The document discusses Hawaii's Clean Diesel Campaign and the Diesel Emissions Reduction Act (DERA) program. It provides an overview of projects funded through DERA grants and partnerships to promote strategies that reduce diesel emissions. These strategies include replacing older vehicles like school buses and dump trucks with new ones that produce lower emissions, and retrofitting existing vehicles to reduce emissions. The document outlines funding amounts received from 2008-2011 for clean diesel projects in Hawaii, and upcoming deadlines and opportunities for additional funding to replace older diesel vehicles with electric or hybrid options.