DON'T IGNORE IT! Radon is a Serious Health Issue.
Radon is a radioactive gas that you cannot see, smell or taste and can
get into your home undetected. It is the second leading cause of LUNG CANCER after smoking and the leading cause of LUNG CANCER for non-smokers.
When radon escapes from the ground into the outdoor air, it
is diluted to low concentrations and is no cause for concern. However,
when radon enters an enclosed space, like a home, it can accumulate
to HIGH LEVELS and become a health hazard. If the radon level in your home
is high it should be mitigated by a CNRPP CERTIFIED CONTRACTOR .

The current Government of Canada guideline for exposure to radon in indoor air is:

• Remedial measures should be undertaken in a dwelling whenever the average annual radon concentration exceeds 200 Bq/m³ in the lowest normal occupancy area.

• The higher the radon concentration, the sooner remedial measures should be undertaken.

• When remedial action is taken, the radon level should be reduced to a level or concentrationas low as practicable.

• The construction of new dwellings should employ techniques that will minimize radon entry and facilitate post-construction radon removal should this subsequently prove necessary.