Assertion: radon's level | /r/HasProperty | low
Facets:
value: very
type: DEGREE
value: usually
type: DEGREE
value: in the air
type: LOCATION
value: in most cases
type: TEMPORAL
Source sentences:
text: It is normally found at very low levels in outdoor air and in drinking water from rivers and lakes.
text: Generally speaking, a level below 100 Bq/m³ is considered low risk, and the UK average is far below this at 20 Bq/m³.
text: In most cases these levels are very low, but in a few instances these materials may contribute significantly to radon exposure.
text: Because radon can be found outdoors in low levels, everyone is exposed to it at some point.
text: It will normally be found at low levels in outdoor air and in the water from rivers and lakes.
text: Outside air always has some radon in it, but the level is usually low enough that it doesn't cause trouble.
text: Small amounts of it can also come from building materials, like concrete, brick, and granite, but experts say that the levels are usually low enough they don't cause problems on their own.
text: Radon is normally found at very low levels in outdoor air.
text: Every building contains radon but the levels are usually low.
text: These levels are so low that they are not harmful to human health.
text: It is normally found at very low levels in outdoor air and in drinking water from rivers and lakes.
text: In the outdoors, radon is diluted to low levels.
text: In outside air the levels of radon are low but it collects in enclosed places, such as houses, workplaces and other buildings.
text: The levels are very low in the air outside but can be higher inside buildings.
text: If people have concerns about radon, the university health office will come out and do testing of that building or that dorm to make sure that levels are low.