The Port of Vancouver USA is one of the first ports in the nation to replace regular diesel fuel with environmentally-friendly biodiesel for use in its own vehicles and heavy equipment. Biodiesel is a cleaner-burning diesel fuel made from vegetable oil, including recycled cooking oil. While pure biodiesel contains no petroleum, it can be blended with petroleum diesel to create a biodiesel blend. The Port of Vancouver will use a combination 20 percent biodiesel blended with 80 percent regular diesel, called "B20." Use of B20 biodiesel can result in a reduction of emissions by up to 20 percent, according to the U.S. Environmental Protection Agency.