Search
  • cobylamarche

SOME OBSERVATIONS ON SOIL TYPES

It is important to remember that this discussion does not replace a radon test. Predicting radon issues based on the prevalent soil type in the area is far from an exact science (in fact it's an impossible science); however, we have identified a couple of trends that might provide an indication of radon-potential.


Some of the highest indoor levels of radon we have seen are in areas with gravel extraction activities, and some of the lowest in areas comprising silty clay soils. This is probably due, in part, to the relatively high permeability of gravel-type soils. Soil gas (including radon) will move more easily through sand and gravel than silts or clay. This is not to say that a gravel pit in your area guarantees a radon issue, or that clay means there won’t be an issue. There are many other factors at play including the radon levels in the soil, the construction of the building, and how the building is operated.

17 views0 comments

Recent Posts

See All

Is Sealing the Sump Enough?

In many circumstances, radon mitigation of a residential property has two main components: 1) sub-slab depressurization 2) the installation of a sealed cover on the groundwater sump. We are often aske

BROWNFIELD REDEVELOPMENT

We recently provided soil vapour mitigation design support to the redevelopment of a brownfield site contaminated with chlorinated solvents. You may have heard of trichloroethylene or tetrachloroethyl