COLUMBUS (AP) - A week after the U.S. Army Corps of Engineers halted construction of an underground fuel pipeline across southern Ohio, the general contractor on the job quit.

Marathon Ashland Petroleum said H.L. Crouse Construction of Perrysburg voluntarily left the $100 million project. Marathon Ashland spokeswoman Jennifer Robinson said the company is negotiating with another contractor.

She declined to identify the contractor.

Just 29 miles remained on the 149-mile project when the government halted the project on July 2 because of environmental violations. Officials said construction will remain idled pending approval of a long-term environmental-corrections plan the company must submit to the Corps.

The pipeline is to cross eight Ohio counties, sending gasoline, diesel fuel, jet fuel and kerosene from a Marathon storage terminal in Kenova, W.Va., to a terminal in Columbus.