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A convective current powered by Temperature Driven Airflow, which is similar to the draft on a chimney is also known as:
A home had a known radon concentration of 8000 pCi/L in the well water supply. Subsequent radon testing in the finished basement by the homeowner revealed levels of 10 pCi/L. Your recommendation to the homeowner would be:
Why is 50% equilibrium ratio is assumed when converting from working level measurements to radon concentrations?
Simultaneous radon and RDP measurements were made during closed building conditions were maintained for 12 hours. The ER was determined to be only 25%. Which was most likely to cause the ER to be less than the average 50%?
If a homes underground water supply contains a radon concentration of 80,000 pCi/L, what is the estimated contribution to indoor air during normal water usage?
In colder climates, stack effect is typically higher during which season?
Mechanical appliances that affect radon entry include all except:
Plumbing stacks, electrical chases, and floor drains are just a few of the thermal bypasses and considered to have what affect on the home?
Which is least likely to be a main source of radon for a home?
Which is true about a neutral pressure plane?
Which of the following can cause a spike in radon levels?
Which of the following is not required for radon entry?
Which of the following transport mechanisms cause the greatest amount of radon entry?
Which of the following variables is mostly likely to determine elevated radon levels in a home?
EPA guidelines suggest that it takes approximately 10,000 pCi/L of radon in water to give an airborne concentration of 1 pCi/L.
Manufactured or mobile homes are not likely to have high radon concentrations and are exempt from testing.
Radon levels vary constantly, daily and seasonally.
Radon moves through cracks and fissures in rock and through air spaces in the soil beneath the home.
Soil composed predominantly of clay is the primary source of radon via pressure driven transport.
Testing for radon from granite countertops is an adequate method for determining radon levels in a home.
The primary source of radon in water is public water supply.