This is an archived article that was published on sltrib.com in 2014, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

The Utah House passed legislation Wednesday limiting when animal shelters may use carbon-monoxide gas to euthanize animals.

The bill, HB10, sponsored by Rep. Angela Romero, D-Salt Lake City, only allows shelters to use gas if other means would be unsafe to personnel or cause "unacceptable levels of stress" to the animal.

The shelter cannot euthanize more than one animal at a time in a carbon-monoxide chamber unless each animal has a specific compartment and the measure also requires the shelters to adopt policy and training standards for employees.

The measure passed the House 61-8 and goes to the Senate for consideration.

— By Robert Gehrke