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Radon is a
Cancer causing radioactive gas that is produced by the breakdown of
uranium in soil, rock, and water. It is found all over the world
including New England.
Radon can be found in any home whether it is new, old, slab,
crawlspace, or basement. Radon is odorless and colorless. It typically
rises up through the ground and into your home through holes in the
foundation, where the concentration can build up. Air pressure in a
structure is usually lower than pressure in the soil under and around
a structures foundation. Because of this difference in pressure a
structure may act like a vacuum drawing radon in through small
openings in the foundation. Radon is a radioactive element.
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This means
that radon is unstable and will decay into other elements over time.
These elements are called decay products. When a radioactive element
decays, it emits radiation. It is the radiation given off by radon and
its decay products that is the health risk
concern. The decay products of radon are alpha, beta, and gamma. These
decay products are not gases but are solids that form in the air
whenever radon is present. These solids have an electric charge.
Because of this charge, the decay product can become attracted to
almost any object, including particles in the air such as dust. As you
breathe it, it may become trapped in your lungs. Alpha particles are
of the most concern. When lodged in the mucus membrane lining that
coats the lung, this means that a radioactive material is directly on
your lung tissue. The living cells of the lung now can be exposed
directly to the radiation from the decay product.
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EPA Recommendations:
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Test your home for radon --
it's easy and inexpensive.
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Fix your home if your radon
level is 4 picoCuries per liter (pCi/L) or higher.
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Radon levels less than 4 pCi/L
still pose a risk, and in many cases may be reduced.
Radon is
estimated to cause about 14,000 deaths per year. However, this number
could range from 7,000 to 30,000 deaths per year The numbers of deaths
from other causes are taken from 1990 National Safety Council reports.
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