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Re: 700 cancer cases caused by X-rays
As I remember things, there was a Baltimore-Washington Chapter meeting about 2or 3 months after the Watras house was discovered and the area was searched for contaminated houses (Maggie Reilly ran the operation, or at least I remember her as being in charge of the search). The main topic at that meeting was a panel discussion of radon. The thing I most remember about the meeting was a fellow from the EPA stating that 4 pCi/l was not going to be changed no matter what, because the EPA was to afraid of the law suits that might result.
The point I wish to make here was that the 4 pCi/l level had already been set. I ran into Maggie a few years later and one of the things she asked me was if I remembered who had set the level at 4 pCi/l (I had been up there helping with the search).
Tom Mohaupt <tom.mohaupt@WRIGHT.EDU> wrote:
Ruth,
I'm glad you brought up the RAH-RAH Radon article in the last HPS
newsletter, particularly for anyone who has tried to uncover where the
action level of 4 pCi/L came from. If you're interested, you may want to
read "Radon's Deadly Daughters: Science, Environmental Policy, and
Politics of Risk" by M. Edelstein and W. Makofske, (Rowman &
Littlefield, 1998). They present a summary of the development and
evolution of radon policy. I must admit that my interpretation of the
facts they provide differ strongly from the author's interpretations.
Excellent book if you're interested in radon.
Those of you who've read the radon article in the newsletter will recall
that the last section dealt with homeowners paying for testing and
mitigation. This is where the radon policy began. Back in the
mid-1970's, there were two agencies seeking to oversee radon mitigation,
the EPA and the DOE. The radon experience had included one house in PA
(the book gives names & places of this famous incident) having 22 WL
(about 4400 pCi/L) of radon that cost $40,000 to mitigate. The
homeowner's employer covered the cost. Of course other members of the
community wanted their house tested and mitigated. Mitigation costs were
brought down to about $20,000 per house, paid for by the government. The
DOE wanted to set the action level at 20 pCi/L (a small percentage of
houses). The EPA wanted to set the limit at 4 pCi/L (a much, much larger
percentage). Some Congressmen thought that every house in the U.S.
should be at outdoor levels. The question was how, "How does the U.S.
government pay for the program?" Notice that no health effects data for
residential radon were available. All hypotheses were based on mine
data. Funny how some things never change. [Note: The guy whose house had
4400 pCi/L, became a radon mitigator and was apparently still making a
comfortable living at the publication of the above mentioned book.]
{The rest is my conjecture from occurrances as published.}
DOE was not sure of the cost of mitigating houses above 20 pCi/L, but
$20,000 per house seemed reasonable from experience. That's an awfully
steep cost for any homeowner to bear. By making the level 4 pCi/L as the
EPA suggested enough houses would need mitigating to allow radon
businesses to flourish. Hence, a house with 5 pCi/L paying $2000 for
mitigation subsidizes the house with 20 pCi/L by helping to pay for the
business infrastructure. The beauty of the plan is that the homeowner
pays for mitigation, not the governement. All the EPA has to do is drum
up business for the radon companies. Remember the radon ads of the early
1980's - children turning into skeltons, grossly exaggerated lung cancer
threats. Remember the first radon guide that used projected radon lung
cancer risk for smokers to all persons, even never smokers. The impetus
for the program comes during house buying transactions.
My personal opinion is that the EPA was way too bold in their radon
policy. They can't afford for any data to suggest that radon is NOT the
second leading cause of cancer. If there is a threshold for lung cancer
say at 10 or 20 pCi/L, people who've mitigated their houses may file
suit. A scary thought no matter what your point of view is.
My observations:
In epidemiological data, about 60-65% of the lung cancer cases have
radon levels less than 2 pCi/L. About 85% of the cases have radon levels
less than 4 pCi/L. The studies almost always use 4 Ci/L and above for
the uppermost category, so how many (or percentage) lung cancers occur
in persons exposed to 10 pCi/L or 20 pCi/L and above cannot be determined.
In summary (sorry for the long posting)
When the EPA article mentioned homeowners paying for their radon
mitigation, many of you probably didn't realize that the concept had a
long history.
Tom
My observations and thoughts...
RuthWeiner@AOL.COM wrote:
>Absolutely! And the same is true for the lead article in the last Health Physics Newsletter -- Dr. Puskin and EPA's attribution of all those LCFs to radon.
>
>Ruth
>
>
>
--
Thomas Mohaupt, M.S., CHP
Radiation Safety Officer
Wright State University
937-775-2169
tom.mohaupt@wright.edu
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