Natural Gas Leak Halted at Aliso Canyon Storage Facility


Aliso Canyon, CA  – Southern California Gas Co. (SoCal) officials reported finding “a small natural gas leak” Monday afternoon at the Aliso Canyon storage facility above Porter Ranch but said it was “quickly isolated and stopped.”

The gas leak, which was discovered at 4:50 p.m. Monday, was located in an above-ground pipe used to withdraw natural gas from the reservoir, Gas Co. officials said in a courtesy email notification to interested parties sent at about 9:30 p.m.

Monday’s gas leak was at least the fourth at the Aliso Canyon field since Oct. 23 — when a natural gas storage well operated by the Gas Co. began spewing an estimated 100,000 metric tons of methane in the worst natural gas leak in U.S. history.

The nearly four-month leak that displaced some 8,000 area families and sickened many was apparently caused by damage to the well casing several hundred feet underground though state officials have not yet released the results of their investigation.

Meantime, the gas company will pay a $4.3 million settlement for failing to quickly report its Aliso Canyon natural gas leak last fall near Porter Ranch, which sickened and displaced thousands of residents for months, the Los Angeles County district attorney announced Tuesday.

The gas company agreed to pay the settlement after pleading no contest to a misdemeanor charge of failing to immediately report the Oct. 23, 2015, gas leak, the largest in the nation.