WILMINGTON, Del. (AP) — The Delaware City Refinery and state regulators have reached a settlement in a roughly five-year dispute centered on shipping crude oil.

The News Journal in Wilmington reports that regulators and the refinery have agreed to a deal "in principle" to resolve the dispute.

A broad outline of an agreement has not been publicly released. Michael Globetti, spokesman for the Delaware Department of Natural Resources and Environmental Control, told the newspaper that the deal was still being finalized.

Last year, regulators with the state agency issued a $150,000 fine to the refinery and its parent company for shipping crude oil to facilities not allowed under conditions of its permit.

The company has disputed the shipments were improper. They have insisted they have the right to ship crude anywhere.

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Information from: The News Journal of Wilmington, Del., http://www.delawareonline.com