NEHA Housing and Built Environment

Question 1

Under the HUD Lead Safe Housing Rule, at what age is a dwelling considered 'target housing' requiring lead hazard evaluation before federally assisted renovation?

Accepted Answer

Built before 1978

Answer

The HUD Lead Safe Housing Rule defines target housing as residential dwellings built before 1978, when lead-based paint was banned for residential use.

Question 2

What is the EPA's action level for lead in drinking water that triggers public water systems to take corrective action?

Accepted Answer

15 µg/L

Answer

The EPA action level for lead in drinking water is 15 micrograms per liter (µg/L or ppb); systems exceeding this must take corrective action.

Question 3

Which federal program requires landlords and sellers to disclose known lead-based paint hazards in pre-1978 housing before sale or lease?

Accepted Answer

Residential Lead-Based Paint Hazard Reduction Act (Title X)

Answer

Title X of the Residential Lead-Based Paint Hazard Reduction Act mandates disclosure of known lead-based paint and hazards in pre-1978 housing transactions.

Question 4

Radon gas in homes is primarily a byproduct of which naturally occurring radioactive decay chain?

Accepted Answer

Uranium-238 decay to radium-226 to radon-222

Answer

Radon-222 is produced from the radioactive decay of radium-226, which itself comes from the uranium-238 decay chain naturally present in soil and rock.

Question 5

The EPA recommends mitigation when indoor radon levels reach or exceed which concentration?

Accepted Answer

4 pCi/L

Answer

The EPA recommends taking action to reduce radon when levels reach 4 picocuries per liter (pCi/L) or higher in a home.

NEHA - National Environmental Health Association Practice Test

NEHA - National Environmental Health Association Practice Test

NEHA Housing and Built Environment