RMS RMS Industry Standards 3 — Questions and Answers
Question 1: The ANSI/AARST standard for mitigation in multifamily housing is designated as:
- ANSI/AARST MAMF (Correct answer)
- ANSI/AARST MAH
- ANSI/AARST SGM-SF
- ANSI/AARST CC-1000
Correct answer: ANSI/AARST MAMF
ANSI/AARST MAMF specifically addresses radon mitigation practices for multifamily buildings.
Question 2: Under ANSI/AARST mitigation standards, which of the following is explicitly prohibited as a sole mitigation method in a home with a basement?
- Sub-slab depressurization
- Block wall depressurization
- Sealing alone without active ventilation (Correct answer)
- Drain-tile depressurization
Correct answer: Sealing alone without active ventilation
Sealing cracks and openings alone, without an active system, is not accepted as a standalone long-term mitigation method.
Question 3: Which AARST standard defines quality and qualifications for radon measurement professionals, used to benchmark RMS knowledge?
- ANSI/AARST MALB
- ANSI/AARST R-MMP (Correct answer)
- ANSI/AARST SGM-SF
- ANSI/AARST MAMF
Correct answer: ANSI/AARST R-MMP
ANSI/AARST R-MMP (Radon Measurement and Mitigation Professional) sets qualification standards for the field.
Question 4: According to EPA guidance and AARST standards, where should radon mitigation system exhaust pipes discharge?
- Into the crawlspace
- At least 12 inches above the roofline and away from windows (Correct answer)
- Into the attic for dilution
- Into the garage
Correct answer: At least 12 inches above the roofline and away from windows
Exhaust must discharge above the roofline and away from windows, doors, and openings to prevent re-entry.
Question 5: An RMS contractor discovers the post-mitigation test result is 3.2 pCi/L. Per AARST performance standards, the appropriate next step is to:
- Declare success and close the job
- Recommend additional mitigation measures to reach below 2 pCi/L (Correct answer)
- Wait 1 year and retest
- Install a second fan immediately without retesting
Correct answer: Recommend additional mitigation measures to reach below 2 pCi/L
A result of 3.2 pCi/L is above the 2 pCi/L performance goal, so additional measures should be discussed with the client.
Question 6: AARST standards require that mitigation system labels include which of the following?
- The contractor's home address
- Installation date, contractor name, and contact information (Correct answer)
- The homeowner's name
- The radon test device serial number
Correct answer: Installation date, contractor name, and contact information
Labels must display installation date and contractor identification so future inspectors and owners can trace the installation.
Question 7: Which federal agency provides the primary regulatory framework and guidance documents that AARST standards are designed to complement?
- OSHA
- CDC
- EPA (Correct answer)
- FEMA
Correct answer: EPA
The U.S. Environmental Protection Agency (EPA) sets radon action levels and guidance that AARST standards are aligned with.
RMS RMS Industry Standards 3
The ANSI/AARST standard for mitigation in multifamily housing is designated as: