I'm aware the EPA levels are 4.0 pCi/l are considered safe.

Multiple tests of my basement has a Radon Levels averaging between 6.2 and
6.8 in 2 different seasons. I have a typical colonial house with a poured
cement basement.

My main living area has been tested multiple times also, and averages 3.0 to
3.5 at it's worst. So I am well below EPA levels here.

So should I invest $800 in a Radon Elimination system to bring the basement
to normal levels if I only spend minimal time down there? It's mainly
storage and my work bench area.

Advice welcome