The Mapleton facility is located on approximately 6 acres along U.S. Route 24 in Mapleton, Illinois. It was built in 1988 with actual plant startup in 1990. The plant consists of three main areas: the control building, the manufacturing area, and the loading area. The plant routinely operates 7 days per week, 24 hours per day. Mapleton is located about 15 miles south of Peoria, Illinois, and 140 miles from St. Louis, Missouri.