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Radon Exam Questions with Correct Answers.
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Radon Exam Questions with Correct Answers.
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Radon Exam Questions with Correct AnswersAccording to the US EPA Citizens Guide to Radon, radon levels in most
homes, can be reduced to: Correct Answer-2 pCi/L or less
Homeowners should be advised to have their mitigation contractors
stipulate that they will follow: Correct Answer-Radon Mitigation
Standards such as the US EPA, AARST, ASTM, or as recognized by
their state radon office
Prolonged exposure to radon is considered dangerous because radon can
cause: Correct Answer-lung cancer
The most common radon mitigation technique at this time is: Correct
Answer-Active soil depressurization
The Radon Action Level in the United States is: Correct Answer-4.0
pico Curies per liter of air
The submembrane mitigation strategy is applicable to which of the
following foundation types? Correct Answer-Crawl space houses
What is radon? Correct Answer-An invisible, odorless, tasteless,
naturally occurring, radioactive gas.
What is the minimum deployment/sampling period for a short-term test?
Correct Answer-Two days
,What is the purpose of the US EPA Map of Radon Zones? Correct
Answer-To suggest where radon resistant new construction techniques
would be the most cost-effectively employed.
Which of the following best represents the recommendation of the U.S.
EPA for citizen exposure to radon? Correct Answer-Long-term exposure
to elevated radon can increase the potential for lung cancer
Which of the following is an acceptable location for the discharge of an
active soil depressurization system? Correct Answer-Above the eave of
the roof.
Which of the following locations is appropriate for the fan of an active
soil depressurization system? Correct Answer-Attic
Which of the following Radon measurement approaches best estimates
occupant exposure? Correct Answer-A yearlong test with an alpha track
detector in the lowest occupied level of the home with no special
precautions for closed building conditions.
A correct statement regarding radon testing in Zone 3 areas of the EPA
Radon Potential Map is that such testing: Correct Answer-is
recommended.
,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
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 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 under the slab
with the air blower on.
In most homes the main source of elevated radon levels is: Correct
Answer-the soil.
Indoor Radon levels are always higher during the winter months
(November through March) than any other time of year. Correct
Answer-False
On a nationwide basis, which of the following radon entry mechanisms
account for the greatest amount of radon entry? Correct Answer-
Convective movement of soil gas into the building.
On an overall basis for similarly constructed homes in the same climatic
area, under which of the following conditions might one expect the
highest radon entry into a home? Correct Answer-Highly permeable soil
with high radium content beneath the house which is entirely built over a
crawl space.
Pipe chases up through interiors of apartment buildings can provide
radon pathways to upper level units. Correct Answer-True
Temperature induced stack effect is greatest when: Correct Answer-The
outdoor temperatures are very low relative to interior temperatures
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