A dive team works Monday below the surface on the New Mills Dam in Gardiner during an inspection of the impoundment on Cobbossee Stream.

Joe Kacer Jr, left, and his son, Joe Kacer III, open the gates on the New Mills Dam in Gardiner on Monday. The elder Kacer owns Commercial Divers Inc., of Bangor, which is inspecting the impoundment on Cobbossee Stream.

Diver Dan Scovil inspects a gate on the New Mills Dam in Gardiner on Monday. An underwater inspection of the impoundment on Cobbossee Stream was conducted by Commercial Divers Inc., of Bangor.