Working 12-hour days, KCI divers employed a mix of nondestructive testing techniques to inspect MOTCO’s four piers – which, together, totaled almost 2.8 miles of nearly 16,000 timber and concrete piles that were submerged in depths of water of up to 50 feet. The Portland District Office of Dive/ROV Operations and Safety led the Corps’ underwater execution of MOTCO’s pier inspections.