ABERDEEN, Md. -- Federal officials say nearly a dozen safety standards were violated at an Army weapons-testing pond near Baltimore where three people have died this year.

The Labor Department's Occupational Safety and Health Administration said Thursday that it found seven serious violations at the facility in Aberdeen known as the "super pond."

OSHA began investigating after a civilian technician died while performing routine maintenance in the pond on Jan. 30. Four weeks later, two sailors drowned during a routine dive.

Among the serious violations were improper training for divers; allowing dives to be performed without a standby diver; and using breathing air for purposes other than breathing. OSHA also found four less serious violations.

Two sailors could face criminal charges in the deaths of the Navy divers.