LOS ANGELES — The estimated cost of a massive gas well blowout that spewed methane uncontrollably for nearly four months and uprooted 8,000 Los Angeles families has more than doubled to $665 million, Sempra Energy announced Wednesday.
Southern California Gas Co., which is owned by Sempra, had estimated costs of $250 million to $300 million in February, but that was before courts forced the company to continue paying to temporarily relocate thousands of residents.
The gas leak at the Aliso Canyon storage facility was the largest-known release of climate-changing methane in U.S. history, according to scientists. It spewed an estimated 107,000 tons of methane.
It sickened residents in Porter Ranch and surrounding San Fernando Valley suburbs who complained of headaches, nausea, nosebleeds and other symptoms as the gas wafted over neighborhoods.