Missouri Environmental
Practice Questions & Answers (2026)
Environmental questions on the Missouri exam cover both federal environmental laws and Missouri-specific disclosure requirements. Federal topics include lead-based paint (pre-1978 housing), asbestos, radon, underground storage tanks, and CERCLA liability. Missouri has additional state-level environmental disclosure requirements enforced by the Missouri Real Estate Commission — including Missouri-specific environmental conditions that affect property use and disclosure. Environmental questions trip up candidates who studied only federal law without reviewing the MO-specific overlay.
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Missouri Environmental — Practice Questions & Answers
123 questions on Environmental from the Missouri real estate question bank. First 10 are free — sign up to unlock all 123.
Q1. Which Missouri state agency oversees environmental regulation of real property, including hazardous waste sites?
Explanation
The Missouri Department of Natural Resources (DNR) is the primary state agency responsible for environmental regulation, including hazardous waste cleanup, water quality, and air quality.
Q2. Under the Missouri Clean Water Law, it is illegal to:
Explanation
The Missouri Clean Water Law (Ch. 644 RSMo) prohibits discharging pollutants into state waters without a permit from the Missouri DNR, consistent with the federal Clean Water Act.
Q3. A federal law requiring disclosure of lead-based paint hazards in homes built before 1978 is:
Explanation
Title X (the Residential Lead-Based Paint Hazard Reduction Act) requires sellers and landlords to disclose known lead-based paint hazards in pre-1978 housing and provide buyers with 10 days to conduct inspections.
Q4. Radon gas is a concern in Missouri real estate because:
Explanation
Radon is a naturally occurring radioactive gas that seeps up from the soil and can accumulate in basements and lower levels of buildings. Missouri has areas with elevated radon levels, making testing important.
Q5. CERCLA (Superfund) in Missouri creates liability for cleanup costs. Who can be held liable under CERCLA?
Explanation
CERCLA imposes joint and several liability on PRPs (potentially responsible parties), including current owners, past owners who owned during contamination, generators, and transporters of hazardous substances.
Q6. Asbestos is most hazardous to building occupants when it is in what condition?
Explanation
Friable asbestos can release fibers into the air where they are inhaled and can cause mesothelioma, lung cancer, and asbestosis. Encapsulated asbestos in good condition is generally left in place.
Q7. Underground storage tanks (USTs) in Missouri are regulated primarily because they can:
Explanation
Leaking USTs are a major source of soil and groundwater contamination. The Missouri DNR regulates USTs under state and federal programs to prevent and remediate leaks.
Q8. A Missouri seller's disclosure statement must disclose which of the following environmental issues if known?
Explanation
The Missouri Seller's Disclosure Statement requires sellers to disclose known material defects including environmental hazards such as hazardous substances, USTs, or contamination affecting the property.
Q9. Mold in a Missouri property is primarily a concern because:
Explanation
Mold can cause significant health issues (respiratory problems, allergies) and is considered a material defect that must be disclosed on the Missouri Seller's Disclosure Statement.
Q10. Which federal law governs the cleanup of contaminated sites using a 'Superfund' trust?
Explanation
CERCLA, commonly known as Superfund, established a trust fund for cleanup of contaminated sites and created liability for parties responsible for hazardous substance releases.
Q11. A Missouri property owner near the Meramec River has wetlands on their land. Development of these wetlands may require a permit from:
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