Environmental
A Minnesota homeowner's basement tests positive for radon at 6 pCi/L. The EPA action level is 4 pCi/L. What is the recommended response?
ANo action needed since radon is naturally occurring
BOpen windows for ventilation and retest in 6 months
CInstall a radon mitigation system (sub-slab depressurization)✓ Correct
DAbandon the basement for habitable use
Explanation
When radon exceeds 4 pCi/L (the EPA action level), mitigation is recommended. The most effective method is sub-slab depressurization, where a pipe and fan system draws radon from under the slab and vents it outside. Minnesota has elevated radon levels due to its granite geology, and radon mitigation is commonly needed. Mitigation systems typically cost $800-$2,500.
Related Minnesota Environmental Questions
- Under Minnesota's disclosure laws, a seller must disclose their knowledge of which environmental condition?
- Minnesota's Well Disclosure Certificate is required when a property is sold. Which wells must be disclosed on this certificate?
- Under Minnesota's Disclosure of Hazardous Substances Act, which substance disclosure is specifically required when selling residential property?
- A Minnesota property owner near Lake Superior notices their shoreline is eroding due to wave action and storms. The most appropriate remedy is:
- PCBs (polychlorinated biphenyls) found in older transformers or building materials in Minnesota are regulated under:
- Minnesota property owners near the Twin Cities with private wells that have been contaminated by industrial PFAS may be eligible for:
- A Minnesota horse farm is being sold. The property has had horses for 50 years. What environmental concern is most relevant for this type of agricultural operation?
- A Minnesota property has an active private water well. The Minnesota Department of Health recommends testing private wells for which contaminants at minimum?
Practice More Minnesota Real Estate Questions
1,500+ questions covering all exam topics. Start free — no signup required.
Take the Free Minnesota Quiz →