Federal officials say more than 250,000 gallons of oil have been recovered from the site of a pipeline leak near Chicago.
But U.S. Environmental Protection Agency on-site coordinator Sam Borries said Wednesday that it's still too early to say how much oil has spilled.
The pipeline's owner, Enbridge Energy Partners, said the pipeline would be returned to service early Friday. It was shut down shortly after the leak was discovered Sept. 9.
The pipeline is part of a system that transports oil from western Canada to U.S. refiners, and regional gas prices increased after it was shut down.
Enbridge executives say the company is making good progress cleaning up the spill area in Romeoville, about 30 miles southwest of Chicago.
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