrofit post-1990 buses with emission control devices. Dousman Transport was awarded USD23,000, which it supplemented with 12% in-kind contribution for maintenance and installation of the devices. Through the NSTA grant, 14 of its 1997 and newer Thomas EF buses were retrofitted with Donaldson diesel oxidation catalysts (DOC). Another eight Blue Bird TC 2000 school buses were installed with a combination of the catalyst with a Spiracle Closed Crankcase Ventilation (DOC/CCV) filtration system which includes a replaceable two-stage filter. With the installation of the DOC, emissions reduction is expected to be 15 to 30% and 30 to 50% reduction for the buses equipped with the DOC/CCV system.