Nearly two-thirds of this year's winning projects, including one in Pittsburgh, were unsuccessful in past TIGER compeitions.

Provisions prohibiting post-incident drug testing that would have taken effect on Aug. 10 are pushed back to Nov. 1.

The consent decree outlines the limits the companies are to achieve on emissions of nitrogen oxides and sulfur dioxide.

Unresolved issues include length of phase-out schedule and the amount of financial aid for developing nations.