LOS ANGELES (AP) — A California water board has ordered Shell Oil to clean up a Carson neighborhood that was built on top of an oil storage facility that could hold up to 140 million gallons of oil.

The Los Angeles Regional Water Quality Control Board on Friday required the company to come up with a series of plans to clean up the site that the board will review.

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The oil company operated the storage facility from the 1920s to the 1960s, when they sold the property to a developer who built a neighborhood of 285 homes.

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Resident Barbara Post says she is pleased with the decision.

A spokeswoman for Shell says they are reviewing the order.

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