Workers for most of the day had been pouring gel into the well, situated on Imperial Highway between Truro and Condon avenues in Hawthorne.
The leak sprang Thursday and though workers had managed to stop the flow of water and methane, they have been trying to fully cap it; on Monday they poured mud into the well in an attempt to get it shut.
The well-control company assembled a piping system to relieve pressure
on the well, then began pumping in mud in hopes of capping it.
By 2:45 p.m. Monday, the flow of water and methane had stopped, but crews continued to inject mud and other materials to fully plug the well, authorities said.
Methane gas naturally occurs in pockets under much of the Southern
California flatlands, geologists say.
When collected by pipelines, the odorless methane is scented with an
additive, then piped into businesses and homes as "natural gas.''
Authorities say that methane itself is not poisonous but can be deadly if it
displaces oxygen in an enclosed space.