Both companies paid for the initial state-supervised cleanup of the pump area.
On May 15, 2009, the initial cleanup of the river began.
But oil spills can have effects that last long after the initial cleanup.
After the sarcophagus was built around the reactor and the initial cleanup, they let people come back and take some of their belongings away.
Mr. Kean said he would ask the Legislature for $20 million for the commission's initial cleanup and pollution control programs.
No follow-up mitigation existed to deal with asphalt formation and problems that resulted after the initial aggressive cleanup.
But after Mr. Bush left, the initial cleanup took a different form.
The initial cleanup is set to be completed by November 2009.
The site was contaminated with radioactive materials and an initial cleanup was attempted in 1967.
The state government has spent $1.5 million on an initial cleanup.