Answers are expected this week from the Army about the extent of chemical weapons dumped off Hawaii.

In response to our "Buried at Sea" series uncovering disposal of thousands of tons of chemical weapons, Hawaii's congressional delegation demanded more information from the Pentagon about what's out there and how it can be cleaned up.

"I don't accept the military's view that somehow this is prohibitively expensive to deal with. I don't buy that. Number one, I think it's a matter of responsibility, it's a matter of conscience, I think it's a matter of the justifiable use of military lands here in Hawaii and beyond," says Representative Ed Case, D-Hawaii.

"Pay some real close attention to what the probabilities are of any accidents occurring or any toxic effects, and once we find that out, we'll zero in on that," says Representative Neil Abercrombie, D-Hawaii.