It isn't clear what caused the leak in the oil and natural-gas production well, about five miles from the airport for Deadhorse, a town devoted to servicing the giant Prudhoe Bay oil fields, which began producing 40 years ago.
A federal official says crews in Alaska are ready to shut down an oil well that is misting natural gas on the frozen North Slope, but officials say it's too unstable for responders to get close.
The network said other quantities of natural gas were leaking from the site along with crude oil and investigations were underway to find out the causes of the accident.
Based on aerial pictures, the release appeared to be contained to the gravel pad surrounding the well head and never reached the surrounding tundra, BP said in an earlier statement.
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Responders were unsuccessful on Friday night due to damage to a pressure gauge. The spray of crude, along with "minor" oil leakage over the past few days, was fairly isolated and stopped leaking altogether Sunday, according to a statement from the Alaska Department of Environmental Conservation.
The leak was discovered on Friday and a team from BP, the Alaska Department of Environmental Conservation (ADEC), U.S. Environmental Protection Agency and local government was brought in to coordinate efforts. The BP-owned well was also leaking crude oil, which stopped after authorities activated a safety valve yesterday (April 16). Hilcorp Alaska has discovered several oil and natural-gas leaks in pipelines, but ice made had it impossible to fix the leaks. "There have been no reports of impacted wildlife". Afterwards, BP must coordinate a cleanup with its internal oil spill response organization and Alaska Clean Seas, a nonprofit that specializes in oil spill response. The second leak is still leaking natural gas, as well as a small amount of crude oil said BP.
Various state and federal agencies are gathering at BP's North Slope command post to respond to the situation.