Intent 1:
To limit the probability that:
- components of a future system for the remediation of
high indoor radon concentration will be located inappropriately or
be inaccessible for the future installation of exhaust equipment,
which could lead to a very difficult and costly installation of connections
to the gas-permeable layer,
- the layer beneath the air barrier cannot be depressurized,
or
- the connections to a future system for the remediation
of high indoor radon concentration:
- will be used for purposes other than radon extraction,
- will not be installed, which could lead to the installation
of connections in the future being very difficult or costly, and
- will not be adequately labelled, which could lead to
the connections accidentally being opened or used for other purposes.
This is to limit the probability that radon cannot be extracted
from all spaces between the air barrier and the ground, which could
lead to high concentrations of radon inside buildings, which could
lead to negative effects on the air quality of indoor spaces, which
could lead to harm to persons.
Intent 2:
[Subclause (c)(ii)] To
limit the probability that components of a future system for the remediation
of high indoor radon concentration can bypass the air barrier system
or that airtight seals will be removed, which could lead to the infiltration
of soil gas, which could lead to negative effects on the air quality
of indoor spaces, which could lead to harm to persons.