Federal cleanup cost for Gulf spill tops $123M million and rising; now nation's most costly

Federal officials say cleanup costs for the catastrophic Gulf oil spill have topped $123 million.

That's more than the $121 million spent on the Exxon Valdez spill, though that amount hasn't been adjusted for inflation.

The National Pollution Funds Center says the money has been doled out to state and federal agencies directly involved in the cleanup. Those agencies include state National Guards, whose soldiers have built walls to protect shorelines from pollution, as well as the National Oceanic and Atmospheric Administration, which projects the oil slick's trajectory.

Another agency is the U.S. Fish and Wildlife Service, which rescues oil-soaked birds.

The center administers a federal trust fund that collects a tax from the oil companies for use in cleanups.