最初由 肥猫 发布
I don't think that all Kanata area is on top of rock. From the following paragraph, it seems only south March area is on top of bedrock, and there is potential risk:
Homes under construction in Gatineau Park's Kingsmere and Meech Lake sectors and in South March outside Kanata are being built on top of bedrock that emits natural radioactivity. In 1974 airborne surveys revealed exceptionally high levels of background radiation in South March―so high, in fact, that they prompted the Geological Survey of Canada to follow up with extensive ground level testing. Sediment samples were collected from streams and creeks throughout the area. The highest values of uranium were found in the tributaries of Shirley Brook near the village of South March.
Health officials continue to disagree on the potential health risks, fearing legal retribution from real-estate brokers and home owners. With remedial measures to vent radon gas accumulated in basements, homes continue to be built in these hazard lands. But the fact that occupants are exposed to elevated background levels of radiation and uranium sediments in the drinking water from domestic wells has never been seriously examined. Fear of plummeting property values following public hysteria has kept the evidence locked in the Geological Survey's basement archives for the past 28 years.
, the radon gas is directlt related to the rocky underground, so why only Morgan's Grant?
