Troops were put to work cleaning up the site an hour before the President's arrival.

In 1980, the state and federal governments agreed to clean up the site.

The responsibility of cleaning up the site was given to state and federal agencies.

He plans to clean up the site this summer and start construction next year.

It has spent about $40 million so far to clean up the site.

But no one is stepping forward to clean up the site.

As yet there has been little interest due to the huge cost involved with cleaning up the site.

If necessary, the owner would be responsible to clean up the site.

From 1987 to 1991 a study was done to determine the best method of cleaning up the site.

Before any development could take place, the city had to clean up the site.