Galveston-based dredging contractor Callan Marine has been awarded a $136 million contract from Port Houston to dredge segment 1C of the Houston Ship Channel Expansion, under the port's Project 11 program.Callan will use its recently christened 32-inch cutter suction dredge, the General Arnold, among the newest, largest and most environmentally friendly cutter suction dredge in the U.S.