There may be an underground natural gas leak if you see one or more of these warning signs:

• You smell natural gas outside. It will smell like rotten eggs.
• You hear a hissing sound coming from the ground.
• You see dirt blowing from a hole in the ground.
• You see a water puddle bubbling.
• You see a ring of dead grass.

If you notice one of more of these signs, there could be a natural gas leak. In case of a natural gas leak, you should:

Leave the area right away and call the gas utility, fire department or other emergency agency to report the leak.

Stay away from the area and keep others away until someone from the gas utility, fire department or other emergency agency says it's safe to return.