In 1921, oil was discovered in Long Beach, California, and the city became one of the nation’s biggest boomtowns — drilling 1,450 wells.

The port city once produced one-fifth of the nation’s oil supply, more than 60 million barrels per year. That has been scaled back to about 8 million barrels per year, and city officials hope it will dwindle to zero by 2035.

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Now, a proposal to spend $1.2 billion to seal up operational oil wells has been discussed by the city’s environmental committee.

Officials have said they are dedicated to green energy and want to follow Democratic Gov. Gavin Newsom’s lead, even if the process takes 15 years and costs taxpayers money.

Newsom has directed the state’s Department of Conservation to phase out oil drilling by 2045. He has also proposed banning any new wells near homes, hospitals, schools, and other sensitive areas.

“We are committed to protecting public health, the economy and our environment as we transition to a greener future that reckons with the realities of the climate crisis we’re all facing,” Newsom said in a statement.

Long Beach has set aside $59 million to fund the capping endeavor, and the state will pitch in $967 million. Individual owners will have to pay about $10,000 each, according to the Long Beach Post News.

The city receives $45 million a year from oil production. It’s unclear how that amount will be backfilled once the wells are shut down. In addition, the oil industry employs 1,000 workers who will need to transition into other careers.

Aside from the land-based wells, drilling occurs at hundreds of sites off the shores of Long Beach and neighboring Huntington Beach.

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Local politicians called for the end of oil platforms when a tanker ship ruptured a pipeline along the seabed in October, spewing out 3,000 barrels' worth of oil.

The disaster prompted the closure of one of the nation’s biggest airshows at Huntington Beach, featuring the U.S. Navy Blue Angels, the U.S. Air Force Thunderbirds, and the Royal Canadian Air Force Snowbirds.