Its staff numbers about five dozen, after reductions under its former director, Kristen Engberg.
But it is now facing reductions under the mandatory budget cuts known as sequestration.
Countries do not "bind" their tariff reductions under the IMF programmes, as they do at the World Trade Organisation (WTO).
"We're going to get more reductions under the rules," said Jeffrey R. Holmstead, the agency's assistant administrator for air and radiation.
The number of properties receiving rates reductions under these schemes is unclear, but it is clearly costing local authorities millions of pounds.
He called on the US and other countries opposed to placing emissions reductions under legal sanction to come forward with alternative ways of monitoring and correcting unfulfilled commitments.
Officials also estimate that they are collecting more in fines with the reduction schedule because judges actually dismissed more tickets and gave greater reductions under the old system.
Mr. Hagel said the Pentagon's reductions under the new bill would be about $41 billion, down from the previous estimates of $46 billion.
Mr. Hagel said the Pentagon's reductions under the new bill would be about $41 billion, down from earlier estimates of $46 billion.
This month, New Zealand refused to commit to a second round of emissions reductions under the Kyoto Protocol, the 1997 international agreement on reduction of greenhouse gases.
President Jacques Chirac of France began the conference's second and last week by implying that the United States was trying to get out of its promised reductions under the 1997 Kyoto protocol.
