Patrick O'Donovan (Limerick, Fine Gael) | Oireachtas source

Even it is only water and air, as it is supposed to be, there is no indication as to what happens the geology on the way down. My biggest concern is that vein of territory, starting on the shores of Lough Derg in east Clare up to the border between Cavan and Fermanagh, is very susceptible to high levels of naturally-occurring radon which we can deal with if it is allowed to be emitted naturally. What is the effect when man sticks his oar in and encourages it to be released faster and over a shorter period?