WASHINGTON  (AP) — Turns out, it's going to cost taxpayers  $32 billion more than first thought to open and operate the nation's first  nuclear waste dump. — made public Tuesday — is that the  facility will cost over $90 billion. It's the first official estimate since  2001, when the figure was $58 billion.
 Already, some 64,000 tons  of radioactive spent fuel rods are stored at commercial reactor sites in 33  states, according to the Nuclear Energy Institute. Most of it is stored in  vault-like pools while some has been moved into dry-cask storage, where Nevada  lawmakers, who oppose Yucca Mountain, would like it to stay.
 Commercial nuclear power  plants now produce some 20 percent of U.S. electricity, but concern about waste  disposal has hampered the industry's growth.
 Yucca Mountain was  originally supposed to open in 1998 but has been beset by lawsuits and political  and scientific controversies. The best-possible  opening date is now 2020,  Sproat told  lawmakers at an Energy and Commerce subcommittee  hearing.
 The Energy Department did  succeed in submitting a required construction license application to the Nuclear  Regulatory Commission last month. The commission has up to four years to decide  whether to approve it — but that timeline, too, is  dependent on congressionally approved budgets.  
 Read full By  ERICA WERNER  (AP)