Williams continues clean-up at mystery 'seep'

Luke Johnson

 19 March 2013 22:50 GMT

Crews continued to clean up what was described as an underground "seep" of an unknown hydrocarbon near a creek running alongside a planned expansion of a Williams processing plant in Western Colorado.

The leak was discovered on 8 March when Williams crews were doing some preliminary construction work at the site near a right-of-way owned by the midstream company outside the town of Parachute, about 322 kilometres west of Denver.

As of Tuesday, hydrocarbons were still "seeping" from beneath the surface as 20 Williams workers used vacuum trucks to clean up.

Williams spokesman Tom Droege said it had not yet been determined what the hydrocarbon was.

"We don't know what it is. It looks like a lighter hydrocarbon, like a condensate, visually, but it has been…

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