Chlorine Gas Leak at CA Water Plant

Wednesday, September 13, 2017 @ 09:09 AM gHale

A chlorine gas leak at California’s North Marin Water District’s Stafford Lake water treatment plant prompted a hazardous material response Friday.

A call for a gas leak came in Friday at 4:20 p.m. at the water district’s plant at 3015 Novato Blvd., near the lake’s dam.

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A small amount of chlorine gas leaked and ended up contained, shut down and neutralized before emergency crews arrived, said Novato fire Capt. Kyle Dague. Novato fire crews responded along with the Marin County Hazardous Materials Response Team.

Water district staff was replacing a cylinder carrying chlorine in a containment room, when they realized a sealing valve was not closing properly, officials said. “Less than one pound of chlorine” escaped before the leak was stopped, according to water district officials.

The leak was shut down and equalized through the containment room’s automatic chlorine gas neutralization system, officials said.

Water district officials said the source of the leak was “an apparently faulty gasket seal on a gas storage cylinder.”

The leak was determined not to pose any safety threat to the public.

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