Radon

Question 1

Radon control measures:

Gas permeable layer of X

Answer 1

4” depth gravel beneath floor slabs

Question 2

Radon control measures:

Soil gas retarder made of X

Answer 2

6 mil Visquene placed above gas permeable layer

Question 3

Radon control measures:

The use of X to reduce entry

Answer 3

Use of Caulk to reduce entry through cracks

Question 4

Radon control measures:

Venting of concealed spaces with X

Answer 4

3” to 4” PVCC pipe which may include power venting.

Question 5

Radon control measures:

Doing what to masonry blocks

Answer 5

Capping off masonry block walls with solid materials.

Question 6

Radon control measures:

Solid covers over X

Answer 6

Sump and well pits.

Question 7

What is the safe and acceptable standard for radon?

Answer 7

None

Question 8

Radon is the X leading cause of lung cancer

Answer 8

second

Question 9

Natural outdoor radon gas level

Answer 9

0.4 PCI/L

Question 10

Target level for indoor radon levels?

Answer 10

0.4 PCI/L same as outdoor

Question 11

How many homes exceed target radon levels?

Answer 11

2/3

Question 12

Average level in U.S home of radon?

Answer 12

1.25 PCI/L

Question 13

What does PCI/L stand for?

Answer 13

Pico Curies per Liter

Question 14

EPA take action level of radon

Answer 14

4 PCI/L