ADDING UP THE ASTRODOLLARS Teevee reporter Ted Oberg finds that the Harris County Sports and Convention Corporation expects to make about $4 million a year on the New Dome, once it’s cleaned up and converted into 350,000 sq. ft. of exhibition space for things like, say, bowling competitions, hardware shows, or the Quidditch World Championships. “[But] costs,” cautions Oberg, “will eat up $3.9 million of it.” Still, HCSCC chair Edgar Colon seems undaunted by these figures: “It will be self-sufficient.” [abc13; previously on Swamplot] Rendering: New Dome PAC