Associated Underwater Services was contracted through a Master Services Agreement with Seattle City Light to repair a crack that AUS divers had previously discovered during an inspection at Boundary Dam. AUS divers repaired a crack that was approximately 50’ long X 1/8” wide. The crack was on the Vertical Face, partially on the Ogee and was located under Spillway Gate #2. Divers drilled a series of holes that were angled at 45 degrees bisecting the crack. Grout ports were then installed and pumped with De Neef Polly Urethane Grout.