HOW RADON ENTERS A
Radon is a naturally occurring gas produced
by the breakdown of uranium bearing soil, rock and water. Air
pressure inside a building is usually lower than pressure in the soil
around a building foundation. Because of the differences in pressure, a
building can act like a vacuum, drawing radon in through foundation
cracks and other openings. Radon may also be present in water and and be
released into the air of the building when water is used. In most cases,
radon entering the building through water is a small risk compared to
radon entering the facility from the soil.
RADON IS A CANCER-CAUSING RADIOACTIVE GAS
Radon is estimated to cause many thousands
of cancer deaths each year. In fact, the Surgeon General has warned that
radon is the second leading cause of lung cancer in the U.S.
Any radon exposure has some risk of causing
lung cancer. The lower the radon level in a building, the lower the
occupants risk of lung cancer. The U.S. Congress has set a long term
goal that indoor radon levels be no more than outdoor levels, about 0.4
pCi/L of radon is normally found in the outside air. EPA recommends
fixing a building if the results of one long term tests taken in the
lowest occupied level of the building show radon levels of 4 pCi/L (or
0.02 WL) or higher. A short term test remains in the building for two
days to 90 days, whereas a long-term test remains for more than 90 days.
With existing technology, radon levels in most buildings can be reduced
to 2pCi/L or below.
Instrumentation and Trained Personnel
Environmental Consulting &
Testing, LLC (ECT) radon testing/inspection procedures use the most
reliable testing devices from charcoal canisters and an airborne
radiation detection instrument (Femto-TECH RS410F).
The femto-TECH RS410F is a
precision airborne alpha radiation detection instrument based on pulsed
ion chamber technology. Utilizing electrometers and open grid probe
design, the RS410F is suited for a wide range of radon measurement
applications. With its on-board computer, the RS410F is a portable
self-contained continuous radon monitor capable of reading and storing
test data for over 500 hours of stand-alone operation. In this mode of
operation the RS410F is suited for screening and follow-up type testing.
Additionally, with a built in diaphragm pump it is capable of fast
response active radon monitor for grab sampling, soil analysis, and
other diagnostic applications.
ECT radon consulting capabilities
includes testing and mitigation design services. Our presence locally
and regionally allows us to provide individual and multi facility
project services across the southeast.