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RE: Radon-Stirring the Pot



Ruth,

In this regard, I state that while we assume that risk follows a LNT line,

it is not an exact.  I try and explain some of the problems with the

assumptions when I lecture and train individuals:  (1) the LNT is an

extrapolation and we do not know what the response is in the extrapolated,

low dose region; (2) the extrapolated risk is based on high doses; (3) the

exposure was delivered in a short time; (4) worker exposures are protracted;

(5) the statement that 25% of the population will get cancer is an estimate;

etc. We try and focus on meeting regulatory limits and using ALARA practices

as good common sense.  



In estimating risk from radon, it is obviously worse, as the risk estimates

are based epidemiological studies.  And we know accurate they are.



-- John 

John Jacobus, MS

Certified Health Physicist 

3050 Traymore Lane

Bowie, MD  20715-2024



E-mail:  jenday1@email.msn.com (H)      



-----Original Message-----

From: RuthWeiner@AOL.COM [mailto:RuthWeiner@AOL.COM]

Sent: Friday, September 20, 2002 8:51 AM

To: slavak@gj.net; radsafe@list.vanderbilt.edu

Subject: Re: Radon-Stirring the Pot





In a message dated 9/19/2002 3:24:45 PM Mountain Daylight Time,

slavak@gj.net 

writes:



<< Consequently, anyone making statements such as "radon IS the 

second-leading cause of cancer," basing their statement on LNT, is (1) using



LNT in a manner NOT recommended by the radiation protection community, and 

(2) making assertions of fact (when they use the word "is" as I did above) 

without proof or evidence.

  >>

Thank you for ths statement!  now if you could oly get EPA and DOE to use

the 

LNT appropriately...



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