Chapter 2 - Radon Exam (Qs &As)
A significant difference between one room and the next in a building with a
large central air handling system is often caused by: Correct Answer-An
unbalanced air distribution system
A correct statement regarding radon testing in Zone 3 areas of the EPA Radon
...
Chapter 2 - Radon Exam (Qs &As)
A significant difference between one room and the next in a building with a
large central air handling system is often caused by: Correct Answer-An
unbalanced air distribution system
A correct statement regarding radon testing in Zone 3 areas of the EPA Radon
Potential Map is that such testing: Correct Answer-a. is recommended.
(correct)
b. is not recommended.
c. will invariably reveal radon levels below 4 pCi/L.
d. will reveal radon levels below 2 pCi/L
After 25 years of updates by testers and state agencies, the US EPA Map of
Radon Zones is a good predictor of where indoor radon levels will not be
elevated. Correct Answer-False
How can you tell if a house contains elevated levels of radon? Correct
Answer-Test for radon.
If a short-term, closed building radon test is conducted in the basement of a
home with a result of 10 pCi/L, what can be said about the radon levels on the
, Chapter 2 - Radon Exam (Qs &As)
first floor above the basement? Correct Answer-The first floor radon level is
likely to be equal to or less than the basement measurement of 10
If the water for a home comes from an underground well that has 60,000 pCi/L
in the water, how much radon will be added to the air of the home due to
normal usage of water? Correct Answer-6 to 10 pCi/L
In a cold climate, stack effect is typically higher during the: Correct Answer-
Winter
In a house with a forced air heating and cooling system, which of the following
conditions would most likely increase short-term indoor radon concentrations
the most? Correct Answer-Return ducts are on the suction side of a furnace
blower. Hence, there is a high vacuum inside the return ducts. If the return duct
is buried in radon producing soil and it has leaks in it, when the furnace fan
operates it will draw radon out of the soil and dump it into the living space.
The correct answer is: Return ducts under the slab with the air blower on.
In most homes the main source of elevated radon levels is: Correct Answer-
the soil
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