So the way I see it this whole movie is Thomas Jane's fault. At the beginning of the movie it is implied that the shark that escaped jumped over the fence. Jane tells Rapaport to raise the fences (which he is somehow able to do in a record time). Now the sharks a can't jump the fence so they have to sink the station to get the fences low enough to get through. Enough shaming of the good Dr. Susan!
Also why would the station be using natural gas for their ovens? Wouldn't they be electric?