(Reuters) – U.S. President Joe Biden’s administration will approve a major and controversial oil drilling project in Alaska on Monday, according to a source familiar with the matter.

The decision to move ahead with the project by authorizing three drill sites in northwestern Alaska would come a day after Biden announced sweeping curbs on oil and gas leasing to protect up to 16 million acres of water and land in the region.

Earlier on Sunday, the U.S. Interior Department unveiled actions to make nearly 3 million acres of the Beaufort Sea in the Arctic Ocean “indefinitely off limits” for oil and gas leasing, building on an Obama-era ban and effectively closing off U.S. Arctic waters to oil exploration.