Environmental
Maine's radon mitigation typically involves installation of:
ASpecial paint on basement walls
BA sub-slab depressurization system that vents radon gas to the exterior✓ Correct
CRadon-absorbing filters in the HVAC system
DWaterproofing of the foundation only
Explanation
Sub-slab depressurization (SSD) is the most effective and common radon mitigation system in Maine, creating negative pressure beneath the foundation slab to draw radon gas away before it enters the home and vent it safely to the outside.
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