In this Jan. 7, 2016, file photo, a sign declares the boundary line of the Southern California Gas Co. gas fields where a gas well was leaking methane daily near the community of Porter Ranch in Los Angeles.
In this Jan. 7, 2016, file photo, a sign declares the boundary line of the Southern California Gas Co. gas fields where a gas well was leaking methane daily near the community of Porter Ranch in Los Angeles. Michael Owen Baker AP
In this Jan. 7, 2016, file photo, a sign declares the boundary line of the Southern California Gas Co. gas fields where a gas well was leaking methane daily near the community of Porter Ranch in Los Angeles. Michael Owen Baker AP

Largely invisible network of pipelines, gas storage presents regional methane risk

February 06, 2016 04:01 PM

UPDATED February 07, 2016 08:18 AM

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