FILE - In this Dec. 9, 2015, file pool photo, crews work on a relief well at the Aliso Canyon facility above the Porter Ranch area of Los Angeles. A year after a leaking well near Los Angeles spewed natural gas for nearly four months and drove thousands of families from their homes, a White House task force is recommending dozens of changes to curtail leaks from the nation’s 400 underground natural gas storage wells. (Dean Musgrove/Los Angeles Daily News via AP, Pool, File)
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