Richard Heiderstadt and Bobby Toups have been named division managers of Cardno USA, the Portland, Ore., unit of Cardno Ltd., the engineering firm based in Brisbane, Australia. Heiderstadt's new title follows Cardno's acquisition last October of TEC Inc., Charlottesville, Va. He remains president of the firm, now called Cardno TEC Inc. Cardno also is set to complete on March 1 its acquisition of ATC Associates Inc., Lafayette, La. , of which Toups is president. After the transaction closes, the firm will become Cardno ATC Associates. Cardno TEC also says it has named to its board of directors: U.S. Army Lt. Gen. Robert Van Antwerp, U.S. Air Force Major Gen. Daniel Dick and U.S. Navy Rear Adm. Robert Phillips, all retired from their respective services.