Site map of Costco, a proposed members-only big box retail store on nearly 21 hectares north of Northeast 36th Street and east of Interstate Highway 35 at Ankeny, was approved by the Ankeny Planning and Zoning Commission on Wednesday. Although the site plan does not require further city approval, construction of the 198,250 square foot facility is unlikely to begin until 2022. Infrastructure, including sewers and streets, is to be installed on the site. site and, pending City Council approval, work will likely not begin until spring 2022, according to a city spokesperson. Costco’s plans include building a retail warehouse, tire center and distribution center, the company’s first in the Midwest, according to a city document. An autonomous fuel installation is also planned. The project is planned in a development called Specter 36, a 125-acre area east of Interstate 35 and north of NE 36th Street that is expected to include commercial and multi-family developments.