The Helgerson Flats Industrial Center in Ottumwa is the latest industrial site to achieve certification through the Iowa Certified Site Program, the Iowa Economic Development Authority said. The 80-acre property is zoned for industrial use and is suitable for businesses that complement machinery manufacturing, automotive supply chain, food and beverage processing, and warehouse and distribution. The Ottumwa Economic Development Corp. worked in conjunction with Alliant Energy to certify the site, which is located two miles off U.S. Highway 63 and Iowa Highway 149 and is adjacent to an existing industrial park. Helgerson Flats Industrial Center joins 22 other sites in the state that have been designated as project-ready.