Date Published: 08/26/2007 [Source]
Radon mitigation work is complete at two of five Norwalk schools identified with elevated levels of the gas this spring, and the remaining three will open this year with 80 percent to 90 percent of mitigation work complete, said Mark Gorian, district facilities and maintenance director.
Radon, the second leading cause of lung cancer behind smoking, is a naturally occurring, colorless, odorless and tasteless gas that comes from the decay of radium in the ground.