Radon Mitigation in Eagan, MN

A 1970s-to-90s City

Eagan built out mostly in the 1970s, 80s and 90s, and its housing reflects those decades: split-entries and split-levels in the older neighborhoods, two-storeys later, and townhome developments throughout. Almost none of it was built with a passive radon pipe, since that requirement only arrived in 2009. The north side runs along the Minnesota River bluffs; the south is rolling glacial ground around Lebanon Hills.

Split-Levels and the Placement Question

A split-level has two plausible lowest levels — a lower family room and, below or beside it, a basement or crawl. They usually read differently, and the difference can decide whether a house is above or below the 4.0 action level. The protocol points at the lowest level that is lived in or could be. In most Eagan split-levels that is the lower family room, but not always, and we ask how the house is used before placing anything.

Two Slabs, One Fan

When a split-level reads high, the next question is whether its two slabs share fill underneath or are separated by a footing. If they share, one suction point may reach both. If they are separated, each needs its own suction point, but they can usually join one riser and one fan. Suction testing across both slabs settles it.

Townhomes and Shared Slabs

Eagan has a large stock of townhomes. Attached units can share a slab or connect through the fill under a party wall, so soil gas — and suction — can cross between them. Mitigating one unit is usually possible, but sometimes the neighbour has to be part of the plan, and most associations have rules about pipes on the exterior. Check with the HOA early.

Working in Eagan

We cover the whole city. Start with a 48-hour test on the right level. If it is high, a sub-slab system designed around both slabs, and a retest to confirm.

Eagan Radon FAQs