The EA report was released on August 17, 2009, including detailed plans for the configuration of the interchanges along the new highway. The route would run parallel to and east of Lake Ridge Road, partially overlapping the current route of Halls Road and partially along a new alignment one lot to the east. Both Halls Road and Coronation Road will be re-aligned to accommodate the new highway. It would be six lanes throughout its length, with a concrete Ontario Tall Wall as a median. Highway 412 will cut into Lynde Creek, a small waterway that flows out to Lake Ontario.