Officials today announced plans to transfer ownership of a small portion of one of the largest undeveloped tracts of land in the twin cities metro area from the Department of defense. Just under 40 acres of the 24 hundred acre site of the former Twin Cities Army Ammunition plant will be turned over to Ramsey County and the city of Arden Hills for a maintenance facility and a new city hall. Officials say they hope the transfer is the first step in opening up the land to more public use and development.