State oil and gas regulators are looking for the source of methane gas leaking into residential water wells after an explosion.
The Colorado Oil and Gas Conservation Commission says Petroglyph Incorporated agreed to shut down gas wells near the River Ridge Ranch housing development outside Pueblo during the investigation.
The commission says Petroglyph will also re-plug a well that was shut down in 1972 in case it is the source of the methane leak.
The commission began testing water wells in the development after an explosion in June blew the roof off a well house. Tests of 37 water wells in the development found significant amounts of methane in 11.
The commission says it could be a while before the leak tracked down.
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