Clifton resident Elannah Rood is not allowed to play outside during the day because her mother, Deborah Rood, is afraid the 6-year-old will inhale toxic fibers.

Just up from the Roods' home on Braddock Road, construction workers are building King's Chapel on a large deposit of naturally occurring asbestos, a yellowish dirt that contains fibers the U.S. Environmental Protection Agency (EPA) has labeled as “harmful to human health” if released into the air.