As part of King County International Airport’s efforts to reduce its carbon footprint, the airport recently transitioned its entire regular diesel fleet to renewable diesel.

“We have 45 pieces of equipment and trucks that will be renewable diesel,” said Colin Douglas, Maintenance Manager at the airport.

Now instead of spewing higher levels of pollutants like nitrogen oxides, particulate matter and carbon monoxide, all the airport’s heavy-duty equipment, from generators to snow plows and fire trucks, will use renewable diesel. Renewable diesel is primarily made from used cooking oil and inedible animal fats left over from processing meat, according to the U.S. Department of Energy (DOE). Renewable diesel offers multiple benefits, including reduced greenhouse gas emissions and improved air quality. Read more.