Reply to Dangerous levels of Radon found in 28 MCPS schools.

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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]

The risk at 4.0 from a classroom is pretty much zero.  Look at the actual statistics and how long they presuppose one is exposed to the room.[/quote]

The risk at 4.0 is certainly not zero.  The risk at 2.0 is not even zero.  You're being ridiculous.  [/quote]

Pretty much zero, not actually zero. There is no such thing as actually-zero risk. (I'm not the PP you're responding to.)

If 1,000 people who never smoked were exposed to 4 pCi/L over a lifetime, about 7 people could develop lung cancer. (The EPA says that this risk of getting lung cancer compares to the risk of dying in a car crash.)

If 1,000 people who never smoked were exposed to 2 pCi/L over a lifetime, about 4 people could develp lung cancer. (The EPA says that reducing radon levels below 2 pCi/L is difficult.)

If 1,000 people who never smoked were exposed to 1.3 pCi/L (the average indoor radon level) over a lifetime, about 2 people could develop cancer.

http://www2.epa.gov/radon/health-risk-radon

(I do not work for MCPS. I have never worked for MCPS. I have never worked in education at all.)[/quote]
Why are you arguing about appropriate risk levels when they've already been set by EPA and are being exceeded in these schools?  [/quote]

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