A follow-up study has not been completed, said Kelly Keith, a spokeswoman for Dr. Plummer.
"It's the largest single development project we have completed," said Walter L. Isenberg, Sage's chief executive.
"The tax issue is finished, over, completed," said the senator from Kentucky.
"We're talking about an endeavor that will take 10 or so years to get completed," said one official.
Turkey's Southeast Anatolia Project includes more than 30 major upstream dams, the majority of which are completed, said Mr. Alwash.
"This new study will never be completed," said Dr. Lothstein, who participated in the preliminary stages of the 1994 study.
"I have to be very careful about not prejudging these events before investigations are completed," said Obama.
The person, who requested anonymity because the deal isn't completed, said discussions between top company executives intensified two weeks ago.
"We are close to having the project ranking completed," said Mark N. Mauriello, the commissioner of the environmental agency.
"The new policy will be considered by cabinet after these comprehensive public awareness and consultations are completed," said O'Neill.
The ruling raised doubt that the transaction will be completed, said Tom Burnett, who advises large investors on mergers.
