This is the simpler of the two questions. A safe level of radon gas is no radon gas. Radon gas is a carcinogen which causes lung cancer. The US EPA has put it plainly, stating, Any radon exposure has some risk of causing lung cancer.The lower the radon level in your home, the lower your family's risk of lung cancer..hile no level of radon gas is completely safe, as with most things in life we must balance the benefits and costs to find our own acceptable levels. We walk outside and work in the sun, exposing ourselves to ultraviolet radiation and increasing our risk of developing skin cancer.
Photo courtesy of the DC SHPO. The Old Stone House, located at 3051 M Street in Georgetown, was built in 1765, making it the oldest standing building in Washington, DC. The exterior of the house is constructed of locally quarried blue granite.
Stone Mountain, GA. Sponsored Topics. Stone Mountain is a city in eastern DeKalb County, Georgia, United States. The population was 5,802 at the 2010 census. It is an outer suburb of the Atlanta Metropolitan Area. The town is named for nearby Stone Mountain.